Background technology
In rainfall, because the randomness of rainfall and the uncertainty of face of land pollutant accumulation, rainfall runoff washes away the pollutant levels change list that face of land pollutant causes and reveals tangible random fluctuation feature, therefore, when collecting rainwater, need the pollutant levels of rainwater be detected, make the bigger rainwater of pollutant levels get rid of and only collection cleaning rainwater.
Existing can the detection to rainfall runoff, the equipment of collecting the cleaning rainwater selectively includes an early-stage rainwater drain, a valve is set on drain, a SS concentration detector (being the instrument of detection of contamination concentration) is set at the valve place, and the SS concentration detector all links to each other with control module with valve.When the SS concentration detector detects pollutant levels above after the index, control module makes valve opening, and the rainwater that pollutant levels exceed standard is got rid of from valve, and when the SS concentration detector detect pollutant levels up to standard after, control module makes valve closes, collects this cleaning rainwater.
The cleaning rainwater that existing equipment is collected is analyzed, discovery still has the higher rainwater of pollutant levels to enter the rainwater collecting pit, that is to say, still have the higher rainwater of pollutant levels not up to standard in the cleaning rainwater of collection, cause to reach rainwater and collect purpose.And its reason mainly contains following two:
1, valve is finished opening-closing process needs the regular hour, in the existing rainwater collection technique, the valve of rainwater of decontaminating all is to detect from the SS concentration detector to begin to open after pollutant levels surpass index, in the valve opening process, current flow in continuation, after having caused valve opening, the higher rainwater of part pollutant levels may flow through valve.
2, measured data shows that pollutant levels are that random fluctuation changes in the rainfall runoff.What be arranged in the prior art that the SS concentration detector at valve place detects is the concentration value of a point of valve downstream, does not coordinate the function of the random fluctuation process of the opening-closing process of valve and pollutant levels.When practical operation, switching valve may be that random fluctuation changes and frequent execution switching motion and can not closing fully or Open valve because of pollutant levels, directly cause the pollutant leakage in the early-stage rainwater to enter in the rainwater collecting pit, cause the cleaning rainwater pollution of collection, or miss collection the cleaning rainfall runoff.
Summary of the invention:
Technical problem to be solved by this invention provides a kind of rainwater that can effectively pollutant levels be exceeded standard to be got rid of, and directly collects the rain collector of cleaning rainwater.
The technical solution adopted for the present invention to solve the technical problems is: rain collector, comprise the rectangle guiding gutter and be arranged on the rain water drainage mechanism for opening/closing that exceeds standard on the rectangle guiding gutter housing, in the rectangle guiding gutter, be provided with the pollutant levels checkout equipment, exceed standard rain water drainage mechanism for opening/closing and pollutant levels checkout equipment is connected with control module, in the rectangle guiding gutter, be provided with the flow monitor and the depth of water checkout gear that are connected with control module, flow monitor, depth of water checkout gear and pollutant levels checkout equipment are arranged on the place ahead of the rain water drainage mechanism for opening/closing that exceeds standard, and the pollutant levels checkout equipment is to minimum time of flow of the rain water drainage mechanism for opening/closing that exceeds standard maximum opening time more than or equal to the rain water drainage mechanism for opening/closing that exceeds standard, the maximum close time of rain water drainage mechanism for opening/closing and the reaction time sum of control module exceed standard.
Further be that the described rain water drainage mechanism for opening/closing that exceeds standard is arranged on the housing bottom of rectangle guiding gutter.
Further be, the rain water drainage mechanism for opening/closing that exceeds standard comprises the draining valve plate that is arranged on rectangle guiding gutter housing bottom, and rectangle guiding gutter housing bottom has the current through hole suitable with the draining valve plate, is connected with the keying power set on the draining valve plate.
Further be, described keying power set comprise the support that is supported on draining valve plate bottom and are arranged on air bag on the support, and air bag is connected with air pressure tank, and air pressure tank is connected with air pump, is provided with tank below the draining valve plate, and air bag is positioned at tank; Tube wall place at air bag and air pressure tank is provided with drain tap, is provided with charging valve in the pipeline of drain tap and air pressure tank, and described air pump, air pressure tank, drain tap are electrically connected control module with charging valve.
Further be, bottom of gullet is set with pedestal, and pedestal is provided with slipping column, is set with sleeve in draining valve plate bottom, and sleeve is slidingly fitted on the slipping column.
