CN110264067A - A kind of calculation method of secondary water-supply water storage apparatus inlet flow rate - Google Patents
A kind of calculation method of secondary water-supply water storage apparatus inlet flow rate Download PDFInfo
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- 238000004364 calculation method Methods 0.000 title claims abstract description 32
- 239000008400 supply water Substances 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 211
- 238000011897 real-time detection Methods 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims description 14
- 230000000717 retained effect Effects 0.000 claims description 4
- 239000008399 tap water Substances 0.000 abstract description 33
- 235000020679 tap water Nutrition 0.000 abstract description 33
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000002906 microbiologic effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 7
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 5
- 229910052801 chlorine Inorganic materials 0.000 description 5
- 239000000460 chlorine Substances 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 238000005660 chlorination reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009736 wetting Methods 0.000 description 3
- 125000001309 chloro group Chemical group Cl* 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
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- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
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- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
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Abstract
The invention discloses a kind of calculation methods of secondary water-supply water storage apparatus inlet flow rate, comprising the following steps: Step 1: calculating the theory rate of discharge in different time periods at one day according to the historical data of several days rates of discharge recently；Step 2: according to step 1 as a result, calculating theory of the water storage apparatus in one day different time sections start time when giving the residence time retains water；Step 3: calculating water storage apparatus in one day inlet flow rate in different time periods as a result, retain water in conjunction with what real-time detection obtained according to step 1 and step 2.The technical problem to be solved by the present invention is to can quantitatively control residence time of the tap water in water storage apparatus, to reduce to the maximum extent because tap water the residence time is too long in water storage apparatus caused by the exceeded risk of microbiological indicator, it is small to the change of existing equipment simultaneously, it is easy to implement, and energy consumption, maintenance cost and the operating cost when actual motion are all very low.
Description
Technical field
The present invention relates to public supply mains secondary system water supply field more particularly to a kind of secondary water-supply water storage apparatus into
The calculation method of mouth flow.
Background technique
The disinfection overwhelming majority of China's urban life drinking water (being commonly called as tap water) is using chlorination method at present.Chlorine disappears
The outstanding advantages of malicious method are that chlorine residue has lasting disinfection, and when chlorine residue is meant with chlorination, chlorination is contacted after a certain period of time,
Remaining chlorine dose in water.Passage of the residual chlorine concentration in public supply mains system at any time can gradually decay, and supply in city
Enough residual chlorine concentrations are kept in pipe network system it is ensured that the microorganism in tap water is controlled in acceptability limit.
Secondary water-supply refers to that when civilian be more than the public confession in cities and towns with requirement of the industrial building Drinking Water to hydraulic pressure, water
When water or self-built facility water supply network ability, user or personal way of supplying water are supplied through pipeline by the facilities such as storing, pressurizeing.
Secondary water-supply facility mainly includes water storage apparatus, pressurized equipment and pipeline three parts.Tap water secondary water-supply water storage apparatus (with
Lower abbreviation water storage apparatus) in can stay for some time, residual chlorine concentration may decay to very low water if the residence time is too long
It is flat, the effect for effectively killing microorganism in water is not had, causes the microbiological indicator of tap water in water storage apparatus exceeded.Therefore to the greatest extent
Residence time of the amount reduction tap water in water storage apparatus has great significance.
