CN209264758U - A kind of ultrasonic current metre flow parameters metering and calibrating device - Google Patents
A kind of ultrasonic current metre flow parameters metering and calibrating device Download PDFInfo
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- CN209264758U CN209264758U CN201920055508.XU CN201920055508U CN209264758U CN 209264758 U CN209264758 U CN 209264758U CN 201920055508 U CN201920055508 U CN 201920055508U CN 209264758 U CN209264758 U CN 209264758U
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Abstract
The utility model relates to a kind of ultrasonic current metre flow parameters metering and calibrating devices, wherein flow velocity calibrating installation is erected on flow velocity calibration tank, track is set up above the calibrating flow velocity sink of flow velocity calibrating installation, calibrating vehicle is slidably connected with track, universal counter is fixed on calibrating vehicle, it examines and determine and two lifting measuring staffs is set under vehicle, fixed ring is arranged in first lifting measuring staff, suspended particulate agitating device is set on second lifting measuring staff, multiple blades from top to bottom are installed on the agitating shaft of suspended particulate agitating device, blade is rotatablely connected by axle sleeve and agitating shaft, angle is formed between adjacent blades.The utility model has the beneficial effects that calibrating vehicle drives ultrasonic current metre to be checked to pass through flow velocity calibration tank detection section at different rates, using grating ruler and universal counter as measurement standard, velocity amplitude is calculated as velocity standard value, it is compared with the velocity amplitude of ultrasonic current metre measurement, realize the measurement verification of ultrasonic current metre flow velocity, calibration accuracy is high, easy to operate.
Description
Technical field
The utility model belongs to a kind of ultrasonic wave of hydrographic survey instrument field of measuring techniques more particularly to marine traffic engineering field
Current meter flow parameters metering and calibrating device.
Background technique
Flow velocity is the basic parameter of determining water flow motion character istics.The measuring parameter important as one, flow velocity is for water transport
Engineering, hydrologic monitoring, environmental improvement and industrial production activities have important meaning.
In recent years, along with the continuous development of electronic technology, ultrasonic flow measurement comes into being as an emerging technology.It is super
Acoustic wave flow rate instrument is a kind of propagation characteristic using ultrasonic wave in water flow, measures single layer with one or more groups of ultrasonic transducers
Or instantaneous and mean flow rate the instrument of multilayer mean flow rate or certain measuring point.With traditional mechanical, electromagnetic type flow velocity instrument phase
Than, ultrasonic current metre have accuracy it is high, it is adaptable, without initial velocity, non-contact fluid, it is easy to use, be easy to several
Many advantages, such as wordization manages, is increasingly becoming the first-selected instrument of flow measurement.Ultrasonic current metre obtains in the various measurements of marine traffic engineering
To being widely applied, demand is larger, and the calibrating demand using unit or client is very urgent, is that water transport project is urgently carried out
The measuring device of magnitude tracing.
Currently, ultrasonic current metre in the market lacks the metering and calibrating device of unified standard, equipment be chronically at without
The state that calibrating/calibration uses seriously affects reliability, accuracy and the confidence level of ultrasonic current metre observation data, institute
There is very big hidden danger of quality in the data information of acquisition.
Utility model content
To solve the above problems, the utility model provides a kind of ultrasonic current metre flow parameters metering and calibrating device.
The technical solution of the utility model includes: a kind of ultrasonic current metre flow parameters metering and calibrating device, it is characterised in that
Including flow velocity calibration tank, flow velocity calibrating installation, suspended particulate agitating device, the flow velocity calibrating installation is erected at the flow velocity
On calibration tank；
Flow velocity calibrating installation includes universal counter, grating positioning mechanism, calibrating vehicle, track, lifting measuring staff；The calibrating
The track is set up above flow velocity sink, the calibrating vehicle is slidably connected with the track, fixes on the calibrating vehicle described logical
With counter, the universal counter connects the grating positioning mechanism, and two lifting measuring staffs of setting are distinguished under the calibrating vehicle
For the first lifting measuring staff and the second lifting measuring staff, the first lifting measuring staff is arranged for fixing consolidating for ultrasonic current metre to be measured
Determine ring, suspended particulate agitating device is set on the second lifting measuring staff.
