CN108680237A - A kind of multifunction test platform and its test method - Google Patents

A kind of multifunction test platform and its test method Download PDF

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Publication number
CN108680237A
CN108680237A CN201810292773.XA CN201810292773A CN108680237A CN 108680237 A CN108680237 A CN 108680237A CN 201810292773 A CN201810292773 A CN 201810292773A CN 108680237 A CN108680237 A CN 108680237A
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CN
China
Prior art keywords
calibration
flowmeter
weir
flume
cistern
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Pending
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CN201810292773.XA
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Chinese (zh)
Inventor
陈德莉
吴秋明
毛小波
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Wuxi Aviation Sign Technology Co Ltd
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Wuxi Aviation Sign Technology Co Ltd
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Priority to CN201810292773.XA priority Critical patent/CN108680237A/en
Publication of CN108680237A publication Critical patent/CN108680237A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F25/00Testing or calibrating apparatus for measuring volume, volume flow or liquid level, or for metering by volume
    • G01F25/0007Testing or calibrating apparatus for measuring volume, volume flow or liquid level, or for metering by volume for measuring volume flow

Abstract

The present invention discloses a kind of multifunction test platform, including the open channel circulatory system and non-full pipe drainage system, water is pumped into cistern by the open channel circulatory system by water pump from back pool, flow enters discharge bay by steady waterwall, dovetail groove test section is entered by open channel system rectangular weir again, back pool is flowed into finally by return flume;The non-full pipe pipe drainage circulatory system is pumped water to cistern from back pool by water pump, enters discharge bay by steady waterwall, then enter duct test section by discharge cycle system rectangular weir, and back pool is flowed into finally by return flume.Water pump open frequency is arranged in its test method, on-test;Calibration and calibration are carried out to radar flowmeter;Radar flow meter parameter is set and changed, calibration and calibration of the current class to radar flowmeter are completed;Verify gradient area-method flowmeter calculation formula accuracy;Control rectangle weir aperture realizes gate measurement and control integration.With structure dexterity, feature vdiverse in function.