Tap water in water storage apparatus is to be extracted by water pump or automatically flowed into from public supply mains system.Water storage
Equipment importation flow refers to the flow of a certain moment tap water of water storage apparatus entrance.Water storage apparatus rate of discharge (hereinafter referred to as goes out
Mouthful flow) refer to the flow of a certain moment tap water in water storage apparatus exit, size uses water by the serviced user's of water storage apparatus
Situation determines.Water storage apparatus retains the totality that water (hereinafter referred to as retaining water) refers to a certain moment tap water in water storage apparatus
Product, retain water number and the size of rate of discharge determine residence time of the tap water in water storage apparatus.At present to depositing
The control of water is stayed mainly to realize by the altitude valve in water storage apparatus, when the water level decreasing in water storage apparatus is super
When crossing preset value, altitude valve is opened and water supply start, and when water level rises to preset height, altitude valve is closed
And stop supplying water, this control method absolutely not considers the problems of tap water residence time in water storage apparatus.Someone at present
It is proposed adjusts water pump according to the size of actual used water amount to the water supply of water storage apparatus, is specifically exactly when water consumption is big
The water supply for increasing water pump, the water supply of water pump is reduced in water consumption hour, and this method of supplying water mainly can solve in water consumption
Guarantee to supply water when big sufficient, the problem of water consumption hour minimization waste and water pump are lost.But due to this water supply side
Method, therefore can not be according to given without specially considering to retain water and tap water in water storage apparatus the quantitative relationship of residence time
Residence time quantifies calculating and retains water, also can not just be calculated come quantitative to the water supply of water storage apparatus according to the given residence time
Amount, the result is that quantitative control can not be carried out to residence time of the tap water in water storage apparatus, the given residence time here refers to
In order to guarantee tap water quality a period of time length given by man safely, pass through in the water that retains of start time this period
Water storage apparatus is all flowed out after this period.So far, how quantitative is carried out to residence time of the tap water in water storage apparatus
System is still the problem not solved.
In order to solve the above-mentioned technical problem, Chinese patent notification number is the prior art of CN105442670B at 2017 9
Disclose within 1st a kind of building water supply pipeline circulatory system and method for secondary water-supply water quality guarantee the moon, which includes building
Build water supply register one's residence pipe, promotion or water storage device, flow measurement or detection device, counter flow controller, building water supply standpipe, building family
Interior conduit and tap, return pipe, ultraviolet/titanium dioxide sterilizer, return flow solenoid valve, non-return valve.When just commonly using water, municipal administration is certainly
Water is sent to building family through register one's residence pipe, promotion or water storage device, flow measurement or detection device, building water supply standpipe of building water supply
Interior conduit and tap.The patent is when the hydraulic detention time of the tap water of secondary water-supply reaches 2 hours or more, building water supply
Water in standpipe is registered one's residence pipe or water storage device by back flowing back into building water supply after return pipe and ultraviolet/titanium dioxide sterilizer
It is interior, after being mixed with fresh tap water again by secondary water supply system for users to use, make the life of tap water in secondary water supply system
Object safety and chemical safety are protected.But in actual use, this processing mode still cannot be to originally
Residence time of the water in water storage apparatus carries out quantitative control, and changes larger, energy consumption, maintenance cost and operation to existing equipment
Cost is all especially high.
Summary of the invention
It is an object of the invention to overcome the above-mentioned problems in the prior art, a kind of secondary water-supply water storage apparatus is provided
The calculation method of inlet flow rate, the technical problem to be solved by the present invention is to can quantitatively control tap water in water storage apparatus
Residence time, thus reduce to the maximum extent because tap water the residence time is too long in water storage apparatus caused by microbiological indicator
Exceeded risk, at the same it is small to the change of existing equipment, it is easy to implement, and energy consumption, maintenance cost and operation when actual motion
Cost is all very low.
To achieve the above object, The technical solution adopted by the invention is as follows:
A kind of calculation method of secondary water-supply water storage apparatus inlet flow rate, which comprises the following steps:
Step 1: calculating the theoretical outlet in different time periods at one day according to the historical data of several days rates of discharge recently
Flow；
Step 2: according to step 1 as a result, calculating in the given residence time water storage apparatus in one day difference
Between the theory of section start time retain water；
Step 3: according to step 1 and step 2 as a result, retain water in conjunction with what real-time detection obtained, it is each at one day
Inlet flow rate of the water storage apparatus in the period is calculated at the beginning of period, calculates water storage apparatus according to this in one day difference
The inlet flow rate of period.
The calculation method of the step 1 are as follows: be divided into N number of period for one day, indicate different time in one day with i
The ordinal number of section, the rate of discharge that detection in continuous E days obtains of taking over are calculated, then:
Wherein, in formula (1)Indicate that the rate of discharge that detection obtains, d indicate the ordinal number on one section of continuous date, d/i
Indicate that the date is the i period of d that day, the abbreviation d/i period, c indicates the sequence of the rate of discharge measured in the d/i period
Number, Ad/iIndicate the total number of the rate of discharge measured in the d/i period,Expression is obtained in all detections of d/i period
The arithmetic average of rate of discharge；In formula (2)Indicate the theoretical rate of discharge of i period being calculated, be continuous E days
The i period is all to be calculatedArithmetic average.