Further, the suspended particulate agitating device includes agitating shaft and blade, on the agitating shaft installation from up to
Under multiple blades, the blade is rotatablely connected by axle sleeve and the agitating shaft, and the distance of the adjacent axle sleeve is 0.9-1.2 times
The diameter of the agitating shaft forms angle between the adjacent blade.
Further, the blade is 3, and the distance of the adjacent axle sleeve is the diameter of the agitating shaft, adjacent described
It is 60 degree that angle is formed between blade, and hollow out item, the length direction and the length of blade of the hollow out item are arranged on the blade
Direction is consistent, and blade two sides end of blade is symmetrical and opposite direction is equipped with flanged plate, and the flanged plate is with the leaf angle
35-55 degree.
Further, the length direction of the hollow out item and the length of blade direction are consistent or vertical, the flanged plate
Outer be straight line or sine curve.
Further, the flow velocity calibration tank is long 75m, wide 1.5m, the concrete water tank of deep 1.5m, the flow velocity inspection
Determine sink bottom of pond and is covered with suspension bed sediment.
Further, the length direction of the hollow out item and the length of blade direction are consistent or vertical, the flanged plate
Outer be straight line or sine curve.
Further, the track is 2 and is arranged in parallel that the track is T-steel structural rail, and the track is along institute
State the laying of flow velocity calibration tank length direction.
Further, the end of the first lifting measuring staff is located at underwater 0.2~0.6 meter.
Further, the calibrating vehicle is fixed on the track by two Slideslip of sliding equipment, the sliding equipment
Upper fixation and the calibrating vehicle.
Further, the calibrating vehicle speed range is 0.1m/s~5m/s.
Further, the universal counter connects grating positioning mechanism, the calibrating vehicle and the grating positioning mechanism
Host computer is connected, the optical position assemble further includes scale grating and grating reading head, and the scale grating is fixed on described
On parallel orbit, the grating reading head is fixed on the calibrating vehicle, and the measurement data of the grating reading head uploads respectively
To in the host computer and the universal counter.
Multiple short scale gratings are equidistantly installed, record position is believed when the calibrating vehicle passes through scale grating on the track
Breath.
The utility model beneficial effect is: setting rationally, by design current velocity calibration tank indoors, is driven by calibrating vehicle
Ultrasonic current metre to be checked passes through flow velocity calibration tank detection section at different rates, is made using scale grating and universal counter
For measurement standard, calibrating segment length is measured by scale grating, calibrating vehicle is recorded by universal counter and passes through the calibrating length institute
Reality is compared with the velocity amplitude of ultrasonic current metre measurement to calculate velocity amplitude as velocity standard value in the time needed
The measurement verification of existing ultrasonic current metre flow velocity has the advantages that calibration accuracy is high, easy-operating.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiments of the present invention 1.
Fig. 2 is the structural schematic diagram of the embodiment 1 of the suspended particulate agitating device of the utility model.
Fig. 3 is the top view of the embodiment 1 of the suspended particulate agitating device of the utility model.
Fig. 4 is the structural schematic diagram of the embodiment 1 of the sliding equipment of the utility model.
Fig. 5 is the flow velocity calibration tank zoning plan of the embodiments of the present invention 1.
Fig. 6 is the structural schematic diagram of the embodiment 2 of the suspended particulate agitating device of the utility model.
In figure: 1, flow velocity calibration tank, 2, flow velocity calibrating installation, 2-1, universal counter, 2-2, the second lifting measuring staff, 2-
3, vehicle, 2-4, track, 2-5, the first lifting measuring staff 3, host computer, 4, suspended particulate agitating device, 4-1, agitating shaft, 4- are examined and determine
2,5-3, blade, 4-3, axle sleeve, 4-4, hollow out item, 4-5, flanged plate, 5, sliding equipment, 5-1, rail wheel, 5-2, bottom plate hang down
Straight sliding rail, 5-4, adjustment sliding block, 6, ultrasonic current metre to be measured, 7, grating positioning mechanism, 7-1, scale grating, 7-2, grating
Reading head.
Specific embodiment
It explains with reference to the accompanying drawing to specific embodiment of the present utility model.
