CN108534843A - A kind of homostrobe flow calibration method and apparatus of open channel canal for water conveyance - Google Patents
A kind of homostrobe flow calibration method and apparatus of open channel canal for water conveyance Download PDFInfo
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- CN108534843A CN108534843A CN201810175872.XA CN201810175872A CN108534843A CN 108534843 A CN108534843 A CN 108534843A CN 201810175872 A CN201810175872 A CN 201810175872A CN 108534843 A CN108534843 A CN 108534843A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/002—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow wherein the flow is in an open channel
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/52—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring the height of the fluid level due to the lifting power of the fluid flow
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- General Physics & Mathematics (AREA)
- Flow Control (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a kind of homostrobe flow calibration method and apparatus of open channel canal for water conveyance, and this approach includes the following steps：1) measuring apparatus is used to collect the related data of the corresponding gatage and head difference of overcurrent flow of gate；2) data on flows in measured data is compared with gatage, acquires ratio；3) certain lock flow and the corresponding upstream and downstream head difference DELTA z of gatage are acquired by the upstream and downstream depth of water；4) flow calibration formula is established, final CAP models are determined with the method that mathematical regression is analyzed come tri- parameters of A, B, C in calibration formula according to measured data；5) by actually measuring upstream and downstream head difference DELTA z and gatage e, the CAP models acquired is carried it into, corresponding lock flow Q is calculated.There is the gate lock flow that the method for the present invention is calculated higher precision, method to be easily achieved.
Description
Technical field
The present invention relates to water project management technology more particularly to a kind of homostrobe flow calibration sides of open channel canal for water conveyance
Method and device.
Background technology
China's water resource has that spatial and temporal distributions unevenness, aggregate performance are that less, Xia Duodong is few in south mostly north.With economy
Development, the contradiction of water resource becomes increasingly conspicuous.To solve the problems, such as that water resource spatial distribution is uneven, China has built many large sizes
Water diversion project.These engineerings promote the reasonable disposition of China's water resource, strengthen interlocal coordinated development, produce huge
Economic benefit and social benefit.
Operational management for water diversion project, outflow from sluice hole system are its cores.Dispatch the important of the performance of system function
On condition that the accuracy of gate flow-aperture relationship.The overcurrent form of gate generally can be divided into three kinds：Weir flow, lock hole freely go out
Stream is flooded in stream, lock hole.The overcurrent form of most of engineering gate is typically just one such.Traditional lock hole free discharge
It is as follows with the flow rate calculation formula that floods stream：
In formula：
μ is lock hole free discharge or floods the discharge coefficient of stream；
E is gatage；
B is gate widths；
H0For gross head before lock.
Since the discharge coefficient μ in above-mentioned formula is related with gatage factor, therefore calibration result precision is not high, with the public affairs
There are larger errors with measured discharge for the calculated lock flow of formula.This makes occur water loss or defeated in water transfer process
The problems such as water shortage, seriously affects the normal water transfer of engineering.
Invention content
The technical problem to be solved in the present invention is for the defects in the prior art, to provide a kind of open channel canal for water conveyance
Homostrobe flow calibration method and apparatus.
The technical solution adopted by the present invention to solve the technical problems is：A kind of homostrobe rate of discharge of open channel canal for water conveyance
Determine method, includes the following steps：
1) measuring apparatus is used to collect the related data of the corresponding gatage and head difference of overcurrent flow of gate；
2) data on flows in measured data is compared with gatage, acquires ratio Q/e, wherein Q is the gate of acquisition
Overcurrent data on flows；E is corresponding gatage data；
3) certain lock flow and the corresponding upstream and downstream head difference DELTA z of gatage are acquired by the upstream and downstream depth of water；
4) flow calibration formula is established, according to measured data, with the method that mathematical regression is analyzed come A, B, C in calibration formula
Three parameters determine final CAP models；The formula is as follows：
Wherein, A, B, C are the parameter for needing calibration；
5) by actually measuring upstream and downstream head difference DELTA z and gatage e, the CAP models acquired is carried it into, are calculated
Go out corresponding lock flow Q；
6) it by water levels of upstream and downstream difference DELTA z and gatage e value in a certain range, is carried out also according to CAP models
It calculates, result of calculation tabulation obtains water levels of upstream and downstream difference DELTA z, gatage e and lock flow Q relation tables.
A kind of homostrobe flow calibration device of open channel canal for water conveyance, including：
Measured data harvester is opened for acquiring by the corresponding gate of the overcurrent flow of measuring apparatus collection gate
The related measured data of degree and head difference, the measured data include the lock flow of gate, gatage and it is corresponding on
Downstream head difference；
Parameter calibration device is used for according to measured data, with the method that mathematical regression is analyzed come A, B, C tri- in calibration formula
A parameter determines final CAP models；The formula is as follows：
Wherein, A, B, C are the parameter for needing calibration；
Flow determining device actually measures upstream and downstream head difference DELTA z and gatage e for passing through, carries it into and ask
The CAP models obtained, calculate corresponding lock flow Q；
Flow input unit, the lock flow actually required for inputting gate；
Volume control device, for obtaining the actually required lock flow and sensor of gate according to flow input unit
Head difference brings CAP models into before and after the lock of acquisition, acquires corresponding gatage, and control command is exported to gate to control and is filled
It sets, gate is made to be adjusted to suitable aperture, to obtain accurate lock flow.