The calculation method of the step 2 are as follows: the total duration that one day is indicated with M was divided into N number of period, M/ for one day
N indicates the duration of each period, indicates ordinal number in different time periods in one day with i, then:
M in formula (5)iIt is calculated by following formula (6) formula:
Wherein, W in formula (3)1It indicates that water storage apparatus is minimum and retains water, β is the minimum amount of water coefficient of settingAccording to
The average value for the water storage apparatus one day outflow total Water that historical data is calculated；
In formula (4)Indicate the continuous n since period iiThe sum of a period water storage apparatus outflow water maximum value,
The setting of this parameter is to guarantee that the tap water in water storage apparatus is at least able to satisfy user and use niA period；Mod is to ask
Remaining operator；((i+a-2) mod N+1) indicates period (i+a-1), indicates it is to meet period expression in this way
Requirement of the formula (i+a-1) no more than period sum N；It indicates in same period (i
+ a-1) in ownIn maximum value；
In formula (5)Indicate the continuous m since period iiThe sum of a period water storage apparatus theory outflow water；
T in formula (6)iIndicate the given residence time in i start time period；
W in formula (7)a/iIndicate that the water storage apparatus obtained by calculation in the given residence time starts in the i period
The theory at moment retains water, and max { } is the operator of maximizing.
The calculation method of the step 3 are as follows: the water storage apparatus that setting real-time detection obtains is in i start time period
Retaining water is Wb/i, then:
In formula (8)Indicate inlet flow rate of the water storage apparatus in the i period, Wa/(i mod N+1)For storage obtained by calculation
Theory of the wetting system in (i+1) start time period retains water, when indicating that (i+1) is to meet with (i mod N+1)
Between section expression formula (i+1) no more than period sum N requirement.
It is calculated according to the historical data of nearest 20-40 days rates of discharge in one day reason in different time periods in the step 1
By rate of discharge.
Using the present invention has the advantages that
The present invention is realized by finding the quantitative relationship for retaining water and tap water between the residence time in water storage apparatus
Water is retained come quantitative calculating according to the given residence time, inlet flow rate is calculated further according to the calculated watermeter that retains, by calculating
Inlet flow rate out carries out quantitative control to water storage apparatus residence time that can be achieved with to tap water in water storage apparatus of supplying water,
Reduce to the maximum extent because tap water the residence time is too long in water storage apparatus caused by the exceeded risk of microbiological indicator, together
When it is small to the change of existing equipment, it is easy to implement, and energy consumption, maintenance cost and the operating cost when actual motion are all very low.
Detailed description of the invention
Fig. 1 is work flow diagram of the invention.
Fig. 2 is rate of discharge theoretical in step 1 of the present invention in one day variation diagram in different time periods.
Fig. 3 is that theory retains water in one day variation diagram in different time periods in step 2 of the present invention.
Specific embodiment
Embodiment 1
Present embodiments provide a kind of calculation method of secondary water-supply water storage apparatus inlet flow rate comprising following steps:
Step 1: calculating the theoretical outlet in different time periods at one day according to the historical data of several days rates of discharge recently
Flow can specifically calculate at one day theory outlet stream in different time periods according to the historical data of nearest 20-40 days rates of discharge
Amount.
The specific calculation method of this step are as follows: N number of period was divided by one day, when indicating different in one day with i
Between section ordinal number, take over and detect within continuous E days obtained rate of discharge and calculated, then:
Wherein, in formula (1)Indicate that the rate of discharge that detection obtains, d indicate the ordinal number on one section of continuous date, d/i
Indicate that the date is the i period of d that day, the abbreviation d/i period, c indicates the sequence of the rate of discharge measured in the d/i period
Number, Ad/iIndicate the total number of the rate of discharge measured in the d/i period,Expression is obtained in all detections of d/i period
The arithmetic average of rate of discharge；In formula (2)Indicate the theoretical rate of discharge of i period being calculated, be continuous E days
The i period is all to be calculatedArithmetic average, embody rate of discharge at one day variation in different time periods rule
Rule.