Further be, be provided with corrosion resistant plate at draining valve plate two ends, be provided with the magnetic seal plate corresponding with corrosion resistant plate at rectangle guiding gutter housing bottom, the magnetic seal plate is to the magnetic attraction of the corrosion resistant plate gravity sum less than draining valve plate, corrosion resistant plate, support and sleeve.
Further be, be provided with screen pack at the upper body inwall of tank, the top of screen pack extends to the corrosion resistant plate below.
Further be, be provided with sand discharging pump, be connected with on the sand discharging pump and extend to the outer row's sand tube of tank at bottom of gullet.
Further be that described flow monitor and depth of water checkout gear adopt supersonic Doppler flow rate detection system.
The invention has the beneficial effects as follows: because the pollutant levels checkout equipment is set to maximum opening time more than or equal to the rain water drainage mechanism for opening/closing that exceeds standard to minimum time of flow of the rain water drainage mechanism for opening/closing that exceeds standard in the rectangle guiding gutter, the maximum close time of rain water drainage mechanism for opening/closing and the reaction time sum of control module exceed standard, and pass through flow monitor, the setting of depth of water checkout gear, can make the diffusion mobility process of non-constant water flow process in the control module analog computation rectangle guiding gutter and pollutant levels and control reasonable opening time of the rain water drainage mechanism for opening/closing that exceeds standard, guarantee in time from rainfall runoff, to get rid of the contaminated rain water and the selective collection cleaning rainwater of high concentration, thereby improve collecting effect, be adapted at applying in the rain collector the cleaning rainwater.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
As Fig. 1 and shown in Figure 2, rain collector of the present invention, comprise rectangle guiding gutter 1 and be arranged on the rain water drainage mechanism for opening/closing that exceeds standard on rectangle guiding gutter 1 housing, in rectangle guiding gutter 1, be provided with pollutant levels checkout equipment 3, exceed standard rain water drainage mechanism for opening/closing and pollutant levels checkout equipment 3 is connected with control module 9, in rectangle guiding gutter 1, be provided with the flow monitor 2 and depth of water checkout gear 22 that are connected with control module 9, flow monitor 2, depth of water checkout gear 22 and pollutant levels checkout equipment 3 are arranged on the place ahead of the rain water drainage mechanism for opening/closing that exceeds standard, and pollutant levels checkout equipment 3 is to minimum time of flow of the rain water drainage mechanism for opening/closing that exceeds standard maximum opening time more than or equal to the rain water drainage mechanism for opening/closing that exceeds standard, the maximum close time of rain water drainage mechanism for opening/closing and the reaction time sum of control module 9 exceed standard.
The become a mandarin pollutant levels of rainfall runoff of pollutant levels checkout equipment 3 continuous detecting, and flow monitor 2 detects water velocity, the depth of water that depth of water checkout gear 22 detects in the rectangle guiding gutter 1, with the transfer of data that detects to control module 9, according to the data that detect the non-constant rectangle open-channel flow in the rectangle guiding gutter 1 and the diffusion transport process of pollutant are carried out analog computation by the control software in the control module 9, prediction pollutant levels checkout equipment 3 to the rectangle guiding gutter between the rain water drainage mechanism for opening/closing of exceeding standard along each concentration distribution of pollutants constantly of journey, control software is according to the rectangle guiding gutter internal contamination substrate concentration spatial and temporal distributions value of prediction, the rain water drainage mechanism for opening/closing entrance pollutant levels of determining to exceed standard change, concentration index according to the collection of cleaning rainwater, pre-establish the rain water drainage mechanism for opening/closing that exceeds standard and discharge the keying operation formula that exceeds standard rainwater and collect the cleaning rainwater, immediately send operational order, finish and from rainfall runoff, collect cleaning rainwater and the rainwater process that decontaminates (for getting rid of the rainwater that exceeds standard, cleaning rainwater for collecting when closing during the rain water drainage mechanism for opening/closing that exceeds standard unlatching).In this process, must guarantee that contaminated rain water can all discharge, and the rainwater of collecting all is pollutant levels cleaning rainwater up to standard.