The beneficial effect comprise that：1) had by the gate lock flow that the method for the present invention is calculated higher
Precision；2) the method for the present invention is with the increase of measured data, and the parameter that calibration obtains can be more accurate, with the method for the present invention model
The flow acquired also can be more accurate；3) model of the present invention is simple, is easy to Project Realization.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing：
Fig. 1 is the method flow diagram of the embodiment of the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to limit
The fixed present invention.
As shown in Figure 1, a kind of homostrobe flow rating method of open channel canal for water conveyance, including one section of open channel canal for water conveyance,
Channel is equipped with gate, and this approach includes the following steps：
1) measuring apparatus is used to collect the related actual measurement of the corresponding gatage and head difference of overcurrent flow of gate
Data；The measured data includes lock flow, gatage and the corresponding upstream and downstream head difference of gate；
2) data on flows in measured data is compared with gatage, acquires ratio Q/e, wherein Q is the gate of acquisition
Overcurrent data on flows；E is corresponding gatage data；
3) certain lock flow and the corresponding upstream and downstream head difference DELTA z of gatage are acquired by the upstream and downstream depth of water；
4) flow calibration formula is established, according to measured data, with the method that mathematical regression is analyzed come A, B, C in calibration formula
Three parameters determine final CAP models；The formula is as follows：
Wherein, A, B, C are the parameter for needing calibration；
5) by actually measuring upstream and downstream head difference DELTA z and gatage e, the CAP models acquired is carried it into, are calculated
Go out corresponding lock flow Q；
6) it by water levels of upstream and downstream difference DELTA z and gatage e value in a certain range, is carried out also according to CAP models
It calculates, result of calculation tabulation obtains water levels of upstream and downstream difference DELTA z, gatage e and lock flow Q relation tables.
A kind of homostrobe flow calibration device of open channel canal for water conveyance, including：
Measured data harvester is opened for acquiring by the corresponding gate of the overcurrent flow of measuring apparatus collection gate
The related measured data of degree and head difference, the measured data include the lock flow of gate, gatage and it is corresponding on
Downstream head difference；
Parameter calibration device is used for according to measured data, with the method that mathematical regression is analyzed come A, B, C tri- in calibration formula
A parameter determines final CAP models；The formula is as follows：
Wherein, A, B, C are the parameter for needing calibration；Δ z is upstream and downstream head difference (the upstream depth of water-downstream water depth)；
Flow determining device actually measures upstream and downstream head difference DELTA z and gatage e for passing through, carries it into and ask
The CAP models obtained, calculate corresponding lock flow Q；
Flow input unit, the lock flow actually required for inputting gate；
Volume control device, for obtaining the actually required lock flow and sensor of gate according to flow input unit
Head difference brings CAP models into before and after the lock of acquisition, acquires corresponding gatage, and control command is exported to gate to control and is filled
It sets, gate is made to be adjusted to suitable aperture, to obtain accurate lock flow.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (2)
1. a kind of homostrobe flow rating method of open channel canal for water conveyance, which is characterized in that include the following steps：
1) measuring apparatus is used to collect the related data of the corresponding gatage and head difference of overcurrent flow of gate；
2) data on flows in measured data is compared with gatage, acquires ratio Q/e, wherein Q is the gate overcurrent of acquisition
Data on flows；E is corresponding gatage data；
3) certain lock flow and the corresponding upstream and downstream head difference DELTA z of gatage are acquired by the upstream and downstream depth of water；
4) flow calibration formula is established, according to measured data, the method analyzed with mathematical regression is come A, B, C in calibration formula tri-
Parameter determines final CAP models；The formula is as follows：
Wherein, A, B, C are the parameter for needing calibration；
5) by actually measuring upstream and downstream head difference DELTA z and gatage e, the CAP models acquired is carried it into, phase is calculated
The lock flow Q answered；
6) it by water levels of upstream and downstream difference DELTA z and gatage e value in a certain range, is calculated also according to CAP models,
Result of calculation is tabulated, and obtains water levels of upstream and downstream difference DELTA z, gatage e and lock flow Q relation tables.