Step 2: according to step 1 as a result, calculating in the given residence time water storage apparatus in one day difference
Between the theory of section start time retain water.
The specific calculation method of this step are as follows: the total duration that one day is indicated with M was divided into N number of period for one day,
M/N indicates the duration of each period, indicates ordinal number in different time periods in one day with i,WithMeaning it is the same,
Then:
M in formula (5)iIt is calculated by following formula (6) formula:
Wherein, W in formula (3)1It indicates that water storage apparatus is minimum and retains water, the setting of this parameter is to guarantee user base
Required with water, β be setting minimum amount of water coefficient,It flows out within water storage apparatus one day to be calculated according to historical data total
The average value of water.
In formula (4)Indicate the continuous n since period iiThe sum of a period water storage apparatus outflow water maximum value,
The setting of this parameter is to guarantee that the tap water in water storage apparatus is at least able to satisfy user and use niA period；Mod is to ask
Remaining operator；((i+a-2) mod N+1) indicates period (i+a-1), indicates it is to meet period expression in this way
Requirement of the formula (i+a-1) no more than period sum N；It indicates in same period (i
+ a-1) in ownIn maximum value.
In formula (5)Indicate the continuous m since period iiThe sum of a period water storage apparatus theory outflow water, reason
Refer to by outflow water according to the outflow water being calculated with period theory rate of discharge.
T in formula (6)iIndicate in the given residence time of i start time period, refer in order to guarantee water quality safety artificially to
Fixed a period of time length, at the beginning of being the i period at the beginning of this period, in depositing for i start time period
Stay water by this period, all outflow water storage apparatus, given residence time were the key that realize that quantitative calculate retains water ginseng
Number, retain water by the given residence time to determine, it is ensured that the tap water in water storage apparatus the given residence time just
Water storage apparatus is all flowed out in normal variation range, for convenience of calculation, sets TiIt is the integral multiple of period duration.
W in formula (7)a/iIndicate that the water storage apparatus obtained by calculation in the given residence time starts in the i period
The theory at moment retains water, theory here retain water be in order to be different from it is actually detected obtain retain water and refer in particular to
Water is retained by what is be calculated above；Max { } is the operator of maximizing.
Step 3: according to step 1 and step 2 as a result, retain water in conjunction with what real-time detection obtained, it is each at one day
Inlet flow rate of the water storage apparatus in the period is calculated at the beginning of period, calculates water storage apparatus according to this in one day difference
The inlet flow rate of period.It is supplied water according to the inlet flow rate obtained, that is, is able to achieve and tap water is stopped in water storage apparatus
The time is stayed to carry out quantitative control.
The circular of this step are as follows: the total duration that one day is indicated with M was divided into N number of period, M/ for one day
N indicates the duration of each period, indicates ordinal number in different time periods in one day with i,WithMeaning it is the same, setting
Retain water of the water storage apparatus that real-time detection obtains in i start time period is Wb/i, then:
In formula (8)Indicate inlet flow rate of the water storage apparatus in the i period, Wa/(i mod N+1)For storage obtained by calculation
Theory of the wetting system in (i+1) start time period retains water, when indicating that (i+1) is to meet with (i mod N+1)
Between section expression formula (i+1) no more than period sum N requirement.
The calculation method of secondary water-supply water storage apparatus inlet flow rate described in the present embodiment is suitable for the water supply of lower water box, height
The water supply that the water supply of position water tank and lower water box are combined with high water tank.
Embodiment 2
On the basis of embodiment 1, the present embodiment combines specific data to be further described, the secondary water-supply water storage
The calculation method of equipment importation flow comprising following steps:
Step 1: being divided into 24 periods for one day, ordinal number in different time periods in one day is indicated with i, preferably
The rate of discharge that detection in continuous 30 days obtains of taking over is calculated, then:
Wherein, in formula (1)The rate of discharge that detection obtains is indicated, by the stream for being mounted on water storage apparatus exit
Meter real-time detection obtains, and acquires a data, unit m per minute3/ h, wherein d indicates the ordinal number on one section of continuous date,
D/i indicates that the date is the i period of d that day, and the abbreviation d/i period, c indicates the suitable of the rate of discharge measured in the d/i period
Ordinal number, the total number for the rate of discharge that preferably each period measures are 60,It indicates in all detections of d/i period
The arithmetic average of obtained rate of discharge, unit m3/h；In formula (2)Indicate that the theory for the i period being calculated goes out
Mouthful flow all is calculated for continuous 30 days in the i periodArithmetic average, unit m3/ h embodies outlet
For flow in one day changing rule in different time periods, calculated result was as shown in Figure 2.