Embodiment by Fig. 3 describes to above-mentioned embodiment.Rainfall runoff concentration curve as shown in Figure 3 (ordinate is pollutant levels in the current, and abscissa is the time), cleaning rainwater collection process need be discharged the rainwater of AB, CD time period concentration over-standard, collects BC, DE time period concentration cleaning rainwater up to standard.If checkout equipment 3 is T second to the pollutant minimum transition time of the rain water drainage mechanism for opening/closing inlet that exceeds standard, the maximum opening time of the rain water drainage mechanism for opening/closing that exceeds standard is T
1Second, the maximum shut-in time is T
2Second, the reaction time of control module 9 is 2 seconds.
In the rectangle guiding gutter 1 pollutant levels checkout equipment 3 to the flow process length of the rain water drainage mechanism for opening/closing inlet of exceeding standard by can guarantee that the minimum time T that pollutant moves determines data processing time sum greater than complete opening, closure, the control module of the rain water drainage mechanism for opening/closing that exceeds standard in the rectangle guiding gutter, that is: T>T
1+ T
2+ 2.The cleaning rainwater that periodic process collects of opening and closing each time with the rain water drainage mechanism for opening/closing that guarantees to exceed standard all is that the continuous process time span opens and closes the cleaning rainwater of length cycle time greater than the minimum of the rain water drainage mechanism for opening/closing that exceeds standard in the rectangle guiding gutter, to guarantee to get rid of fully the rainwater that exceeds standard in the rectangle guiding gutter.
In the AB time period, the rain water drainage mechanism for opening/closing that exceeds standard is in opening and discharges the rainwater that exceeds standard, and until the cleaning rainwater arrival of B time point, at this moment, control module 9 will be judged this cleaning rainwater continuous segment flow process duration length T according to the real time data that detects section
y(promptly one section cleaning rainwater pollutant levels checkout equipment 3 from rectangle guiding gutter 1 begins, and continues to flow through the time of this pollutant levels checkout equipment 3).
1), if T
y<T
1+ T
2+ 2, when collecting this section cleaning rainwater, at first should get rid of the rainwater of the front pollutant levels section of exceeding standard fully, when arriving the B time point, close the rain water drainage mechanism for opening/closing that exceeds standard again, collect the cleaning rainwater.Light constantly from B, this section cleaning rainwater rear (being C moment point rear) dye substrate concentration exceed standard rainwater will be at T
yConstantly flow to the rain water drainage mechanism for opening/closing place that exceeds standard.After about 2 seconds of the reaction time of deduction control module 9, because T
y-2<T
1+ T
2, the rain water drainage mechanism for opening/closing that can complete opening when arriving exceeds standard for the rainwater that exceeds standard that guarantees C moment point rear, the rain water drainage mechanism for opening/closing directly changes opening process when closed fully as yet again in opening process exceeding standard.The valve plate of the issuable thus rain water drainage mechanism for opening/closing that exceeds standard moves up and down the conversion meeting causes higher-strength to the flow shape in the rectangle guiding gutter 1 interference at short notice continuously, particularly very short when the rainwater continuous segment duration up to standard, when the frequency that intermittence occurs is higher, this disturbance meeting is more violent, directly have influence on the accuracy that the transition process of hydrodynamics process and pollutant in 9 pairs of rectangle guiding gutters 1 of control module is judged, the rainwater that may cause exceeding standard is sneaked in the rainwater up to standard.Owing to the opening and closing time of the rain water drainage mechanism for opening/closing that exceeds standard is very short with respect to the rainfall runoff time, generally between 40~50 seconds, this part rainwater water yield up to standard seldom.Therefore, during practical operation control, will abandon continuous process duration T in the rectangle guiding gutter
y<T
1+ T
2+ 2 rainwater section up to standard, control module will be sent the instruction that keeps its former opening to the rain water drainage mechanism for opening/closing that exceeds standard this moment, and this time period rainwater up to standard will be got rid of with the rainwater that exceeds standard of back.
2), work as T
y〉=T
1+ T
2+ 2 o'clock, the rain water drainage mechanism for opening/closing that exceeds standard began to carry out shutoff operation, collects rainwater up to standard.Reach to close fully and need T
2Time second.Close finish after, enter the rectangle guiding gutter with collecting follow-up whole continuous rainwater up to standard until the rainwater that exceeds standard next time.
