CN103981832A - Method and system for urban small river ecological water compensation scheduling - Google Patents
Method and system for urban small river ecological water compensation scheduling Download PDFInfo
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Abstract
The invention relates to a method and system for urban small river ecological water compensation scheduling. The system comprises a water compensation source, a water compensation pipe connected with a river and the water compensation source, a water compensation pump on the water compensation pipe and a water pump control cabinet corresponding to the water compensation pump. A flow meter is arranged in the river in the downstream direction opposite to an output port of the water compensation pipe, the flow meter and the water pump control cabinet are in communication connection with a central controlling machine, and the central controlling machine regulates the conveying capacity of the water compensation pump through the water pump control cabinet so as to regulate water compensation flow of a water compensation input point to the river. According to the method, the system is utilized to schedule river flow Q to enable the river flow Q to be within an interval [0.8m, Qm], and the river is always under the ecological conditions. According to the system and the method, the problems that due to the fact that the water compensation quantity is randomly determined in the prior art, great water resource and energy waste is caused, the running cost is too high, and implementation cannot be performed are solved; and the problem that some scheduling methods are complex and high in technical difficulty and not suitable for urban small rivers is solved.
Description
Technical field
The present invention relates to environmental protection and comprehensive utilization of resources technical field, specifically a kind of ecological water supplement dispatching method and system for urban small river.
Background technology
China is when fast economic growth, Urbanization Construction are obtained the achievement that attracts people's attention, because people exceedingly develop environmental resource, make the ecological environment problem of urban river more and more outstanding, Cut off, water pollution, the atrophy of storehouse, lake etc. are day by day serious.Especially for many ephemeral streams, dry season, cutout became normality.River is carried out to ecological water supplement, be considered to a kind of effective technical measures of urban small river water environmental problem that solve.Yet, existing urban small river ecological water charging system, the operation definite and moisturizing dispatching patcher of ubiquity rate of water make-up has the problem of very large randomness, as simply the water requirement simple superposition summations such as ecological environment outside aquatile habitat, view, dilution self-cleansing, sediment transport and river course obtained to river channel ecology environmental Water Requirement, make the river channel ecology environmental Water Requirement that calculates larger than actual aequum, cause great water resource and energy waste, operating cost is too high, and moisturizing dispatching patcher is difficult to maintain and performs practically no function.
The disclosed a kind of river ecological flow dispatching method based on reservoir operation of CN101892647B, in the method, first, set up basic scheme, compromise proposal and the ideal scheme of ecological flow management, to be applicable to respectively height, to neutralize low water supply fraction demand, and maintain basic, good and desirable urban river ecosystem health state, subregion is carried out in reservoir capacity space, from bottom to top corresponding above-mentioned ecological flow Managed Solution successively simultaneously; Then, adopt reservoir operation curve to instruct to the mankind and supply water, and be combined the reservoir ecological dispatching scheme of complete with ecological flow Managed Solution; And then utilization genetic algorithm, the water supply fraction that meets planning of take is basic constraint, the disturbance that reduces River Hydrology situation of take is optimization aim, and the parameters such as reservoir capacity subregion, dispatch curve are optimized, and obtains the river ecological flow Managed Solution based on reservoir operation.The method relates to the reservoir flow interval that becomes a mandarin and cuts apart, for the different flow situations that becomes a mandarin, need to set up kinds of schemes, the history parameters that dispatch curve relates to is numerous, whole regulate and control method is loaded down with trivial details, high cost for urban small river, and scheduling depends on reservoir, and also inapplicable for the river without reservoir source, applicability is lower.
Summary of the invention
The object of the present invention is to provide a kind of urban small river ecological moisturizing dispatching method and system, the refill flow that it can Automatic dispatching river ecological water charging system, solves existing dispatching method waste resource and loaded down with trivial details problem.
