CN106768208A - Semi-automatic water meters in series connection verifies calibrating installation - Google Patents
Semi-automatic water meters in series connection verifies calibrating installation Download PDFInfo
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- CN106768208A CN106768208A CN201710076645.7A CN201710076645A CN106768208A CN 106768208 A CN106768208 A CN 106768208A CN 201710076645 A CN201710076645 A CN 201710076645A CN 106768208 A CN106768208 A CN 106768208A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 188
- 238000009434 installation Methods 0.000 title claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 230000009189 diving Effects 0.000 claims 1
- 238000012795 verification Methods 0.000 abstract description 20
- 238000005259 measurement Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 238000004364 calculation method Methods 0.000 description 5
- 230000006641 stabilisation Effects 0.000 description 5
- 238000011105 stabilization Methods 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- -1 heating power Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
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- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
Checking device is tested the present invention relates to a kind of water meter,Specially a kind of semi-automatic water meters in series connection verification calibrating installation,Including device body,PLC,Meter clamping mechanism,Constant pressure mechanism,Constant temperature mechanism,Flow control valve,Water tank,Image collecting device and water pipe,The meter clamping mechanism includes that water gage bracket and the water meter fastener that is spirally connected are some,The constant pressure mechanism includes water pump,Frequency converter,Vacuum tank and pressure sensor,The water pump,Vacuum tank and pressure sensor are serially connected on water pipe,The pressure sensor is also electrically connected with PLC,The PLC is also sequentially connected electrically with frequency converter and water pump,The constant temperature mechanism includes water chiller,Immersible pump and temperature sensor,The immersible pump is located in water tank and is connected with water chiller,The temperature sensor is located in water tank,The water chiller,Immersible pump and temperature sensor are electrically connected with PLC,The flow control valve is serially connected on water pipe and is connected with PLC.
Description
Technical field
Checking device is tested the present invention relates to a kind of water meter, specially a kind of semi-automatic water meters in series connection verification calibrating installation.
Background technology
Water meter is widely used in the industries such as running water, heating power, chemical industry, and the enterprise or metrological service for producing water meter are needed to these
The error of indication of water meter carries out performance detecting according to the code that relevant departments formulate.National metrological verification regulations specify, to water meter
Three flow point tolerance calibratings such as nominal flow rate, boundary flow, minimum discharge must be carried out.Opened using manual static mostly at present
Stop volume comparison method, testing person needs manual three switchings water-carrying capacity, and four readings enter rower by water gauge registration and three times
Quasi- measuring device liquid level gauge water level reads, and these data of manual record simultaneously calculate various errors, then by hand calibrating data inputting meter
Calculation machine is easy to achieve, inquire about and print.Testing person needs the operation of real-time control calibrating installation in whole verification process, with
20mm bore water meter new standard calibrations, a car water meter (7 water meters) calibrating need to take 45 minutes, manually when various registrations are read
Need to close liquid level stabilizing in valve wait standard capacity measure, the interpretation of the stability, level readings in these start and stop stages is missed
Differ from, calibration precision will all be influenceed by water gauge indicating graduation resolution ratio and artificial origin.The work that this calibrating mode is present
Measure numerous defects such as big, efficiency is low, precision is low, human error is big, verification result is not objective apparent.
The pressure-resistant water meter verification calibrating installation of fully-automatic series band for commonly using has three kinds:1st, artificial operating series band is pressure-resistant
Apparatus for calibrating water meter:This kind of device is more original static start-stop volume subtraction unit, is manually operated using the judgement of human eye,
The start-stop of the numeral, regulation flow point and calibrating water consumption of red pointer is read, there is very big human error.Calibration efficiency is low,
Error is big, and librarian use is more.2nd, infrared controlled standard series connection is with pressure-resistant apparatus for calibrating water meter (static start-stop volume subtraction unit):This
It is on the basis of manually-operated, to have installed infrared limit switch and magnetic valve, phase additional on standard capacity measure device to plant device
The error produced when manually closing down water to reducing.Manually copy reading calibrating is represented for the spacing error of infrared limit switch and still edge
Several modes, determines that the error of the device is still very big.