A kind of ultrasonic current metre flow parameters metering and calibrating device, including flow velocity calibration tank 1, flow velocity calibrating installation 2,
Suspended particulate agitating device 4, flow velocity calibrating installation 2 are erected on flow velocity calibration tank 1, and flow velocity calibrating installation 2 includes general meter
Number device 2-1, calibrating vehicle 2-3, track 2-4, the first lifting measuring staff 2-5, the second lifting measuring staff 2-2, examine and determine 1 top frame of flow velocity sink
If track 2-4, calibrating vehicle 2-3 and track 2-4 is slidably connected, and examines and determine and fixes universal counter 2-1 and laser ranging on vehicle 2-3
It is to be measured super for fixing to examine and determine the first lifting measuring staff of setting and the second lifting measuring staff, the first lifting measuring staff setting under vehicle by instrument 2-2
The fixed ring of acoustic wave flow rate instrument, second goes up and down setting suspended particulate agitating device on measuring staff.Fixed ring can use split ring knot
Structure can also using can opening and closing movable claw, convenient for picking and placing fixed ultrasonic current metre 6 to be measured.First lifting measuring staff 2-5, second
Lifting measuring staff 2-2 is all made of existing product, and the first lifting measuring staff 2-5 and the second lifting measuring staff 2-2 are able to achieve the production of lift adjustment
Product.Overall structure is simple, and setting rationally, by design current velocity calibration tank indoors, drives ultrasound to be checked by calibrating vehicle
Wave current meter passes through flow velocity calibration tank detection section at different rates, using scale grating and universal counter as metering mark
Quasi- device measures calibrating segment length by scale grating, records the time needed for calibrating vehicle passes through the calibrating length as universal counter,
To calculate velocity amplitude as velocity standard value, realization supersonic flow is compared with the velocity amplitude of ultrasonic current metre measurement
The measurement verification of fast instrument flow velocity has the advantages that calibration accuracy is high, easy-operating, suspended particulate agitating device, the first lifting measuring staff
It is all connected with respective power-driven mechanism with the second lifting measuring staff, power-driven mechanism provides power, power-driven mechanism connection
Host computer realizes the control to suspended particulate agitating device, the first lifting measuring staff and the second lifting measuring staff.
Suspended particulate agitating device 4 includes agitating shaft 4-1 and blade 4-2, installs multiple leaves from top to bottom on agitating shaft 4-1
Piece 4-2, blade 4-2 are rotatablely connected by axle sleeve 4-3 and agitating shaft 4-1, and the distance of adjacent axle sleeve 4-3 is 0.9-1.2 times and stirs
The diameter of axis 4-1 forms angle between adjacent blades 4-2.
Blade 4-2 is 3, and the distance of adjacent axle sleeve 4-3 is the diameter of agitating shaft 4-1, forms angle between adjacent blades and is
60 degree, hollow out 4-4 is set, and the length direction of hollow out 4-4 is consistent with blade 4-2 length direction, blade 4-2 on blade 4-2
Two sides end of blade is symmetrical and opposite direction to be equipped with flanged plate 4-5, flanged plate 4-5 and blade 4-2 angle be 35-55 degree.
The flanged plate tilt angle of blade 4-2 end of blade, to increase the discharge of radiation stream, promotes to suspend between 35-55 degree
Particle is uniformly mixed, and the angle between adjacent blades is 60 degree, to promote to be formed upper and lower recycle stream between adjacent blades.
The length direction of hollow out 4-4 is consistent or vertical with blade 4-2 length direction, and the outer of flanged plate 4-5 is straight line
Or sine curve.
Suspended particulate agitating device 4 examines and determine water to the flow velocity near region while moving along parallel orbit 2-42
Suspension bed sediment in slot 1 is stirred, until the suspension bed sediment in flow velocity calibration tank 1 stirs evenly, it is supersonic flow to be measured
Fast instrument receives echo-signal creates good hydrostatic field condition.
The length direction of hollow out item and the length of blade direction are consistent or vertical, and the outer of flanged plate is straight line or sine
Curve.
Flow velocity calibration tank 1 is long 75m, and wide 1.5m, the concrete water tank of deep 1.5m, flow velocity calibration tank bottom of pond is covered with outstanding
Mud scum is husky, provides stable hydrostatic field environment for the calibrating of ultrasonic current metre flow parameters.According to the operating position of the calibrating vehicle
It sets and the speed of service, the flow velocity sink is divided into secure segment, accelerating sections, calibrating section, retaining segment, secure segment；
Track 2-4 is 2 and is arranged in parallel that track 2-4 is T-steel structural rail, and track 2-4 is long along flow velocity calibration tank
Direction is spent to be laid with.For providing operating path for the calibrating of ultrasonic current metre flow parameters；
The end of first lifting measuring staff 2-5 is located at underwater 0.2~0.6 meter.