A urban small river ecological moisturizing dispatching method, specifically:
At upper river, moisturizing input point is set, moisturizing source is carried out moisturizing by moisturizing input point to river by moisturizing pipeline; Small pump is set as water delivery power set on moisturizing pipeline, and corresponding small pump arranges water pump control cabinet; In the river of the relative downstream direction of moisturizing input point, be provided with flow meter; The communication connection of described flow meter and water pump control cabinet is to control machine in, and middle control machine regulates and controls the conveying capacity of small pump by water pump control cabinet, to regulate and control the refill flow of moisturizing input point to river, discharge of river Q is placed in interval [0.8Qm, Qm],
Wherein, Qm-target flow, Qm=W/t, in formula: W-river channel ecology environmental Water Requirement, t-calculation interval;
Wherein, W=Wzf+Wsl+Wss+max ﹛ Wjl, Wjg, outside Wzj ﹜+W, in formula:
Wzf-river evaporation water requirement; Wsl-river seepage water requirement; Wss-river course sediment transport water requirement; Wjl-ecological basic discharge in river channel; Wjg-River Landscape environmental Water Requirement; Wzj-river dilution self-cleansing water requirement; W is outer-river course outside water demand of ecological environment;
River evaporation water requirement Wzf is calculated by unit area evaporation capacity * water surface area;
River seepage water requirement Wsl is calculated by the historical average water yield in leak factor * river;
River course sediment transport water requirement Wss is obtained by the mean value calculation of over the years month sand content;
Ecological basic discharge in river channel Wjl is calculated by Tennant method;
River Landscape environmental Water Requirement Wjg is calculated by Pavlov's Si base formula;
River dilution self-cleansing water requirement Wzj is calculated by the difference of present situation pollutant total load and target contaminant total load;
Outside river course, water demand of ecological environment W is outer is calculated by building area quota method.
Further, according to upper river, have or not reservoir, propose two kinds of ecological water supplement Automatic dispatching technical schemes.
Scheme one:
Upper river has reservoir, described moisturizing input point comprises reservoir moisturizing point and river moisturizing point, moisturizing pipeline passes through reservoir moisturizing point to reservoir moisturizing, reservoir passes through river moisturizing point to river moisturizing, river moisturizing point is arranged on the minimum ecological water level of reservoir place, and at river moisturizing point, electric control valve is set, reservoir is arranged to liquid-level switch, described flow meter and liquid-level switch are connected to a controller by signal cable, described controller connects electric control valve by control cables, described middle control machine is by GPRS network or 3G network and controller, water pump control cabinet communication connection, the reservoir level H that middle control machine is surveyed according to river discharge Q and liquid-level switch is to water pump control cabinet, controller sends instruction, refill flow with regulation and control reservoir moisturizing point and river moisturizing point, specifically comprise following regulation and control step:
(a) judgement reservoir level H: work as H=Hmax, small pump stops, and proceeds to step (b); As Hmin < H < Hmax, proceed to step (b); As H≤Hmin, electric control valve cuts out, and small pump starts, repeating step (a);
(b) judgement discharge of river Q: as Q < 0.8Qm, electric control valve is opened, and proceeds to step (a); All the other directly proceed to step (c);
(c) as Q >=Qm, electric control valve cuts out, and small pump stops, and proceeds to step (a); All the other directly proceed to step (a);
In above-mentioned steps, Hmax-reservoir top water level; The minimum ecological water level of Hmin-reservoir, adopts storehouse, lake morphological analysis to calculate.
Scheme two:
Described water pump control cabinet connects a controller by control cables, described middle control machine communicates to connect by GPRS network or 3G network and controller, described flow meter connects a remote I/O module by signal cable, described remote I/O module communicates to connect by GPRS network or 3G network and controller, middle control machine sends instruction with the conveying capacity of regulation and control small pump according to the measured river discharge Q of flow meter to water pump control cabinet, specifically regulates and controls step as follows:
(a) judgement discharge of river Q: as Q < 0.8Qm, small pump starts, and river starts moisturizing, proceeds to step (b); All the other repeating steps (a);
(b) as Q < Qm, small pump operation, river moisturizing continues, repeating step (b); As Q >=Qm, small pump stops, and river moisturizing is ended, and proceeds to step (a).
The regulation and control key parameter of this method is discharge of river Q, by the flow meter in dispatching patcher, real-time detected value is fed back in middle control machine, the regulation and control of middle control machine with reference to the target flow Qm for can definite value calculating, by middle control machine, the control of water pump control cabinet is reached the object that regulates small pump water delivery flow, and then discharge of river Q is controlled to definite interval [0.8Qm, Qm] in, guarantee that river is all the time under ecological condition.This method is is rationally accepted or rejected in the calculating of river channel ecology environmental Water Requirement W, and overcome rate of water make-up in prior art and arbitrarily determined,
Cause great water resource and energy waste, the too high and problem that cannot implement of operating cost; And some dispatching methods are loaded down with trivial details, controlled condition is complicated, and technical difficulty is high, cannot be applicable to the problem in urban small river.