Description

A kind of multifunction test platform and its test method
Technical field:
The invention belongs to open channel and pipe-line equipment technical field, it is related to a kind of comprehensive test platform and its to contactless Radar flowmeter calibration and calibration method.
Background technology:
Domestic and international contactless radar flowmeter at present, starts to be widely used in water conservancy, the hydrology and drainage pipeline networks, external Contactless radar flowmeter is early relative to country's starting, and the country independent research affiliated brand just occurs in the recent period.Relative to connecing Touch flow monitoring equipment has many advantages, such as that non-maintaining, construction is convenient, is increasingly favored by owner, but its test value Up to the present no matter accuracy to foreign brand name or home brands, all lacks effective measuring equipment and its corresponding side Case is to its calibration and calibration.Rotor current meter or walking type ADCP are mainly used at present, in open channel or natural river course open air to it When carrying out calibration and calibration, water level, which accurately can not set and adjust, flow can not also be precisely controlled, take, precision is not high lacks It falls into.In view of this, the solution that a kind of experimental tank carries out contactless radar flowmeter calibration and calibration how is designed, It is a current problem urgently to be resolved hurrily.
In addition it in agricultural water management, measures water technology and is important a ring.Flow meter, gate, in water consumption measurement Automatic technology is widely used, but the two is run as seperated equipment, and the two is realized connecting move control, realizes science With the underlying hardware of the water necessarily following irrigated area science and technology amount water and the developing direction and Irrigated area Informationization management of management of the use of water, and The inevitable requirement in structure modernization irrigated area.Therefore, gate measurement and control integration, and a current problem urgently to be resolved hurrily are realized.
Invention content:
The present invention is directed to overcome the deficiencies of existing technologies, a kind of multifunction test platform and its test method are provided, to thunder Calibration and calibration are carried out up to flowmeter and by radar flowmeter regulating gate aperture, realize and water is surveyed to open channel, drainage pipeline networks Gate measurement and control integration controls.It is vdiverse in function with structure dexterity, there is important practical value and promotes the use foreground.It can be same When calibration is carried out to the discharge coefficient of rectangular weir and is calibrated and verification gradient area-method flow rate calculation accuracy.
In order to solve the above technical problem, the present invention provides following technical schemes:A kind of multifunction test platform, including it is bright The canal circulatory system and non-full pipe discharge cycle system, the open channel circulatory system, including back pool 1, outlet sluice 22, water pump 25, Return pipe 2, electromagnetic flowmeter 24, moisturizing gate 23, cistern 19, steady waterwall 21, discharge bay 20, total return flume 3, return flume 4, Trapezoidal flume 7, rectangular weir 1, diversion rectangular channel 1, indicator water gage 1,1 bottom of back pool are equipped with outlet sluice 22 And water pump 25, return pipe 2 is connected on every water pump 25, the connection of return pipe 2 is passed through cistern 19;19 bottom of cistern is equipped with Moisturizing lock 23, cistern 23 are equipped with layer water-stabilizing board 26, are connected by steady waterwall 21 between cistern 19 and discharge bay 20;Water outlet Pond 20 is equipped with gate 1 far from cistern side, and gate 1 is set to one 13 front end of diversion rectangular channel, diversion rectangular channel Indicator water gage 1 is installed, one 13 end of diversion rectangular channel is connect by rectangular weir 1 with trapezoidal flume 7, ladder on one 13 7 end of shape sink is connect with return flume 4;4 end of return flume is connect with total return flume 3, and junction is equipped with drop, total return flume 3 It is connected with back pool 1, the gradient 1/1000;
Non-full pipe discharge cycle system, including back pool 1, outlet sluice 22, water pump 25, return pipe 2, electromagnetic flowmeter 24, Moisturizing gate 23, cistern 19, steady waterwall 21, discharge bay 20, diversion rectangular channel 2 16, indicator water gage 2 14, rectangular weir two 12, pipe 8, return flume 4, total return flume 3, discharge bay 20 are equipped with gate 2 18 far from cistern side, gate 2 18 with draw Water rectangular channel 2 16 is fixedly connected, and diversion rectangular channel 2 16 is equipped with indicator water gage 2 14;2 16 end of diversion rectangular channel is logical It crosses rectangular weir 2 12 to connect with pipe 8,8 end of pipe is connect with return flume 4;4 end of return flume is connect with total return flume 3, always Return flume 3 is connected with back pool 1.
Preferably, cistern 19 is equipped with two layers of water-stabilizing board 26, and it is disorderly to cut down aquosity in cistern.
Preferably, electromagnetic flowmeter 24 is installed in return pipe 2.
Preferably, rectification section 1 is arranged in dovetail groove 7, and two rectification sections 10 are arranged in pipe 8.
Preferably, it is placed with the radar flowmeter 1 by 24 calibration of electromagnetic flowmeter and calibration in dovetail groove 7.
Preferably, it is equipped with the radar flowmeter 26 by 24 calibration of electromagnetic flowmeter and calibration in pipe 8.
Preferably, 4 gradient of return flume is 0, and dovetail groove 7 and 8 gradient of pipe are 1/1000.
A kind of test method of multifunction test platform, includes the following steps,
(1) on-test, opens the gate one (17) on corresponding diversion rectangular channel one (13);
(2) according to experiment class flow, setting frequency opens water pump (25);
(3) rectangular weir one (11) head is monitored by indicator water gage one (15) in real time, waits for that head is stablized, you can to radar Flowmeter (5) carries out calibration and calibration;
(4) it compares electromagnetic flowmeter (24) and reads Q and radar flowmeter one (5) reading Q1, to radar flowmeter one (5) Parameter is set and is changed, and Q and Q are made1Unanimously, or within 2%, then current class is completed to radar flowmeter one (5) Calibration and calibration;
(5) 4~5 are repeated, the other two class flow calibration in one (5) of radar flowmeter and calibration are completed;
(6) in radar flowmeter calibration and calibration process, rectangular weir one (11) forms weir head H, according to formula The flow in the circulatory system can be acquired:
In formula:Q2For flow, m0For discharge coefficient, B is overflow width, and g is acceleration of gravity, and H is weir head, and a is weir It is high;The weir flow of formation is free discharge and receives place without side;
(7) Q and Q is read by comparing electromagnetic flowmeter (24)2Rectangular weir flow prediction equation can be calibrated;
(8) according to gradient area-method, the flow Q in the circulatory system is acquired3
Wherein:N is Manning coefficient, and R is hydraulic radius, SfFor upstream and downstream water surface slope,
A is discharge section area;
(9) by comparing Q and Q3, verify gradient area-method flowmeter calculation formula accuracy;
(10) after to being mounted on radar flowmeter one (5) calibration on trapezoidal flume (7) and calibrating, pass through and set radar Flowmeter one (5) flow, control rectangle weir (11) aperture realize gate measurement and control integration.