Calibrating vehicle 2-3 is fixed on track 2-4 by 5 liang of Slideslips of sliding equipment, fixed on sliding equipment 5 and calibrating vehicle
2-3。
Sliding equipment includes rail wheel 5-1, bottom plate 5-2, vertical slide rail 5-3, adjustment sliding block 5-4, the bottom plate lower railway
It takes turns, vertical slide rail is set on the bottom plate, and vertically the track setting, vertical slide rail set adjustment sliding block to vertical slide rail, vertical sliding
Block is fixed with measuring car.Realize the adjustment of calibrating vehicle relative position.
Rail wheel 5-1, adjustment sliding block 5-4 are connect with respective power mechanism respectively, and power mechanism is connect with host computer.
Calibrating vehicle speed range is 0.1m/s~5m/s.
Universal counter 6 connects grating positioning mechanism 7, examines and determine vehicle 2-3 and grating positioning mechanism 7 connects host computer 3, grating
Positioning device 7 includes scale grating 7-1 and grating reading head 7-2, and scale grating 7-1 is fixed on parallel orbit 2-4, grating
Reading head 7-2 is fixed on calibrating vehicle 2-3, and the measurement data of grating reading head 7-2 is uploaded to host computer 3 and general counting respectively
In device 6.
Multiple short scale gratings are equidistantly installed on track, examine and determine record position information when vehicle 2-3 passes through scale grating,
When examining and determine constituency measured zone in section, the distance in calibrating section between certain two grating is directly read as measured zone.
Embodiment 1
The working principle of calibrating ultrasonic current metre is uniform for rectangular flow velocity calibration tank in cross section
Top sets up two tracks, and the calibrating vehicle of back and forth movement is capable of in installation one in orbit, and ultrasonic current metre is surveyed via lifting
Bar is fixed on calibrating vehicle.Water in flow velocity calibration tank be it is static, when calibrating vehicle move at different rates in orbit
When, can be equivalent to ultrasonic current metre be it is static, and the water in flow velocity calibration tank with speed relative to ultrasonic current metre
Flowing.Under the conditions of examining and determine known to vehicle speed, the flow velocity for measuring current meter is compared with speed, thereby determines that current meter
The error of flow rate detection judges its accuracy.
Vehicle is examined and determine as motion carrier, for carrying rabbling mechanism, ultrasonic current metre energy converter with friction speed along flat
The movement of row track, and the fixed platform as measurement standards such as scale grating, universal counters；Grating positioning mechanism is for examining
When determining vehicle and moving along parallel orbit, the measurement to calibrating truck position, speed and runing time is realized；Suspended particulate agitating device 4
For stirring evenly the suspension bed sediment in flow velocity calibration tank, stable mirror field ring is provided for ultrasonic current metre to be measured
Border, suspended particulate agitating device 4 include agitating shaft 4-1 and blade 4-2, install multiple blade 4- from top to bottom on agitating shaft 4-1
2, blade 4-2 are rotatablely connected by axle sleeve 4-3 and agitating shaft 4-1, and the distance of adjacent axle sleeve 4-3 is 0.9-1.2 times of agitating shaft 4-1
Diameter, angle is formed between adjacent blades 4-2, blade 4-2 is 3, and the distance of adjacent axle sleeve 4-3 is the diameter of agitating shaft 4-1,
It is 60 degree that angle is formed between adjacent blades, and hollow out 4-4, the length direction and blade 4-2 of hollow out 4-4 are arranged on blade 4-2
Length direction is consistent, and the two sides blade 4-2 end of blade is symmetrical and opposite direction is pressed from both sides equipped with flanged plate 4-5, flanged plate 4-5 and blade 4-2
Angle is 35-55 degree, and the length direction of hollow out 4-4 is consistent with blade 4-2 length direction, and the outer of flanged plate 4-5 is straight line.Make
Suspension bed sediment is stirred evenly with suspended particulate agitating device, is created for ultrasonic current metre receives echo-signal to be measured good
Hydrostatic field condition.First lifting measuring staff is transported above and below perpendicular to orbital direction for controlling ultrasonic current metre energy converter to be measured
It is dynamic；Scale grating is as measurement standard, after being measured for ultrasonic current metre, determines calibrating car test the range ability of section
It measures；Universal counter is as measurement standard, by reading the measurement data of grating reading head, for calibrating car test
The runing time for determining section is counted；The position of host computer real time monitoring calibrating vehicle, velocity information, are adjusted in real time according to setting speed
The speed of service of whole calibrating vehicle, and draw the path curves of calibrating vehicle.