And the situation that further has reservoir for upper river, moisturizing point in river is arranged on to the minimum ecological water level of reservoir place, reservoir level can be lower than its minimum ecological water level, to guarantee the ecological environment of reservoir, and be conducive to reservoir lower floor water exchange water, in regulation and control river discharge Q, guaranteed the ecological environment of reservoir.Situation for upper river without reservoir, whole adjusted and controlled effectively simple, river discharge Q is realized to single regulation and control.
In addition, the present invention also provides a kind of urban small river ecological moisturizing dispatching patcher, it comprises moisturizing source, connect river and the moisturizing pipeline in moisturizing source, the small pump on moisturizing pipeline and water pump control cabinet corresponding to small pump, in the river of the downstream direction of relative complement waterpipe delivery outlet, be provided with flow meter, described flow meter and water pump control cabinet communication connection are to control machine in.
Further, described river comprises the reservoir of its upstream, and the corresponding reservoir setting of output of described moisturizing pipeline, is provided with liquid-level switch in reservoir, and liquid-level switch is connected with a controller; At the minimum ecological water level of reservoir, place is provided with the flash mouth to river moisturizing, flash mouth is provided with electric control valve, flow meter is arranged in the river of downstream direction of relative flash mouth, described electric control valve is connected with controller with flow meter, described controller and the communication connection of middle control machine.
The flow meter of this dispatching patcher is as the signal acquisition device of system, for control machine in control core provides regulation and control foundation, middle control machine and then carry out moisturizing, this system architecture advantages of simple by controlling water pump control cabinet, required hardware unit is ripe easily to be implemented, can timely and effective moisturizing scheduling.And for upper river, have the structure of reservoir, and increasing liquid-level switch and obtain reservoir level situation, middle control machine, at associating river discharge and reservoir level, is realized the United Dispatching to reservoir and river, guarantees that to greatest extent the two is under ecological condition.And at the minimum ecological water level of reservoir place, be provided with flash mouth to river moisturizing as river moisturizing point, be conducive to reservoir lower floor water exchange water, guarantee the ecological environment of reservoir.
Accompanying drawing explanation
Fig. 1 is a kind of on-the-spot structure chart of dispatching method of the present invention;
Fig. 2 is the control framework figure that shown in Fig. 1, on-the-spot structure chart is corresponding;
Fig. 3 is the regulation and control flow chart that shown in Fig. 1, on-the-spot structure chart is corresponding;
Fig. 4 is the on-the-spot structure chart of the another kind of dispatching method of the present invention;
Fig. 5 is the control framework figure that shown in Fig. 4, on-the-spot structure chart is corresponding;
Fig. 6 is the regulation and control flow chart that shown in Fig. 4, on-the-spot structure chart is corresponding;
Fig. 7 is that the present invention calculates lake reservoir level that the minimum ecological water level Hmin of reservoir adopts and the graph of relation of water surface area rate of change.
Description of reference numerals: control machine in 1-; 2-controller; 3-liquid-level switch; 4-electric control valve; 5-flow meter; 6-water pump control cabinet; 7-small pump; 8-moisturizing pipeline; 9-remote I/O module.
The specific embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment mono-:
When upper river has reservoir, as Fig. 1 arranges, flash mouth is placed in to the minimum ecological water level Hmin of reservoir place, this flash mouth is as river moisturizing point, and electric control valve 4 is installed at flash mouth place, to let out the rate of water make-up in river under balancing reservoir.Moisturizing source is by moisturizing pipeline 8 to moisturizing in reservoir, and the output to reservoir of moisturizing pipeline 8 is reservoir moisturizing point, small pump 7 is set as water delivery power set on moisturizing pipeline 8, and the operation that water pump control cabinet 6 is controlled small pumps 7 is set.In relative moisturizing input point, by the river of downstream direction, flow meter 5 is set to record river discharge Q, reservoir is arranged to liquid-level switch 3 to detect in real time reservoir level H, flow meter 5 and liquid-level switch 3 are delivered to a controller 2 by detection signal by signal cable, and controller 2 is controlled the aperture of electric control valve 4 by control cables.