Compared with prior art, the present invention has following advantageous effect:
The present invention has structure dexterity, vdiverse in function, has important practical value and promotes the use foreground.It can be simultaneously to square The discharge coefficient on shape weir carries out calibration and calibrates and verify gradient area-method flow rate calculation accuracy.
Description of the drawings
Fig. 1 is the planar structure schematic diagram of multifunction test platform of the present invention;
Fig. 2 be in Fig. 1 A-A to sectional view.
Specific implementation mode
In order to preferably illustrate that this practicality is invented, it is described in detail below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, a kind of multifunction test platform, including the open channel circulatory system and non-full pipe discharge cycle system System, the open channel circulatory system, including back pool 1, outlet sluice 22, water pump 25, return pipe 2, electromagnetic flowmeter 24, moisturizing gate 23, cistern 19, steady waterwall 21, discharge bay 20, diversion rectangular channel 1, indicator water gage 1, rectangular weir 1, rectification section 9, trapezoidal flume 7, radar flowmeter 1, return flume 4, total return flume 3,1 bottom of back pool are equipped with outlet sluice 22 and 2 water Pump 25, water pump are submerged axial-flow water pump, and every water pump 25 configures frequency converter and is connected with return pipe 2, and electricity is equipped in return pipe 2 Magnetic flowmeter 24, the connection of return pipe 2 are passed through cistern 19, and 19 bottom of cistern is equipped with moisturizing gate 23, in, top is equipped with It is disorderly to cut down aquosity in cistern by two layers of water-stabilizing board 26.It is connected by steady waterwall 21 between cistern 19 and discharge bay 20;Water outlet Pond 20 is equipped with gate 1, gate 2 18 far from cistern side, and gate 1 is set to one 13 front end of diversion rectangular channel, draws Indicator water gage 1 is installed, gate 2 18 is fixedly connected with gutter 16 on water rectangular channel 1;It is installed on gutter 13 There are indicator water gage 1,13 end of diversion rectangular channel to be connect with trapezoidal flume 7 by rectangular weir 11, is placed in trapezoidal flume 7 There are the radar flowmeter 5 by 24 calibration of electromagnetic flowmeter and calibration, dovetail groove 7 that rectification section 1 is set, flow is carried out whole Stream.Gutter 2 16 is equipped with indicator water gage 2 14, and 2 16 end of gutter is connect by rectangular weir 2 12 with pipe 8, Pipe 8 is equipped with the radar flowmeter 6 by 24 calibration of electromagnetic flowmeter and calibration.Rectification section 2 10 is arranged in pipe 8, is flowed into water Row rectification.Dovetail groove 7 and 8 gradient of pipe are 1/1000, and 7 end of dovetail groove is connect with return flume 4;8 end of pipe and return water Slot 4 connects;4 gradient of return flume is 0, and 4 end of return flume is connect with total return flume 3, and junction is equipped with drop;Total return flume 3 with Back pool 1 is connected, the gradient 1/1000.
Back pool 1, outlet sluice 22, water pump 25, return pipe 2, electromagnetic flowmeter 24, moisturizing gate 23, cistern 19, steady water Wall 21, discharge bay 20, diversion rectangular channel 2 16, indicator water gage 2 14, rectangular weir 2 12, rectification section 2 10, pipe 8, radar Flowmeter 26, return flume 4, total return flume 3 constitute non-full pipe discharge cycle system.
Embodiment 1
When being tested as open channel, gate 1 is opened, water pump 25 is opened and respective frequencies is set, pass through indicator water gage one 15 monitoring rectangular weir heads compare electromagnetic flowmeter 24 and radar flowmeter 5, are divided into basic, normal, high third gear after head is stablized Secondary calibration.It is consistent with open channel radar flowmeter calibration and calibration flow that non-full pipe drains radar flowmeter calibration and calibration.
Embodiment 2
Open channel dovetail groove radar flowmeter calibration and calibration after, monitor dovetail groove in flow, while with gate 1 Between communicate, give gate 17 control system flow real-time Transmission, 17 control system of gate compares 5 flow of radar flowmeter and sets Constant flow, carrys out 17 aperture of regulating gate, and a whole set of control system is closed-loop control.
Operation principle:
It uses when two sets of circulatory system differences, is illustrated so that dovetail groove is tested as an example.Duct test slot is same.It is right Contactless radar flowmeter calibration and calibration or calibration, point basic, normal, high three class rate of discharge determines and calibration, and water pump is arranged Different frequency obtains corresponding class flow.The rectangular weir head in rectangular test slot is constantly measured by indicator water gage, waits for it After water level value stabilization, electromagnetic flowmeter flow Q and radar flow Q is compared1, according to comparison result, radar flowmeter is accordingly joined Number is modified and is set, then completes the class flow to radar flowmeter calibration and calibration.By this step, complete two grades remaining Secondary radar flowmeter calibration and calibration, then complete radar flowmeter calibration and calibration.
After radar flowmeter calibration and calibration are completed, by being communicated before both radar flowmeter and gate, pass through Radar flowmeter monitors flow, and regulating gate aperture realizes gate measurement and control integration.
While to radar flowmeter calibration and calibration, using rectangular weir weir flow calculation formula and gradient area-method flow Calculation formula does corresponding flow rate test experiment.
Open channel system rectangular weir and sewerage pipeline network rectangular weir front end are respectively provided with gutter 13,16, and diversion front of the slot is each From setting gate 17,18, it is ensured that the independent separately operation of two systems.Indicator water is arranged in two rectangular weirs 11,12 head front ends Meter 14,15, monitors water level in real time.Radar flowmeter 5,6, monitoring stream are placed right over 7 test section of dovetail groove, 8 test section of pipeline Amount.For two sets of circulatory systems except gutter, gate, rectangular weir, itself experimental section, other parts are that two sets of circulatory systems share, two It is used when covering experimental system difference.By taking 5 calibration of radar flowmeter and calibration as an example, rectangle is monitored using indicator water gage 15 in real time 11 head of weir, it is ensured that calibration and calibration are carried out to radar flowmeter in the case of fluid stable.After head is stablized, pass through comparison Radar flowmeter flow Q on electromagnetic flowmeter flow Q and experimental section1, radar flowmeter K values are adjusted, radar flowmeter is carried out Calibration and calibration so that Q and Q1Consistent or error is within 2%.Two submersible axial flow pumps are placed in back pool matches upconverter, According to demand by the way that different frequency is arranged, obtain basic, normal, high three different class flows, radar flowmeter is carried out respectively it is low, Middle and high three class flow calibrations and calibration.The test platform can be simultaneously to the flow of rectangular weir in addition to above-mentioned two functions Coefficient carries out calibration and calibrates and verify gradient area-method flow rate calculation accuracy.
It the foregoing is merely embodiments of the present invention are illustrated, is not intended to restrict the invention, for the technology of this field For personnel, all within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in Within protection scope of the present invention.