When measurement verification, no less than n test point is chosen in the vehicle speed range of calibrating vehicle and is tested, the selection root of n
According to the length of flow velocity calibration tank 1, the operation characteristic for examining and determine vehicle 2-3, ultrasonic current metre to be measured, flow parameters when actual test
Measurement range and precision etc. determine；Vehicle is examined and determine as motion carrier, for carry rabbling mechanism, ultrasonic current metre energy converter with
Friction speed is moved along parallel orbit, the fixed platforms of the measurement standards such as universal counter；Suspended particulate agitating device 4 is used
It is stirred evenly in by the suspension bed sediment in flow velocity sink, stable mirror field environment is provided for ultrasonic current metre to be measured；First
Lifting measuring staff moves up and down for controlling ultrasonic current metre energy converter to be measured perpendicular to parallel orbit direction；Grating positioning machine
Structure includes scale grating and grating reading head, and scale grating is fixed on closed slide, and grating reading head is fixed on calibrating vehicle,
The measurement data of grating reading head is uploaded in host computer and universal counter respectively, and multiple short scales are equidistantly installed on track
Grating, record position information directly reads inspection when examining and determine constituency measured zone in section when calibrating vehicle 2-3 passes through scale grating
The distance in section between certain two grating is determined as measured zone, for examining and determine vehicle 2-3 along parallel orbit 2-4；Suspended particulate agitation dress
4 are set for stirring evenly the suspension bed sediment in flow velocity sink 01, provides stable mirror field ring for ultrasonic current metre 6 to be measured
Border；First lifting measuring staff 2-5 is used to control the energy converter of ultrasonic current metre 6 to be measured perpendicular to the direction parallel orbit 2-4
Movement, ultrasonic current metre 6 to be measured is placed at the underwater position 0.2m~0.6m；Scale grating is used for as measurement standard
After ultrasonic current metre flow velocity to be measured is measured, the range ability for determining section to calibrating car test is measured；Universal counter is made
For measurement standard, by reading the measurement data of grating reading head, based on the runing time by determining section to calibrating car test carries out
Number；The position of host computer real time monitoring calibrating vehicle, velocity information, the operation speed of calibrating vehicle 03 is adjusted according to setting speed in real time
Degree, and draw the path curves of calibrating vehicle.
It is illustrated in figure 4 flow velocity calibration tank zoning plan, flow velocity calibration tank can be divided into the initial segment a, accelerating sections b,
Examine and determine section c, retaining segment d and termination section e, wherein the initial segment a and termination section e is calibrating vehicle safety stop region, accelerating sections
B is by the calibrating vehicle 03 by the static distance for accelerating to setting speed and running, and the length of accelerating sections b is according to the calibrating vehicle
Self performance and setting speed size and it is different, calibrating section c be examine and determine vehicle within the scope of the setting speed limits of error along institute
The distance for stating parallel orbit traveling completes the measurement verification to ultrasonic current metre flow parameters to be measured, braking in calibrating section c
Section d is the distance run over when reducing to zero by setting speed after ultrasonic current metre to be measured is measured, the length of retaining segment d
It is different according to the calibrating vehicle self performance and setting speed size.
When work, drives suspended particulate agitating device 4 to move back and forth along parallel orbit 2-4 by calibrating vehicle first, stir suspension
Particle agitating device 4 along parallel orbit 2-4 while moving to the suspension in the flow velocity calibration tank 2-3 near region
Silt is stirred, until the suspension bed sediment in flow velocity calibration tank 2-3 stirs evenly, is received for ultrasonic current metre 6 to be checked
Echo-signal creates good hydrostatic field condition.
