CN102901537A - Method and device for measuring flow of gate - Google Patents

Method and device for measuring flow of gate Download PDF

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Publication number
CN102901537A
CN102901537A CN2012104355329A CN201210435532A CN102901537A CN 102901537 A CN102901537 A CN 102901537A CN 2012104355329 A CN2012104355329 A CN 2012104355329A CN 201210435532 A CN201210435532 A CN 201210435532A CN 102901537 A CN102901537 A CN 102901537A
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China
Prior art keywords
flow
gate
surveying device
velocity
current surveying
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Pending
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CN2012104355329A
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Chinese (zh)
Inventor
张喜
马月坤
苏立业
许卓宁
于树利
刘峰
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Tangshan Modern Industry Control Technology Co Ltd
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Tangshan Modern Industry Control Technology Co Ltd
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Priority to CN2012104355329A priority Critical patent/CN102901537A/en
Publication of CN102901537A publication Critical patent/CN102901537A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a method and a device for measuring flow of a gate, belonging to the technical field of flow measurement and data remote transmission of water conservancy gates. The technical scheme provided by the invention is as follows: a velocity field with non-uniform gateways is horizontally partitioned by utilizing a horizontal partitioning method; the relationship between average flow velocity and the flow velocity of a measurement point of a horizontal flow layer is found out by utilizing symmetrical characteristic of the velocity field after horizontally partitioning; the horizontal partition flow is obtained by utilizing a flow velocity-area method; the total number of the practical horizontal partition layers is obtained by utilizing a water-level sensor; and the horizontal partition flows are added to obtain flow passing through the gate. All are linked with one another; none is dispensable; the method and the device have the advantages of smart conception, rigorous design, simple structure, low cost, high measurement precision, simplicity and practicability; the device is capable of completing measurement of average flow of various flow layers; the flow can be precisely calculated by utilizing the flow velocity-area method; data acquisition, data calculation, data recording and data transmission can be completed through an intelligent circuit; the maintenance amount is low; continuous online measurement is realized; the flow is calculated in high precision; and the method and the method are convenient for administrative departments to manage.