Said apparatus is arranged to control room, for settling control machine 1.1 pair of controller 2 of middle control machine and water pump control cabinet 6 are realized telecommunication by GPRS network or 3G network, as shown in Figure 2, Real-time Obtaining reservoir level H and river discharge Q, in interior reservoir top water level Hmax, the minimum ecological water level Hmin of reservoir and the target flow Qm parameter of arranging in advance of middle control machine 1, middle control machine 1 enters control program by the flow chart shown in accompanying drawing 3, is to regulate and control as follows:
(a) judgement reservoir level H: work as H=Hmax, small pump 7 stops, and proceeds to step (b); As Hmin < H < Hmax, proceed to step (b); As H≤Hmin, electric control valve 4 cuts out, and small pump 7 starts, repeating step (a);
(b) judgement discharge of river Q: as Q < 0.8Qm, electric control valve 4 is opened, and proceeds to step (a); All the other directly proceed to step (c);
(c) as Q >=Qm, electric control valve 4 cuts out, and small pump 7 stops, and proceeds to step (a); All the other directly proceed to step (a).
Because this example comprises reservoir moisturizing point and two moisturizing points of river moisturizing point, need to jointly control refill flow in conjunction with river discharge Q and reservoir level H, in the situation that guaranteeing reservoir level H, when river discharge Q is during lower than 0.8Qm, trigger river moisturizing, until river discharge Q reaches Qm.Can not only guarantee that like this reservoir level H can, lower than its minimum ecological water level Hmin, to guarantee the ecological environment of reservoir, and not be conducive to reservoir lower floor water exchange water.
Embodiment bis-:
When upper river is during without reservoir, it arranges relatively simple, and as shown in Figure 4, moisturizing input point is located at upper river, and the output in 8 pairs of rivers of moisturizing pipeline is moisturizing input point.With embodiment mono-, small pump 7 is set as water delivery power set on moisturizing pipeline 8, and the operation that water pump control cabinet 6 is controlled small pump 7 is set.Different is, one controller 2 is set as information terminal, water pump control cabinet 6 connects controller 2 by control cables, flow meter 5 connects a remote I/O module 9 by signal cable flow information is first transferred to controller 2, middle control machine 1 can adopt GPRS network or 3G network to be connected with 2 of controllers and controller 2 with 9 of remote I/O modules equally, as shown in Figure 5.In the interior prior Offered target flow Qm parameter of middle control machine 1, middle control machine 1 enters control program by the flow chart shown in Fig. 6 equally, that is:
(a) judgement discharge of river Q: as Q < 0.8Qm, small pump 7 starts, and river starts moisturizing, proceeds to step (b); All the other repeating steps (a);
(b) as Q < Qm, small pump 7 operations, river moisturizing continues, repeating step (b); As Q >=Qm, small pump 7 stops, and river moisturizing is ended, and proceeds to step (a).
When river discharge Q is during lower than 0.8Qm, trigger river moisturizing program, until river discharge Q reaches Qm, a moisturizing cycle completes.For dispatching conveniently, in water pump control cabinet 6, establish frequency converter, regulate small pump 7 rotating speeds to reach the object that regulates refill flow.
Due to what the present invention is directed to, be the situation that river needs moisturizing, for river abundant water phase or even flood period not in the modification scope of this programme.Moisturizing source in the present invention can be taken from the rivers that contiguous water resource is relatively abundant or be met municipal sewage plant's tail water of moisturizing condition of water quality.
The object of the invention is to make discharge of river Q to be placed in interval [0.8Qm, Qm], with the minimum flow requirement that ensures that river ecological environment needs.Wherein, Qm is target flow, by formula " Qm=W/t ", is calculated, and in formula: W is river channel ecology environmental Water Requirement, t is calculation interval;
Further, W value is calculated by formula " Wzj ﹜+W is outer for W=Wzf+Wsl+Wss+max ﹛ Wjl, Wjg ", in formula:
Wzf-river evaporation water requirement; Wsl-river seepage water requirement; Wss-river course sediment transport water requirement; Wjl-ecological basic discharge in river channel; Wjg-River Landscape environmental Water Requirement; Wzj-river dilution self-cleansing water requirement; W is outer-river course outside water demand of ecological environment.
The major function in river is to meet the requirement such as ecological environment water demand outside aquatile habitat, view, dilution self-cleansing, sediment transport and river course, and discharge of river Q should be able to meet the needs of above-mentioned functions simultaneously.For river channel ecology environmental Water Requirement W, owing to often exist intersecting between above-mentioned each subitem, overlapping, thereby can make result of calculation bigger than normal, unreasonable the summation that superposes of each subitem.Therefore,, for overlapping obvious Wjl value, Wjg value, Wzj value, employing is got peaked method and is solved the problem computing repeatedly.