Claims (8)

1. a kind of multifunction test platform, including the open channel circulatory system and non-full pipe discharge cycle system, it is characterised in that:It is described The open channel circulatory system, including back pool (1), outlet sluice (22), water pump (25), return pipe (2), electromagnetic flowmeter (24), moisturizing Gate (23), cistern (19), steady waterwall (21), discharge bay (20), total return flume (3), return flume (4), trapezoidal flume (7), Rectangular weir one (11), diversion rectangular channel one (13), indicator water gage one (15), back pool (1) bottom are equipped with outlet sluice (22) And water pump (25), return pipe (2) is installed, return pipe (2) connection is passed through cistern (19) on every water pump (25);Cistern (19) bottom is equipped with moisturizing lock (23), and cistern (19) is equipped with a layer water-stabilizing board (26), cistern (19) and discharge bay (20) Between pass through steady waterwall (21) connect;Discharge bay (20) is equipped with gate one (17) far from cistern side, and gate one (17) is set It is placed in diversion rectangular channel one (13) front end, indicator water gage one (15), diversion rectangular channel are installed on diversion rectangular channel one (13) One (13) end is connect by rectangular weir one (11) with trapezoidal flume (7), and trapezoidal flume (7) end is connect with return flume (4);It returns Sink (4) end is connect with total return flume (3), and junction is equipped with drop, and total return flume (3) is connected with back pool (1), the gradient It is 1/1000;
Non-full pipe discharge cycle system, including back pool (1), outlet sluice (22), water pump (25), return pipe (2), electromagnetic flowmeter (24), moisturizing gate (23), cistern (19), steady waterwall (21), discharge bay (20), diversion rectangular channel two (16), indicator water Two (14), rectangular weir two (12), pipe (8), return flume (4), total return flume (3) are counted, discharge bay (20) is far from cistern side Gate two (18) is installed, gate two (18) is fixedly connected with diversion rectangular channel two (16), and diversion rectangular channel two (16) is equipped with Indicator water gage two (14);Diversion rectangular channel two (16) end is connect by rectangular weir two (12) with pipe (8), pipe (8) end End is connect with return flume (4);Return flume (4) end is connect with total return flume (3), and total return flume (3) is connected with back pool (1) It connects.
2. a kind of multifunction test platform according to claim 1, it is characterised in that:Cistern (19) is equipped with two layers of water-stabilizing board (26), it is disorderly to cut down aquosity in cistern.
3. a kind of multifunction test platform according to claim 1, it is characterised in that:Electromagnetic current is installed in return pipe (2) Gauge (24).
4. a kind of multifunction test platform according to claim 1, it is characterised in that:Rectification section one is arranged in trapezoidal flume (7) (9), pipe (8) setting rectification section two (10).
5. a kind of multifunction test platform according to claim 1, it is characterised in that:It is placed with and passes through in trapezoidal flume (7) The radar flowmeter one (5) of electromagnetic flowmeter (24) calibration and calibration.
6. a kind of multifunction test platform according to claim 1, it is characterised in that:It is equipped in pipe (8) and passes through electromagnetic current The radar flowmeter two (6) of gauge (24) calibration and calibration.
7. a kind of multifunction test platform according to claim 1, it is characterised in that:Return flume (4) gradient is 0, trapezoidal water Slot (7) and pipe (8) gradient are 1/1000.
8. according to the test method of any one multifunction test platform of claim 1-6, it is characterised in that:Including following step Suddenly,
(1) on-test, opens the gate one (17) on corresponding diversion rectangular channel one (13);
(2) according to experiment class flow, setting frequency opens water pump (25);
(3) rectangular weir one (11) head is monitored by indicator water gage one (15) in real time, waits for that head is stablized, you can to radar flow It counts one (5) and carries out calibration and calibration;
(4) it compares electromagnetic flowmeter (24) and reads Q and radar flowmeter one (5) reading Q1, radar flowmeter (24) parameter is carried out Setting and modification, make Q and Q1Unanimously, or within 2%, then calibration and school of the current class to radar flowmeter one (5) are completed It is accurate;
(5) 4~5 are repeated, the other two class flow calibration in one (5) of radar flowmeter and calibration are completed;
(6) in radar flowmeter calibration and calibration process, rectangular weir one (11) forms weir head H, can be asked according to formula Obtain the flow in the circulatory system:
In formula:Q2For flow, m0For discharge coefficient, B is overflow width, and g is acceleration of gravity, and H is weir head, and a is that weir is high; The weir flow of formation is free discharge and receives place without side;
(7) rectangular weir flow prediction equation can be calibrated by comparing electromagnetic flowmeter (24) reading Q and Q2;
(8) according to gradient area-method, the flow Q in the circulatory system is acquired3
Wherein:N is Manning coefficient, and R is hydraulic radius, SfFor upstream and downstream water surface slope,
A is discharge section area;
(9) by comparing Q and Q3, verify gradient area-method flowmeter calculation formula accuracy;
(10) after to being mounted on radar flowmeter one (5) calibration on trapezoidal flume (7) and calibrating, pass through radar flowmeter one (5) flow, control rectangle weir (11) aperture realize gate measurement and control integration.
CN201810292773.XA 2018-03-30 2018-03-30 A kind of multifunction test platform and its test method Pending CN108680237A (en)