1. flow velocity is examined and determine
Vehicle is examined and determine from the initial segment a setting in motion, reaches setting speed after accelerating sections b, is pressed in calibrating section c calibrating vehicle
Setting speed traveling, 6 energy converter real-time measurement of ultrasonic current metre to be checked pass through the speed v of flow velocity calibration tank 2-3is(i=1,
2 ... ..., n), vehicle host computer manually is examined and determine into calibrating flow parameters input, while wireless remote control device control is passed through by testing person
System calibrating vehicle is moved in measurement range with different calibrating speed drawings ultrasonic current metre 6 to be checked, and grating positioning mechanism is real-time
The impulse signal value of output is sent in universal counter and host computer by the running position of detection calibrating vehicle and speed simultaneously,
Universal counter obtains calibrating vehicle in each position of parallel orbit by the pulse count signal exported to grating positioning mechanism
The time point at place, host computer receive the displacement information of grating positioning mechanism output and the temporal information of universal counter output,
Show that the running track figure of real-time rendering calibrating vehicle on screen, calibrating vehicle, by reducing speed now after calibrating section c, are led to by setting speed
Speed reduces to 0m/s after crossing retaining segment d, rests against and terminates section e.Vehicle 03 is examined and determine from terminating section e setting in motion, it is accelerated-to reach and set
After constant speed degree-presses setting speed operation-retarding braking process, the initial segment a is rested against, ultrasonic current metre record calibrating vehicle is by setting
Velocity amplitude v when constant speed degree is runir(i=1,2 ... ..., n), calibrating vehicle is once to be measured by same setting speed back and forth movement
Measurement flow speed value of the flow velocity average value of the calibrating section c of ultrasonic current metre measurement as ultrasonic current metre to be measured, according to inspection
Determine the length for the calibrating section c that garage crosses, chooses a certain section in calibrating section as calibrating distance si(i=1,2 ... ..., n),
Multiple short scale gratings, record position information when calibrating vehicle 2-3 passes through scale grating, in calibrating section are equidistantly installed on track
When the measured zone of constituency, directly read distance in calibrating section between certain two grating as measured zone, with scale grating to this away from
From progress precise measurement, and read the time interval t of the measurement of universal counter corresponding to this sectionis(i=1,2 ... ..., n) and
tir(i=1,2 ... ..., n), utilizes formula v0is=si/tis(i=1,2 ... ..., n), v0ir=si/tir(i=1,2 ... ...,
N) standard flow rate value v of the ultrasonic current metre to be measured in calibrating distance is calculated0i=(v0is+v0ir)/2 (i=1,
2 ... ..., n), the flow velocity v with ultrasonic current metre to be checked measurementi(i=1,2 ... ..., n) is compared, and realizes to ultrasonic wave
The measurement verification of current meter flow parameters.
Vehicle is examined and determine in ultrasonic current metre range ability to be measured, uniform design 16 calibrating speed is examined and determine into speed,
The measurement verification to flow parameters in ultrasonic current metre range ability is realized in back and forth movement 16 times in flow velocity calibration tank.
Flow velocity error of indication calculation method is shown in formula (1) and formula (2).When carrying out the calibrating of 1.00m/s or less low flow velocity,
A other gross error can be cast out, do not participate in arithmetic mean of instantaneous value calculating, a calibrating point can only cast out a reading.Calibrating
Regulation below, as assay approval should be met with calculated result, do not met such as unqualified.
Measurement range: flow velocity: 0.03m/s~5m/s；
Accuracy: the flow velocity limits of error: ± (measured value × 0.5%+1) mm/s；
In formula: Δ viThe flow velocity indicating value absolute error of-i calibrating point, unit is metre per second (m/s) (m/s)；
The arithmetic mean of instantaneous value of-i calibrating point flow velocity reading, unit is metre per second (m/s) (m/s)；
vtiThe actual flow velocity (calibrating vehicle speed standard value) of-i calibrating point, unit is metre per second (m/s) (m/s)；
δiThe flow velocity relative error of indicating value of-i calibrating point.
2. repeatability
A certain speed is selected in ultrasonic current metre range ability, speed remains unchanged, with ultrasonic current metre to be checked
Continuous measurement 10 times, finds out measurement data standard deviation, calculation method is shown in formula (3) and formula (4), should meet repeated requirement:
In measurement range, repeatability error is not more than 0.3 times of the limits of error, as assay approval, does not meet such as not
It is qualified.
In formula: δR- repeatability error；
YF.S- instrument gamut, unit are metre per second (m/s) (m/s)；
S-repeatability standard deviation, unit are metre per second (m/s) (m/s)；
vi- any secondary flow velocity indicating value, unit are metre per second (m/s) (m/s)；
The average value of-n times current meter indicating value, unit are metre per second (m/s) (m/s)；
vn- n-th flow velocity indicating value；
N-pendulous frequency.