In the process of collecting rainwater up to standard, control module is obtained data continuously from checkout equipment 3 all the time, keeps detection and judgement to the water quality of rectangle guiding gutter admission section.When influent quality exceeds standard, control module will be calculated the time t that this rainwater that exceeds standard arrives the rain water drainage mechanism for opening/closing inlet section that exceeds standard
1, the t before the rainwater that exceeds standard arrives
1-T
2Constantly, send open command to the rain water drainage mechanism for opening/closing that exceeds standard, through T
2The time rain water drainage mechanism for opening/closing complete opening that exceeds standard, the rainwater that exceeds standard this moment just arrives the rain water drainage opening/closing device mechanism entrance that exceeds standard, and flows into the opening of rectangle guiding gutter bottom, and the gutter in the bottom exceeds standard the rain water drainage mechanism for opening/closing is discharged.This section rainwater exclusion process that exceeds standard will last till that there is rainwater up to standard the back to abandoned stream opening/closing device mechanism entrance.
By top analysis as can be known, has only T
y〉=T
1+ T
2, could carry out the switching motion of the rain water drainage mechanism for opening/closing that exceeds standard at+2 o'clock.That is to say that pollutant levels checkout equipment 3 must detect the preceding T of switching motion of abandoned stream mechanism for opening/closing
1+ T
2+ 2 constantly contaminated water flow substrate concentration situations could be controlled the switching motion of the rain water drainage mechanism for opening/closing that exceeds standard by control module 9.Be in the rectangle guiding gutter pollutant levels checkout equipment 3 to the minimum time of flow of the rain water drainage mechanism for opening/closing that exceeds standard should be more than or equal to the maximum close time and 9 reaction time of the control module sum of the maximum opening time of the rain water drainage mechanism for opening/closing that exceeds standard, the rain water drainage mechanism for opening/closing that exceeds standard.
In the above-described embodiment, rectangle guiding gutter 1 is smooth wide rectangular shallow chute, promptly should make flow width in the rectangle guiding gutter 1 much larger than flow depth, and the length of rectangle guiding gutter 1 is definite to the minimum time of flow of the rain water drainage mechanism for opening/closing that exceeds standard by pollutant levels checkout equipment 3, generally about 40 meters, the gradient is set in the retentive control groove current in the torrent fluidised form.
In the above-described embodiment, the rain water drainage mechanism for opening/closing that exceeds standard can be arranged on side or other place of rectangle guiding gutter 1, and as preferred version, the described rain water drainage mechanism for opening/closing that exceeds standard is arranged on the housing bottom of rectangle guiding gutter 1.Because suspended contaminant main in the rainfall runoff is generally all in the current bottom, promptly be positioned at rectangle guiding gutter 1 bottom and be the underflow state, the rain water drainage mechanism for opening/closing that will exceed standard is arranged on the housing bottom of rectangle guiding gutter 1, be beneficial to pollutant when the rain water drainage mechanism for opening/closing that exceeds standard is opened and discharge, thereby improve the collection quality that cleans rainwater.This embodiment also makes and exceeds standard that water (flow) direction is consistent in water (flow) direction and the upstream rectangle guiding gutter of collection process of the discharge process of rainwater and cleaning rainwater, guaranteed to discharge exceed standard rainwater and collect the cleaning rainwater need good hydrodynamics condition.
In above embodiment, the rain water drainage mechanism for opening/closing that exceeds standard can adopt general gate valve.As optimal way, the rain water drainage mechanism for opening/closing that exceeds standard comprises the draining valve plate 4 that is arranged on rectangle guiding gutter 1 housing bottom, rectangle guiding gutter 1 housing bottom has the current through hole 12 suitable with draining valve plate 4, is connected with the keying power set on draining valve plate 4.I.e. unlatching by draining valve plate 4 realizes to the discharging of the rainwater current that exceed standard and the collection of cleaning current up to standard that with closed the rainwater flow that the size of draining valve plate 4 is collected according to need determines that draining valve plate 4 shapes should conveniently be installed and processing and fabricating.