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CN107132023A (en) * 2017-04-29 2017-09-05 西南交通大学 Flat slope flume test system
CN107271005A (en) * 2017-06-20 2017-10-20 环境保护部华南环境科学研究所 Open-ditch sewage flowmeter calibrating/calibrating installation
CN206726034U (en) * 2017-05-27 2017-12-08 南京南瑞集团公司 Integrated gate controller
CN107705692A (en) * 2017-10-19 2018-02-16 西南交通大学 A kind of dam break circulating water chennel

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201056680Y (en) * 2007-07-20 2008-05-07 中国科学院沈阳应用生态研究所 Novel Parshall flume and rectangular weir associated current surveying device
CN102182166A (en) * 2011-03-30 2011-09-14 扬州众大水利机电设备制造有限公司 Water conservancy gate monitoring system
CN202257254U (en) * 2011-10-18 2012-05-30 任春梅 Gate monitoring device
CN203164716U (en) * 2013-03-19 2013-08-28 湖南主导科技发展有限公司 Remote intelligent monitoring and management device for reservoir-area gate group
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JP2016037781A (en) * 2014-08-08 2016-03-22 株式会社Ihi Method and device for measuring tsunami wave force
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CN106354035A (en) * 2016-08-30 2017-01-25 扬州众大水利机电设备制造有限公司 Water conservancy gate monitoring system
CN206173901U (en) * 2016-10-28 2017-05-17 唐山现代工控技术有限公司 Observe and control integrative gate
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CN107271005A (en) * 2017-06-20 2017-10-20 环境保护部华南环境科学研究所 Open-ditch sewage flowmeter calibrating/calibrating installation
CN107705692A (en) * 2017-10-19 2018-02-16 西南交通大学 A kind of dam break circulating water chennel

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