Description

A kind of gate flow measurement method and device
Technical field
The present invention relates to a kind of gate flow measurement method and device, belong to water conservancy gate flow measurement and transmission technology field.
Background technology
At present, existing water conservancy gate flow-measuring method adopts different computing formula by four kinds of different fluidised forms: namely: without the lock undercurrent, without the lock Free-flow, the lock undercurrent is arranged, the lock Free-flow is arranged, utilize these four kinds of fluidised form formula to calculate lock flows and have following defective: 1. level sensor behind lock level sensor and the lock front brake must be installed, expense is high, and is difficult in maintenance; 2. flow measurement precision is low, and general error is more than 15%.Defects perplexs the tradesman for a long time, but does not have again for many years better solution, has limited to a certain extent the application of gate flow measuring.
Summary of the invention
The object of the invention provides a kind of gate flow measurement method and device, realizes utilizing the lockage flow velocity that the high precision computation lock flow solves the problems referred to above that exist in the background technology.
Technical scheme of the present invention is:
A kind of gate current surveying device, comprise shell, a plurality of flow sensor and level sensor, the profile of shell is elongate in shape, vertical ground is arranged on the lock road sidewall, a plurality of flow sensors are arranged at the interval on shell, the arranged direction of a plurality of flow sensors is perpendicular to ground, and level sensor is arranged on the bottom of shell.
Interval between described a plurality of flow sensor equates or does not wait.The bottom mating of shell has constant-current stabilizer.
Flow velocity and the water level signal of flow sensor and level sensor output are connected to smart circuit and process.
Described flow sensor quantity is at least one, and the type of flow sensor can be one of mechanical type, differential pressure type, supersonic Doppler formula, ultrasound wave time difference type, electromagnetic type, eddy currents or combination.
The type of described level sensor can be that pressure, ultrasound wave, float, magnetic hysteresis are flexible, one of electric capacity, vibratory string level sensor or combination.
A kind of gate flow measurement method is installed above-mentioned gate current surveying device in the lock road of water conservancy gate, and measuring process is as follows:
1. first the lockage flowing water section behind the gate is pressed a plurality of flow sensors interval of gate current surveying device, level is divided into a plurality of fluid layers, measure the mean flow rate of certain horizontal fluid layer, and measure the flow velocity of this horizontal fluid layer measuring point, thereby obtain the relation of mean flow rate and point velocity;
2. because lock road width is known, the flow sensor interval of each horizontal fluid layer is known, the area of this horizontal fluid layer after the level that can obtain is cut apart.
3. because the relation of the mean flow rate of each fluid layer and point velocity is known, the water delivery area of each fluid layer is known, by velocity-area method, can calculate the flow of each fluid layer;
4. pass through the level sensor of gate current surveying device bottom, how many flow sensors whole current surveying device has in the water delivery section as can be known, namely whole water delivery section comprises the How much water stratosphere as can be known, and the flow addition of whole horizontal fluid layers that the water delivery section is comprised obtains actual lock flow.
Described gate current surveying device can be installed in the upstream of gate or downstream or the lock road or on the lock road wall.
Adopt the present invention, can measure flow velocity and flow in each interval, all the flow additions with in each interval obtain the flow on this section, upload measurement data to administrative authority by the GPRS wireless public network, finish automatic measurement task.
The present invention also is applicable to the flow measurement of rectangular canal.Among the present invention, the sensor of flow sensor, water level and velocity-area method are known contents.
The present invention utilizes horizontal split plot design, the velocity field level that the lock road is inhomogeneous is cut apart, the relation of this horizontal fluid layer mean flow rate and point velocity after utilizing level to cut apart, utilize velocity-area method to obtain level and cut apart flow, utilize level sensor to obtain the sum of real standard separate layer, level is cut apart the flow addition obtain lock flow.All linked with one another, indispensable, exquisite composition designs rigorous.Consequently design a simple in structurely, cheap, measuring accuracy is high, simple and practical lock flow measuring equipment.
Described gate current surveying device also is applicable to the flow measurement of rectangular canal.
Beneficial effect of the present invention: the mean flow rate that can finish each fluid layer is measured; But utilize velocity_area method accurate Calculation outflow; But smart circuit data acquisition, data calculating, data recording, data transmission; Maintenance is little; The present invention realizes continuous on-line measurement, and the high precision computation flow is convenient to administrative authority's management.
Description of drawings
Fig. 1 is embodiment of the invention synoptic diagram;
Fig. 2 is embodiment of the invention schematic top plan view;
Fig. 3 is embodiment of the invention current surveying device synoptic diagram;
Among the figure: gate 1, lock road 2, shell 3, flow sensor 4, level sensor 5, gate lifting screw 6.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described by embodiment.
A kind of gate current surveying device, comprise shell 3, a plurality of flow sensor 4 and level sensor 5, the profile of shell is elongate in shape, vertical ground is arranged on lock road 2 sidewalls, a plurality of flow sensors are arranged at the interval on shell, the arranged direction of a plurality of flow sensors is perpendicular to ground, and level sensor is arranged on the bottom of shell.
Interval between described a plurality of flow sensor equates or does not wait.The bottom mating of shell has constant-current stabilizer.Flow velocity and the water level signal of flow sensor and level sensor output are connected to smart circuit and process.
A kind of gate flow measurement method is installed above-mentioned gate current surveying device in the lock road of water conservancy gate, and measuring process is as follows:
1. first the lockage flowing water section behind the gate is pressed a plurality of flow sensors 4 intervals of gate current surveying device, level is divided into a plurality of fluid layers, measure the mean flow rate of certain horizontal fluid layer, and measure the flow velocity of this horizontal fluid layer measuring point, thereby obtain the relation of mean flow rate and point velocity;
2. because lock road width is known, the flow sensor interval of each horizontal fluid layer is known, the area of this horizontal fluid layer after the level that can obtain is cut apart.
3. because the relation of the mean flow rate of each fluid layer and point velocity is known, the water delivery area of each fluid layer is known, by velocity-area method, can calculate the flow of each fluid layer;
4. pass through the level sensor 5 of gate current surveying device bottom, how many flow sensors whole current surveying device has in the water delivery section as can be known, namely whole water delivery section comprises the How much water stratosphere as can be known, and the flow addition of whole horizontal fluid layers that the water delivery section is comprised obtains actual lock flow.
Described gate current surveying device can be installed in the upstream of gate or downstream or the lock road or on the lock road wall.
Adopt the present invention, can measure flow velocity and flow in each interval, all the flow additions with in each interval obtain the flow on this section, upload measurement data to administrative authority by the GPRS wireless public network, finish automatic measurement task.

Claims (10)