Compared with prior art, setting rationally, by design current velocity calibration tank indoors, is driven to be checked super by calibrating vehicle
Acoustic wave flow rate instrument passes through flow velocity calibration tank detection section at different rates, using scale grating and universal counter as metering
Standard, by equidistantly installing multiple short scale gratings on track, record position information when calibrating vehicle 2-3 passes through scale grating,
When examining and determine constituency measured zone in section, the distance in calibrating section between certain two grating is directly read as measured zone, measurement inspection
Determine segment length, calibrating vehicle is recorded by the time needed for the calibrating length, to calculate velocity amplitude conduct as universal counter
Velocity standard value is compared with the velocity amplitude of ultrasonic current metre measurement, and fine angle turntable measures value conduct and flows to standard
Value realizes the measurement verification of ultrasonic current metre flow velocity and flow direction, has the advantages that calibration accuracy is high, easy-operating.
Embodiment 2
Further include following technical scheme in addition to the technical solution of embodiment 1:
The length direction of hollow out 4-4 is vertical with blade 4-2 length, the outer sine curve of flanged plate 4-5, reduces agitation
In resistance.
The flanged plate tilt angle of blade 4-2 end of blade is, to increase the discharge of radiation stream, to promote suspended particulate between 55 degree
It is uniformly mixed, the angle between adjacent blades is 60 degree, to promote to be formed upper and lower recycle stream between adjacent blades.
The example of the utility model is described in detail above, but content is only the preferable implementation of the utility model
Example, should not be considered as limiting the scope of the present invention.Impartial change made according to the scope of application of this utility model
Change and improve etc., it should still belong within the patent covering scope of the utility model.
Claims (10)
1. a kind of ultrasonic current metre flow parameters metering and calibrating device, it is characterised in that examined including flow velocity calibration tank, flow velocity
Determine device, suspended particulate agitating device, the flow velocity calibrating installation is erected on the flow velocity calibration tank；
Flow velocity calibrating installation includes universal counter, grating positioning mechanism, calibrating vehicle, track, lifting measuring staff；The calibrating flow velocity
The track is set up above sink, the calibrating vehicle is slidably connected with the track, fixes the general meter on the calibrating vehicle
Number devices, the universal counter connect the grating positioning mechanism, and it is respectively that two lifting measuring staffs are arranged under the calibrating vehicle
The fixation for fixing ultrasonic current metre to be measured is arranged in one lifting measuring staff and the second lifting measuring staff, the first lifting measuring staff
Ring, described second goes up and down setting suspended particulate agitating device on measuring staff；
The suspended particulate agitating device includes agitating shaft and blade, and multiple blades from top to bottom, institute are installed on the agitating shaft
It states blade to be rotatablely connected by axle sleeve and the agitating shaft, the distance of the adjacent axle sleeve is the 0.9-1.2 times of agitating shaft
Diameter forms angle between the adjacent blade.
2. a kind of ultrasonic current metre flow parameters metering and calibrating device according to claim 1, it is characterised in that described
Blade is 3, and the distance of the adjacent axle sleeve is the diameter of the agitating shaft, and forming angle between the adjacent blade is 60 degree,
Hollow out item is set on the blade, and blade two sides end of blade is symmetrical and opposite direction is equipped with flanged plate, the flanged plate and institute
Stating leaf angle is 35-55 degree.
3. a kind of ultrasonic current metre flow parameters metering and calibrating device according to claim 2, it is characterised in that described
The length direction of hollow out item and the length of blade direction are consistent or vertical, and the outer of the flanged plate is straight line or sinusoidal song
Line.
4. a kind of ultrasonic current metre flow parameters metering and calibrating device according to claim 1, it is characterised in that described
Flow velocity calibration tank is long 75m, and wide 1.5m, the concrete water tank of deep 1.5m, the flow velocity calibration tank bottom of pond is covered with suspension mud
It is husky.
5. a kind of ultrasonic current metre flow parameters metering and calibrating device according to claim 1 or 2, it is characterised in that institute
It states track and is 2 and is arranged in parallel that the track is T-steel structural rail, and the track is along the flow velocity calibration tank length
Direction is laid with.