Step 2: one day total duration is that for 24 hours, will be divided within one day 24 periods, each period when it is a length of
1h indicates ordinal number in different time periods in one day with i,WithMeaning it is the same, then:
Wherein, W in formula (3)1It indicates that water storage apparatus is minimum and retains water, unit m3, the setting of this parameter is to guarantee
User is most basic to be required with water, such as can set minimum amount of water coefficient as 0.07, the water storage being calculated according to historical data
The average value of equipment one day outflow total Water is 121m3；In formula (4)Indicate continuous 2 periods storage since period i
Wetting system flows out the sum of water maximum value, indicates that the tap water in water storage apparatus is at least able to satisfy user and uses 2 periods；
Mod is complementation operator；((i+a-2) mod 24+1) indicates period (i+a-1), when expression is to meet in this way
Between section expression formula (i+a-1) no more than period sum 24 requirement；It indicates same
Own in one period ((i+a-2) mod 24+1)In maximum value.
Wherein numerical value 3 is calculated by following formula:
mi=3/1=3 (6)
In formula (5)Indicate the sum of continuous 3 periods water storage apparatus theory outflow water, reason since period i
Refer to by outflow water according to the outflow water being calculated with period theory rate of discharge；When setting gives stop in formula (6)
Between be 3h, the given residence time refers in order to guarantee water quality safety a period of time length given by man, at the beginning of this period
It carves at the beginning of being the i period, all flows out water storage after this period in the water that retains of i start time period and set
Standby, the given residence time is to realize the quantitative key parameter for calculating and retaining water, retains water by the given residence time to determine,
It is ensured that the tap water in water storage apparatus all flows out water storage apparatus within the scope of the normal variation of given residence time.
W in formula (7)a/iIndicate the water storage apparatus obtained by calculation in the case where the given residence time is 3h in the i time
Section start time theory retain water, theory here retain water be in order to be different from it is actually detected obtain retain water
And it refers in particular to retain water by what is be calculated above；Max { } is the operator of maximizing.
Following table is calculated W some day1、And Wa/iAs a result, shadow region indicates the subfield value quilt
Using:
Step 3: one day total duration is that for 24 hours, will be divided within one day 24 periods, each period when it is a length of
1h indicates ordinal number in different time periods in one day with i, mod andMeaning it is the same, then:
In formula (8)Indicate water storage apparatus obtained by calculation in the inlet flow rate of i period, unit m3/h；Wb/i
The water storage apparatus for indicating that real-time detection obtains retains water in i start time period, passes through what is installed in water storage apparatus
Water detection device real-time detection obtains, unit m3；Wa/(i mod 24+1)It is water storage apparatus obtained by calculation at (i+1)
Between the theory of section start time retain water, indicate that (i+1) is to meet period expression formula (i+1) with (i mod 24+1)
No more than the requirement of period sum 24, unit m3.Following table is that the present embodiment calculated some day is in different time periods
Inlet flow rate:
| Period | Inlet flow rate (m3/h) |
| 1 | 2.1 |
| 2 | 1.3 |
| 3 | 1.6 |
| 4 | 6.9 |
| 5 | 7.6 |
| 6 | 7.8 |
| 7 | 6.9 |
| 8 | 5.5 |
| 9 | 5.8 |
| 10 | 5.9 |
| 11 | 3.3 |
| 12 | 2.1 |
| 13 | 3.2 |
| 14 | 3.6 |
| 15 | 7.7 |
| 16 | 9.1 |
| 17 | 8.4 |
| 18 | 7.6 |
| 19 | 7.7 |
| 20 | 4.9 |
| 21 | 2 |
| 22 | 1.1 |
| 23 | 1.4 |
| 24 | 2 |
Inlet flow rate in different time periods supplies water to water storage apparatus in one day obtained according to step 3, can determine
It residence time of the amount control tap water in water storage apparatus, is stopped in water storage apparatus to reduce to the maximum extent because of tap water
The exceeded risk of microbiological indicator caused by overlong time, at the same it is small to the change of existing equipment, it is easy to implement, and practical fortune
Energy consumption, maintenance cost and operating cost when row is all very low.