1. gate current surveying device, it is characterized in that: comprise shell (3), a plurality of flow sensor (4) and level sensor (5), the profile of shell is elongate in shape, vertical ground is arranged on lock road (2) sidewall, a plurality of flow sensors are arranged at the interval on shell, the arranged direction of a plurality of flow sensors is perpendicular to ground, and level sensor is arranged on the bottom of shell.
2. described gate current surveying device according to claim 1, it is characterized in that: the interval between described a plurality of flow sensors equates or does not wait.
3. described gate current surveying device according to claim 1 and 2, it is characterized in that: the bottom mating of shell has constant-current stabilizer.
4. described gate current surveying device according to claim 1 and 2 is characterized in that being connected to flow velocity and the water level signal of the output of flow sensor and level sensor smart circuit and processing.
5. described gate current surveying device according to claim 1 and 2, it is characterized in that: described flow sensor quantity is at least one, and the type of flow sensor can be one of mechanical type, differential pressure type, supersonic Doppler formula, ultrasound wave time difference type, electromagnetic type, eddy currents or combination.
6. described gate current surveying device according to claim 1 and 2 is characterized in that: the type of described level sensor can be that pressure, ultrasound wave, float, magnetic hysteresis are flexible, one of electric capacity, vibratory string level sensor or combination.
7. a gate flow measurement method is characterized in that in the lock road of water conservancy gate the gate current surveying device that claim 1 limits being installed, and measuring process is as follows:
1. first the lockage flowing water section behind the gate is pressed a plurality of flow sensors (4) interval of gate current surveying device, level is divided into a plurality of fluid layers, measure the mean flow rate of certain horizontal fluid layer, and measure the flow velocity of this horizontal fluid layer measuring point, thereby obtain the relation of mean flow rate and point velocity;
2. because lock road width is known, the flow sensor interval of each horizontal fluid layer is known, the area of this horizontal fluid layer after the level that can obtain is cut apart;
3. because the relation of the mean flow rate of each fluid layer and point velocity is known, the water delivery area of each fluid layer is known, by velocity-area method, can calculate the flow of each fluid layer;
4. pass through the level sensor (5) of gate current surveying device bottom, how many flow sensors whole current surveying device has in the water delivery section as can be known, namely whole water delivery section comprises the How much water stratosphere as can be known, and the flow addition of whole horizontal fluid layers that the water delivery section is comprised obtains actual lock flow.
8. described a kind of gate flow measurement method according to claim 7 is characterized in that: described gate current surveying device is installed in the upstream of gate or downstream or the lock road or on the lock road wall.
9. described a kind of gate flow measurement method according to claim 7, it is characterized in that: measure flow velocity and flow in each interval, all the flow additions with in each interval obtain the flow on this section, upload measurement data to administrative authority by the GPRS wireless public network, finish automatic measurement task.
10. described a kind of gate flow measurement method according to claim 7, it is characterized in that: described gate current surveying device also is applicable to the flow measurement of rectangular canal.
CN2012104355329A 2012-11-05 2012-11-05 Method and device for measuring flow of gate Pending CN102901537A (en)

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Application Number Priority Date Filing Date Title
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Cited By (7)

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Publication number Priority date Publication date Assignee Title
CN103940475A (en) * 2014-05-12 2014-07-23 唐山现代工控技术有限公司 Doppler gate flow measurement method and device
CN105625284A (en) * 2016-03-25 2016-06-01 山东省水利科学研究院 Valve control and flow measuring device
CN107490418A (en) * 2017-08-09 2017-12-19 张家春 A kind of water project management intelligent device for measuring
CN108759947A (en) * 2018-08-23 2018-11-06 苏州东剑智能科技有限公司 A kind of discontented metering ultrasonic flowmeter of plug-in type
CN108775936A (en) * 2018-03-23 2018-11-09 中国航天系统科学与工程研究院 A kind of flow measurement device, metering method and measurement and control integration gate system
CN110018323A (en) * 2019-04-24 2019-07-16 杭州开闳流体科技有限公司 A kind of flow field intelligence computation method and system based on acoustic Doppler measurement instrument
CN111693102A (en) * 2019-03-12 2020-09-22 四川亚润科技有限公司 Flow automatic processing terminal intelligent flow metering method based on natural section

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CN102636663A (en) * 2012-04-28 2012-08-15 唐山现代工控技术有限公司 Method for measuring flow rate of channel by utilizing bubbles and portable bubble flow rate instrument
CN202885872U (en) * 2012-11-05 2013-04-17 唐山现代工控技术有限公司 Gate flow measuring device

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103940475A (en) * 2014-05-12 2014-07-23 唐山现代工控技术有限公司 Doppler gate flow measurement method and device
CN105625284A (en) * 2016-03-25 2016-06-01 山东省水利科学研究院 Valve control and flow measuring device
CN107490418A (en) * 2017-08-09 2017-12-19 张家春 A kind of water project management intelligent device for measuring
CN107490418B (en) * 2017-08-09 2019-08-09 张家春 A kind of water project management intelligent device for measuring
CN108775936A (en) * 2018-03-23 2018-11-09 中国航天系统科学与工程研究院 A kind of flow measurement device, metering method and measurement and control integration gate system
CN108759947A (en) * 2018-08-23 2018-11-06 苏州东剑智能科技有限公司 A kind of discontented metering ultrasonic flowmeter of plug-in type
CN111693102A (en) * 2019-03-12 2020-09-22 四川亚润科技有限公司 Flow automatic processing terminal intelligent flow metering method based on natural section
CN110018323A (en) * 2019-04-24 2019-07-16 杭州开闳流体科技有限公司 A kind of flow field intelligence computation method and system based on acoustic Doppler measurement instrument
WO2020215458A1 (en) * 2019-04-24 2020-10-29 杭州开闳流体科技有限公司 Intelligent flow-field calculation method and system employing acoustic doppler current profiler

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Application publication date: 20130130