6. a kind of ultrasonic current metre flow parameters metering and calibrating device according to claim 1, it is characterised in that described
The end of first lifting measuring staff is located at underwater 0.2~0.6 meter.
7. a kind of ultrasonic current metre flow parameters metering and calibrating device according to claim 1,2,3 or 4, feature exist
It is fixed on the track in the calibrating vehicle by two Slideslip of sliding equipment, the fixed and calibrating on the sliding equipment
Vehicle.
8. a kind of ultrasonic current metre flow parameters metering and calibrating device according to claim 7, it is characterised in that described
Calibrating vehicle speed range is 0.1m/s~5m/s.
9. according to claim 1, a kind of ultrasonic current metre flow parameters metering and calibrating device, feature described in 2,4 or 6 exist
Host computer is connected with the grating positioning mechanism in the calibrating vehicle, the optical position assemble includes that scale grating and grating are read
Several heads, the scale grating are fixed on the track, and the grating reading head is fixed on the calibrating vehicle, and the grating is read
Several measurement data are uploaded to respectively in the host computer and the universal counter.
10. a kind of ultrasonic current metre flow parameters metering and calibrating device according to claim 9, it is characterised in that described
Multiple short scale gratings, record position information when the calibrating vehicle passes through scale grating are equidistantly installed on track.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920055508.XU CN209264758U (en) | 2019-01-14 | 2019-01-14 | A kind of ultrasonic current metre flow parameters metering and calibrating device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110702941A (en) * | 2019-10-30 | 2020-01-17 | 天津大学 | Measuring device and method for sensing characteristics of flow velocity sensor |
| CN110806499A (en) * | 2019-12-06 | 2020-02-18 | 江苏南水科技有限公司 | Flow velocity meter calibrating device and working method thereof |
| CN111002992A (en) * | 2019-11-27 | 2020-04-14 | 潍坊市水文局(潍坊市水土保持监测站) | Hydrology detects autonomic learning system |
| CN111026172A (en) * | 2019-11-27 | 2020-04-17 | 潍坊市水文局(潍坊市水土保持监测站) | Electric control system of flow velocity calibrating device |
| CN111289774A (en) * | 2020-03-20 | 2020-06-16 | 重庆市计量质量检测研究院 | Annular water tank current meter calibration system with water wave elimination device |
| CN112858728A (en) * | 2021-02-04 | 2021-05-28 | 国家海洋局南海标准计量中心 | Vertical electromagnetic ocean current measuring instrument flow direction calibration device, method and equipment |
| CN112986621A (en) * | 2021-02-08 | 2021-06-18 | 水利部交通运输部国家能源局南京水利科学研究院 | Low-speed high-precision flow velocity verification system in straight-line open tank and tracing method |
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2019
- 2019-01-14 CN CN201920055508.XU patent/CN209264758U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110702941A (en) * | 2019-10-30 | 2020-01-17 | 天津大学 | Measuring device and method for sensing characteristics of flow velocity sensor |
| CN111002992A (en) * | 2019-11-27 | 2020-04-14 | 潍坊市水文局(潍坊市水土保持监测站) | Hydrology detects autonomic learning system |
| CN111026172A (en) * | 2019-11-27 | 2020-04-17 | 潍坊市水文局(潍坊市水土保持监测站) | Electric control system of flow velocity calibrating device |
| CN110806499A (en) * | 2019-12-06 | 2020-02-18 | 江苏南水科技有限公司 | Flow velocity meter calibrating device and working method thereof |
| CN110806499B (en) * | 2019-12-06 | 2020-09-18 | 江苏南水科技有限公司 | Flow velocity meter calibrating device and working method thereof |
| CN111289774A (en) * | 2020-03-20 | 2020-06-16 | 重庆市计量质量检测研究院 | Annular water tank current meter calibration system with water wave elimination device |
| CN111289774B (en) * | 2020-03-20 | 2021-11-30 | 重庆市计量质量检测研究院 | Annular water tank current meter calibration system with water wave elimination device |
| CN112858728A (en) * | 2021-02-04 | 2021-05-28 | 国家海洋局南海标准计量中心 | Vertical electromagnetic ocean current measuring instrument flow direction calibration device, method and equipment |
| CN112986621A (en) * | 2021-02-08 | 2021-06-18 | 水利部交通运输部国家能源局南京水利科学研究院 | Low-speed high-precision flow velocity verification system in straight-line open tank and tracing method |
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