Above-mentioned each value obtains according to prior art, specific as follows:
River evaporation water requirement Wzf is calculated by unit area evaporation capacity * water surface area, and basin evaporation capacity is determined by test; River seepage water requirement Wsl is calculated by the historical average water yield in leak factor * river, and leak factor is determined according to river underlying surface situation; River course sediment transport water requirement Wss is obtained by the mean value calculation of month sand content over the years, the river moon sand content data can be obtained by local Hydrological Bureau; Ecological basic discharge in river channel Wjl is calculated by Tennant method, and it determines base flow percentage according to river actual conditions; River Landscape environmental Water Requirement Wjg is calculated by Pavlov's Si base formula, when river landscape function is not remarkable, can ignore this value; River dilution self-cleansing water requirement Wzj is calculated by the difference of present situation pollutant total load and target contaminant total load, when there are good point, pollution of area source control measure in river along journey, can ignore this value; Outside river course, water demand of ecological environment W is outer is calculated by building area quota method, is mainly vegetation water requirement outside river course.
For the reservoir top water level Hmax also relating in embodiment mono-and the minimum ecological water level Hmin of reservoir.Reservoir top water level Hmax determines by the design library capacity of reservoir, and its numerical value can obtain from local water reservoir management department.The minimum ecological water level Hmin of reservoir maintains the lowest water level that serious degradation does not occur reservoir ecosystem, and minimum ecological water level is to the adjustable storage capacity that between top water level is reservoir.The minimum ecological water level Hmin of reservoir can utilize storehouse, lake morphological analysis to calculate.Circular is to utilize storehouse, lake measured water level and corresponding water surface area data, set up the relation curve of lake reservoir level and water surface area rate of change, as shown in Figure 7, corresponding water level value B when the maximum value of Lake area rate of change is A, water level value B is now the minimum ecological water level of reservoir.
In addition, the present invention also provides a kind of urban small river ecological moisturizing dispatching patcher, above-mentioned two embodiments of the method are all based on this system, it comprises moisturizing source, connect river and the moisturizing pipeline 8 in moisturizing source, the small pump 7 on moisturizing pipeline 8 and water pump control cabinet 6 corresponding to small pump 7, in the river of the downstream direction of relative complement waterpipe 8 delivery outlets, be provided with flow meter 5, described flow meter 5 and water pump control cabinet 6 communication connections are to control machine 1 in.The flow meter 5 of this dispatching patcher is as the signal acquisition device of system, for control machine 1 in control core provides regulation and control foundation, and middle control machine 1 and then control moisturizing by controlling water pump control cabinet 6.
For embodiment of the method one, because described river comprises the reservoir of its upstream, its corresponding system is further: the corresponding reservoir setting of output of described moisturizing pipeline 8, and liquid-level switch 3 is set in reservoir and obtains reservoir level situation, liquid-level switch 3 is connected with a controller 2, at the minimum ecological water level of reservoir, place is provided with the flash mouth to river moisturizing, flash mouth is provided with electric control valve 4, flow meter 5 is arranged in the river of downstream direction of relative flash mouth, described electric control valve 4 is connected with controller 2 with flow meter 5, described controller 2 and middle control machine 1 communication connection, middle control machine 1 associating river discharge and reservoir level, the United Dispatching of realization to reservoir and river, and at the minimum ecological water level of reservoir place, be provided with flash mouth to river moisturizing as river moisturizing point, be conducive to reservoir lower floor water exchange water, guarantee that to greatest extent the two is under ecological condition.