Claims (5)
1. a kind of calculation method of secondary water-supply water storage apparatus inlet flow rate, which comprises the following steps:
Step 1: calculating the theory outlet stream in different time periods at one day according to the historical data of several days rates of discharge recently
Amount；
Step 2: according to step 1 as a result, calculating in the given residence time water storage apparatus in one day different time sections
The theory of start time retains water；
Step 3: according to step 1 and step 2 as a result, water is retained in conjunction with what real-time detection obtained, in one day each time
Inlet flow rate of the water storage apparatus in the period is calculated at the beginning of section, calculates water storage apparatus according to this in one day different time
The inlet flow rate of section.
2. a kind of calculation method of secondary water-supply water storage apparatus inlet flow rate according to claim 1, it is characterised in that: institute
State the calculation method of step 1 are as follows: it was divided into N number of period by one day, indicates ordinal number in different time periods in one day with i,
The rate of discharge that detection in continuous E days obtains of taking over is calculated, then:
Wherein, in formula (1)Indicate that the rate of discharge that detection obtains, d indicate that the ordinal number on one section of continuous date, d/i indicate
Date is the i period of d that day, and the abbreviation d/i period, c indicates the ordinal number of the rate of discharge measured in the d/i period, Ad/i
Indicate the total number of the rate of discharge measured in the d/i period,Indicate the outlet stream obtained in all detections of d/i period
The arithmetic average of amount；In formula (2)It indicates the theoretical rate of discharge for the i period being calculated, is continuous E days in the i time
What Duan Suoyou was calculatedArithmetic average.
3. a kind of calculation method of secondary water-supply water storage apparatus inlet flow rate according to claim 2, it is characterised in that: institute
State the calculation method of step 2 are as follows: the total duration that one day is indicated with M was divided into N number of period for one day, and M/N indicates each
The duration of period indicates ordinal number in different time periods in one day with i, then:
M in formula (5)iIt is calculated by following formula (6) formula:
Wherein, W in formula (3)1It indicating that water storage apparatus is minimum and retains water, β is the minimum amount of water coefficient of setting,For according to history
The average value for the water storage apparatus one day outflow total Water that data are calculated；
In formula (4)Indicate the continuous n since period iiThe sum of a period water storage apparatus outflow water maximum value；mod
It is complementation operator；((i+a-2) modN+1) indicates period (i+a-1), indicates to be to meet the period in this way
Requirement of the expression formula (i+a-1) no more than period sum N；It indicates in the same time
Own in section (i+a-1)In maximum value；
In formula (5)Indicate the continuous m since period iiThe sum of a period water storage apparatus theory outflow water；
4 in formula (6)iIndicate the given residence time in i start time period；
W in formula (7)a/iIndicate the water storage apparatus obtained by calculation in the given residence time in i start time period
Theory retain water, max { } is the operator of maximizing.
4. a kind of calculation method of secondary water-supply water storage apparatus inlet flow rate according to claim 3, it is characterised in that: institute
State the calculation method of step 3 are as follows: set water storage apparatus that real-time detection obtains i start time period retain water as
W3/i, then:
V in formula (8)i 2Indicate inlet flow rate of the water storage apparatus in the i period, Wa/(imodN+1)For water storage apparatus obtained by calculation
Water is retained in the theory of (i+1) start time period, is to meet period expression with (imodN+1) expression (i+1)
Requirement of the formula (i+1) no more than period sum N.
5. a kind of calculation method of secondary water-supply water storage apparatus inlet flow rate according to claim 1 or 2, feature exist
In: it calculates to go out in one day theory in different time periods according to the historical data of nearest 20-40 days rates of discharge in the step 1
Mouth flow.
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