2. a kind of homostrobe flow calibration device of open channel canal for water conveyance, which is characterized in that including：
Measured data harvester, for acquire by measuring apparatus collection gate the corresponding gatage of overcurrent flow and
The related measured data of head difference, the measured data include lock flow, gatage and the corresponding upstream and downstream of gate
Head difference；
Parameter calibration device, for according to measured data, being joined for tri- come A, B, C in calibration formula with the method that mathematical regression is analyzed
Number, determines final CAP models；The formula is as follows：
Wherein, A, B, C are the parameter for needing calibration；
Flow determining device actually measures upstream and downstream head difference DELTA z and gatage e for passing through, and carries it into and acquires
CAP models calculate corresponding lock flow Q；
Flow input unit, the lock flow actually required for inputting gate；
Volume control device, for obtaining the actually required lock flow of gate and sensor acquisition according to flow input unit
Lock before and after head difference bring CAP models into, acquire corresponding gatage, and control command is exported to gate controller, make
Gate is adjusted to suitable aperture, to obtain accurate lock flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810175872.XA CN108534843B (en) | 2018-03-02 | 2018-03-02 | Single gate flow calibration method and device for open channel water delivery channel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810175872.XA CN108534843B (en) | 2018-03-02 | 2018-03-02 | Single gate flow calibration method and device for open channel water delivery channel |
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| CN108534843A true CN108534843A (en) | 2018-09-14 |
| CN108534843B CN108534843B (en) | 2019-12-24 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109241690A (en) * | 2018-11-12 | 2019-01-18 | 扬州大学 | A kind of sluice overcurrent method of calculating flux based on CFD |
| CN110197030A (en) * | 2019-05-29 | 2019-09-03 | 中国水利水电科学研究院 | A kind of check gate floods the regulation method flowed out |
| CN112301962A (en) * | 2020-10-21 | 2021-02-02 | 长江勘测规划设计研究有限责任公司 | Method for improving flow capacity of large diversion project without affecting normal water supply |
| CN113343595A (en) * | 2021-05-21 | 2021-09-03 | 武汉大学 | Inversion model of open channel water delivery system accident and method for determining accident flow and position |
| CN113642081A (en) * | 2021-08-23 | 2021-11-12 | 武汉量水科技有限公司 | Calibration method for simple gate water measurement |
| CN113739879A (en) * | 2021-10-14 | 2021-12-03 | 四创科技有限公司 | Method and terminal for determining water measuring rate of open channel |
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| CN1530638A (en) * | 2003-03-13 | 2004-09-22 | 山东农业大学 | Method and device for monitornig and accumulating continuous uniform flow in open channel |
| JP2005326330A (en) * | 2004-05-17 | 2005-11-24 | Toyo Kensa Kogyo Kk | Automatic flow rate measuring device and automatic flow rate measuring method of sending/distributing water pipe |
| JP2009216712A (en) * | 2009-05-12 | 2009-09-24 | Panasonic Corp | Flow measuring device and flow measuring method |
| CN102393228A (en) * | 2011-09-24 | 2012-03-28 | 福建四创软件有限公司 | Application method based on hydraulics principle capable of ascertaining real-time lockage flow |
| CN103292873A (en) * | 2013-05-28 | 2013-09-11 | 广东省水利水电科学研究院 | Water taking metering and calibrating method |
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| CN1530638A (en) * | 2003-03-13 | 2004-09-22 | 山东农业大学 | Method and device for monitornig and accumulating continuous uniform flow in open channel |
| JP2005326330A (en) * | 2004-05-17 | 2005-11-24 | Toyo Kensa Kogyo Kk | Automatic flow rate measuring device and automatic flow rate measuring method of sending/distributing water pipe |
| JP2009216712A (en) * | 2009-05-12 | 2009-09-24 | Panasonic Corp | Flow measuring device and flow measuring method |
| CN102393228A (en) * | 2011-09-24 | 2012-03-28 | 福建四创软件有限公司 | Application method based on hydraulics principle capable of ascertaining real-time lockage flow |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109241690A (en) * | 2018-11-12 | 2019-01-18 | 扬州大学 | A kind of sluice overcurrent method of calculating flux based on CFD |
| CN110197030A (en) * | 2019-05-29 | 2019-09-03 | 中国水利水电科学研究院 | A kind of check gate floods the regulation method flowed out |
| CN112301962A (en) * | 2020-10-21 | 2021-02-02 | 长江勘测规划设计研究有限责任公司 | Method for improving flow capacity of large diversion project without affecting normal water supply |
| CN113343595A (en) * | 2021-05-21 | 2021-09-03 | 武汉大学 | Inversion model of open channel water delivery system accident and method for determining accident flow and position |
| CN113642081A (en) * | 2021-08-23 | 2021-11-12 | 武汉量水科技有限公司 | Calibration method for simple gate water measurement |
| CN113739879A (en) * | 2021-10-14 | 2021-12-03 | 四创科技有限公司 | Method and terminal for determining water measuring rate of open channel |
| CN113739879B (en) * | 2021-10-14 | 2024-03-26 | 四创科技有限公司 | Method and terminal for measuring water rate of open channel |
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| CN108534843B (en) | 2019-12-24 |
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