Claims (5)
1. a urban small river ecological moisturizing dispatching method, is characterized in that:
At upper river, moisturizing input point is set, moisturizing source is carried out moisturizing by moisturizing input point to river by moisturizing pipeline; Small pump is set as water delivery power set on moisturizing pipeline, and corresponding small pump arranges water pump control cabinet; In the river of the relative downstream direction of moisturizing input point, be provided with flow meter; The communication connection of described flow meter and water pump control cabinet is to control machine in, and middle control machine regulates and controls the conveying capacity of small pump by water pump control cabinet, to regulate and control the refill flow of moisturizing input point to river, discharge of river Q is placed in interval [0.8Qm, Qm],
Wherein, Qm-target flow, Qm=W/t, in formula: W-river channel ecology environmental Water Requirement, t-calculation interval;
Wherein, W=Wzf+Wsl+Wss+max ﹛ Wjl, Wjg, outside Wzj ﹜+W, in formula:
Wzf-river evaporation water requirement; Wsl-river seepage water requirement; Wss-river course sediment transport water requirement; Wjl-ecological basic discharge in river channel; Wjg-River Landscape environmental Water Requirement; Wzj-river dilution self-cleansing water requirement; W is outer-river course outside water demand of ecological environment;
River evaporation water requirement Wzf is calculated by unit area evaporation capacity * water surface area;
River seepage water requirement Wsl is calculated by the historical average water yield in leak factor * river;
River course sediment transport water requirement Wss is obtained by the mean value calculation of over the years month sand content;
Ecological basic discharge in river channel Wjl is calculated by Tennant method;
River Landscape environmental Water Requirement Wjg is calculated by Pavlov's Si base formula;
River dilution self-cleansing water requirement Wzj is calculated by the difference of present situation pollutant total load and target contaminant total load;
Outside river course, water demand of ecological environment W is outer is calculated by building area quota method.
2. urban small river ecological moisturizing dispatching method according to claim 1, is characterized in that:
Upper river has reservoir, described moisturizing input point comprises reservoir moisturizing point and river moisturizing point, moisturizing pipeline passes through reservoir moisturizing point to reservoir moisturizing, reservoir passes through river moisturizing point to river moisturizing, river moisturizing point is arranged on the minimum ecological water level of reservoir place, and at river moisturizing point, electric control valve is set, reservoir is arranged to liquid-level switch, described flow meter and liquid-level switch are connected to a controller by signal cable, described controller connects electric control valve by control cables, described middle control machine is by GPRS network or 3G network and controller, water pump control cabinet communication connection, the reservoir level H that middle control machine is surveyed according to river discharge Q and liquid-level switch is to water pump control cabinet, controller sends instruction, refill flow with regulation and control reservoir moisturizing point and river moisturizing point, specifically comprise following regulation and control step:
(a) judgement reservoir level H: work as H=Hmax, small pump stops, and proceeds to step (b); As Hmin < H < Hmax, proceed to step (b); As H≤Hmin, electric control valve cuts out, and small pump starts, repeating step (a);
(b) judgement discharge of river Q: as Q < 0.8Qm, electric control valve is opened, and proceeds to step (a); All the other directly proceed to step (c);
(c) as Q >=Qm, electric control valve cuts out, and small pump stops, and proceeds to step (a); All the other directly proceed to step (a);
In above-mentioned steps, Hmax-reservoir top water level; The minimum ecological water level of Hmin-reservoir, adopts storehouse, lake morphological analysis to calculate.
3. urban small river ecological moisturizing dispatching method according to claim 1, is characterized in that:
Described water pump control cabinet connects a controller by control cables, described middle control machine communicates to connect by GPRS network or 3G network and controller, described flow meter connects a remote I/O module by signal cable, described remote I/O module communicates to connect by GPRS network or 3G network and controller, middle control machine sends instruction with the conveying capacity of regulation and control small pump according to the measured river discharge Q of flow meter to water pump control cabinet, specifically regulates and controls step as follows:
(a) judgement discharge of river Q: as Q < 0.8Qm, small pump starts, and river starts moisturizing, proceeds to step (b); All the other repeating steps (a);
(b) as Q < Qm, small pump operation, river moisturizing continues, repeating step (b); As Q >=Qm, small pump stops, and river moisturizing is ended, and proceeds to step (a).
4. a urban small river ecological moisturizing dispatching patcher, comprise moisturizing source, connect river and the moisturizing pipeline in moisturizing source, the small pump on moisturizing pipeline and water pump control cabinet corresponding to small pump, it is characterized in that: in the river of the downstream direction of relative complement waterpipe delivery outlet, be provided with flow meter, described flow meter and water pump control cabinet communication connection are to control machine in.
5. urban small river ecological moisturizing dispatching patcher according to claim 4, it is characterized in that: described river comprises the reservoir of its upstream, the corresponding reservoir setting of output of described moisturizing pipeline, is provided with liquid-level switch in reservoir, liquid-level switch is connected with a controller; At the minimum ecological water level of reservoir, place is provided with the flash mouth to river moisturizing, flash mouth is provided with electric control valve, flow meter is arranged in the river of downstream direction of relative flash mouth, described electric control valve is connected with controller with flow meter, described controller and the communication connection of middle control machine.
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