Camera head type is connected with pressure-resistant apparatus for calibrating water meter (static start-stop quality subtraction unit):This kind of device is manually to grasp
Larger change has been carried out on the device of work, semi-automation has been realized.Camera is installed additional, instead of artificial copy reading number；Electronic scale
Standard measuring device is instead of, calibration precision increases.But camera be easily subject to when capturing image extraneous light source interference and
The bubble interference of gauge outfit, easily produces captured image None- identified and identification mistake and causes reading entanglement or cannot reading
Phenomenon is higher to the requirement of personnel's computation, it is necessary to operating personnel are modified on software in time.The device does not have thoroughly solution
New operating process and operation difficulty certainly can be also brought while problem.
Current Chinese patent CN103175588A also discloses that a kind of pressure-resistant water meter verification calibrating installation of fully-automatic series band,
Including water meter calibration fundamental mechanism, flow counting mechanism, metrological service, pipeline and control system；The water meter calibration foundation machine
Structure includes water source device, the test pipeline section that water gauge spaced series are constituted, test pipeline section is treated by more piece test straight length and polylith
It is arranged on correction platform position；Described every piece is treated water gauge one flow counting mechanism of correspondence；The metrological service include flowmeter,
Work container and electronic weighing appliance, the electronic weighing appliance are arranged on the bottom of Work container；The tail of the test pipeline section
Water is introduced flowmeter and Work container successively by pipeline for end；The control system combines scene using computer long-distance control
The industrial automation mechanism or the Single-chip Controlling mechanism based on embedded system of PLC controls；Control system and flowmeter
Number mechanism, the electronic weighing appliance electrical connection of metrological service.
Also include measurement magnetic valve simultaneously；The measurement magnetic valve includes nominal flow rate magnetic valve, boundary flow solenoid valve
With minimum discharge magnetic valve；The flow is calculated as spinner flowmeter, including with each self-corresponding nominal flow rate meter of measurement magnetic valve,
Boundary flowmeter and minimum stream gauge；Pipeline is divided into three road branch roads, the nominal stream between test pipeline section tail end and commutator
Amount magnetic valve and nominal flow rate meter, boundary flow solenoid valve and boundary flowmeter and minimum discharge magnetic valve and minimum stream gauge
It is separately positioned on the branch road of foregoing three road.
The mode of the water meter verification of current all of prior art, the calibration standard that 03-09 is used is by big stream
Water meter is calibrated in the case of amount, boundary three flows of flow and low discharge, greatest problem present in it there are two,
First, the calculating of error reached using the measurement on this 3 points of big flow, boundary flow and low discharge not can completely
The error for showing the water meter is not necessarily completely in the range of technical requirements, still can be there is an other deviation water meter and be occurred,
Second, every time regulation flow during be required for again being measured after Flow-rate adjustment to stabilization process, regulation flow when
Between plus the current stabilization time add time of measuring, the time of measuring for water meter is all more long each time, the water meter quantity that can be calibrated for one day
Very limited, the effect of detection is different sooner or later, and influence of the temperature to watch core is very big, and table on the contrary can after many times having detected
There is error.
The content of the invention
For above-mentioned deficiency of the prior art, a kind of water meter semi-automatic clamping of present invention offer, cost performance are high and can oneself
Dynamic coutroi velocity and flow realize continuous measurement and state modulator stabilization, and calibration error is extremely low, high semi-automatic of calibration efficiency
Water meters in series connection verifies calibrating installation.