In the above-described embodiment, the keying power set that connect on the described draining valve plate 4 can be that cam mechanism or other mechanism that can drive 4 disengagements of draining valve plate and closure all can.As preferred implementation, described keying power set comprise the support 5 that is supported on draining valve plate 4 bottoms and are arranged on air bag 6 on the support 5, and air bag 6 is connected with air pressure tank 19, and air pressure tank 19 is connected with air pump 7, be provided with tank 8 below draining valve plate 4, air bag 6 is positioned at tank 8; Tube wall place at air bag 6 and air pressure tank 19 is provided with drain tap 20, is provided with charging valve 21 in the pipeline of drain tap 20 and air pressure tank 19, and described air pump 7, air pressure tank 19, drain tap 20 are electrically connected control module 9 with charging valve 21.When needing the current of opening water discharge valve plate 4 emission concentration over-standards, 9 pairs of drain taps 20 of control module send signal, drain tap 20 is opened and is carried out exhaust, exhaust is finished, drain tap 20 is closed, draining valve plate 4 is leaving water opening 12 under the effect of self gravitation and upper water pressure, discharges the rainwater that exceeds standard; When needs closed row water valve plate 4 is collected the cleaning rainwater, 9 pairs of charging valves 21 of control module send signal, charging valve 21 is opened, make the pipeline conducting between air bag 6 and the air pressure tank 19, Compressed Gas in the air pressure tank 19 to air bag 6 inflations, rely on make progress jacking draining valve plate and link gear thereof of air bag buoyancy closed fully with rectangle guiding gutter bottom opening place until draining valve plate 4 by pipeline.Charging valve 21 was closed after inflation finished; And when the pressure in the air pressure tank 19 can not satisfy inflation to air bag 6 and requires, air pump 7 work were carried out pressurized operation to air pressure tank 19.
In the above-described embodiment, support 5 can be suspended in the tank 8, as preferred implementation, tank 8 bottoms are set with pedestal 14, pedestal 14 is provided with slipping column 16, is set with sleeve 15 in draining valve plate 4 bottoms, and sleeve 15 is slidingly fitted on the slipping column 16.Then the rise and fall process of draining valve plate 4 is to slide up and down realization by sleeve 15 at slipping column 16, can improve the accuracy of draining valve plate 4 location.
In the above-described embodiment, in closing course, when draining valve plate 4 makes progress near current through hole 12, for making valve plate 4 close at current through hole 12 places fast, cut off current fully, be provided with corrosion resistant plate 10 at draining valve plate 4 two ends, be provided with the magnetic seal plate 11 corresponding with corrosion resistant plate 10 at rectangle guiding gutter 1 housing bottom, the magnetic attraction of 11 pairs of corrosion resistant plates 10 of magnetic seal plate is less than draining valve plate 4, corrosion resistant plate 10, the support 5 gravity sum with sleeve 15.Because the setting of magnetic seal plate 11, when draining valve plate 4 rose to soon with current through hole 12 closures, magnetic seal plate 11 can adsorb corrosion resistant plate 10 rapidly, thereby finishes the fast sealing closure; And the magnetic attraction of 11 pairs of corrosion resistant plates 10 of magnetic seal plate is set to the gravity sum less than draining valve plate 4, corrosion resistant plate 10, support 5 and sleeve 15, can make that when opening water discharge valve plate 4 draining valve plate 4 can descend smoothly.
For preventing that the bulk floating thing from entering in the tank 8, be provided with screen pack 13 at the upper body inwall of tank 8, the top of screen pack 13 extends to corrosion resistant plate 10 belows.Then when the 4 unlatching eliminatings of draining valve plate exceeded standard rainwater, the bulk suspension in the current can be filtered net 13 and block and can not enter in the tank 8, is beneficial to the normal rise and fall of support 5.
For getting rid of the silt of tank 8 bottoms, be provided with sand discharging pump 17 in tank 8 bottoms, be connected with the row's sand tube 18 that extends to outside the tank 8 on the sand discharging pump 17.Sand discharging pump 17 and the setting of arranging sand tube 18 can be opened sand discharging pump 17 after a period of time, the silt of tank 8 bottoms is discharged to outside the tank 8 through row's sand tube 18.
In the above embodiment, flow monitor 2 can directly adopt multiple flow-speed measurement instrument to realize, can satisfy general control accuracy requirement.As optimal way, described flow monitor 2 adopts supersonic Doppler flow rate detection system with depth of water checkout gear 22.Can check the flow velocity and the depth of water of rectangle guiding gutter 1 inlet section simultaneously.
Suspended contaminant concentration index SS is adopted in the differentiation of pollutant levels in the rainwater, and checkout gear is the general SS concentration meter that quantizes.
In the above embodiment, current enter before the rectangle guiding gutter 1, and the reply current carry out rectification, therefore, also be preferably in rectangle guiding gutter 1 the place ahead rectifying installation is set.