To realize above technical purpose, the technical scheme is that:A kind of semi-automatic water meters in series connection verification calibrating installation,
Including device body, PLC, meter clamping mechanism, constant pressure mechanism, constant temperature mechanism, flow control valve, water tank, image collector
Put and water pipe, the meter clamping mechanism is spirally connected including water gage bracket and water meter, and fastener is some, and the water gage bracket is arranged on device body
On, the water meter is spirally connected fastener on water gage bracket, and it is conducting structure, the constant pressure machine that the water meter is spirally connected in fastener
Structure includes water pump, frequency converter, vacuum tank and pressure sensor, and the water pump, vacuum tank and pressure sensor are serially connected on water pipe,
The pressure sensor is also electrically connected with PLC, and the PLC is also sequentially connected electrically with frequency converter and water pump, institute
Stating constant temperature mechanism includes water chiller, immersible pump and temperature sensor, and the immersible pump is located in water tank and is connected with water chiller, institute
State temperature sensor to be located in water tank, the water chiller, immersible pump and temperature sensor are electrically connected with PLC, described
Flow control valve is serially connected on water pipe and is connected with PLC, and also including electronic scale restatement, electronic scale restatement is arranged on device
On body and with water pipe UNICOM.
Preferably, the water meter is spirally connected, fastener is slidably matched with water gage bracket.
Preferably, the flow control valve includes the ball valve comprising valve element and valve element connecting rod being connected on water pipe
Door, servomotor and zero point positioner for driving the Ball valve, and for connect the servo motor output shaft with
The shaft coupling of the valve element connecting rod of the Ball valve, the servomotor closed mode orientates zero point as, and by the feedback of status
To servomotor so as to the aperture of Ball valve described in the Serve Motor Control, the valve element top is provided with groove, the ball valve
The valve element connecting rod lower end of door is placed in groove；The valve element of the Ball valve is the spheroid that a center is provided with manhole, described
Valve element is provided with the microflute that several are easy to current to pass through on ball internal chamber wall, and the microflute is communicated with the manhole.
Preferably, diameter of the diameter of the manhole of the valve element less than delivery port.
Preferably, the microflute is " V " type.
Preferably, the microflute is distributed on the ball lumen circumference, quantity is 1-3.
Preferably, the microflute is 2 symmetrical " V " type grooves.
From the above, it can be seen that the present invention possesses advantages below：First, by servomotor, zero point positioner, ball
Cooperation between valve and microflute can allow that the adjustment node of flow velocity forms continuity and surveys from original distributing measurement
Amount.
Secondly, the pressure in water pipe can be caused by the cooperation between pressure sensor, frequency converter, water pump and vacuum tank
Keep constant, while the cooperation of water chiller, immersible pump and water tank can cause that the water flow temperature in water pipe keeps constant, so that
The parameters for obtaining the current to be measured in water pipe keep stabilization, so that the fixed stability of water meter amount.
Again, no longer it is the swing circle of pointer by the data of image acquisition device, but the deflection angle of pointer
Degree, using the ratio calculation error between deflection angle and predetermined deflection angle.
Furthermore, the cooperation that water gage bracket is spirally connected between fastener, conducting tube body and supporting part by water meter causes water meter
The work extremely convenient with clamp is put, the efficiency of water pump composite to be measured is greatly improved.
In view of the foregoing it is apparent that semi-automatic water meters in series connection verification calibrating installation of the invention install and measure error with
And the mode of calculation error is extremely improved and improves compared to existing at present for the mode of water meter verification, for water
For table dispatches from the factory, the quantitative requirement of personnel is not only greatly reduced while also improving the verification quantity of water meter.
Brief description of the drawings
Fig. 1 is the front view that semi-automatic water meters in series connection of the invention verifies calibrating installation；
Fig. 2 is the structural representation that semi-automatic water meters in series connection of the invention verifies calibrating installation；
Fig. 3 is the close-up schematic view of the A of semi-automatic water meters in series connection verification calibrating installation of the invention；
Fig. 4 is the rearview that semi-automatic water meters in series connection of the invention verifies calibrating installation；
Fig. 5 is the structural representation of the flow control valve of semi-automatic water meters in series connection verification calibrating installation of the invention；
Fig. 6 is the schematic diagram of the front view of the Ball valve valve element of semi-automatic water meters in series connection verification calibrating installation of the invention；
Fig. 7 is a left side for the Ball valve valve element of the flow control valve of semi-automatic water meters in series connection verification calibrating installation of the invention
The schematic diagram of view.
Brief description of the drawings：1st, device body, 2, PLC, 3, water tank, 4, image collecting device, 5, water pipe, 6, water meter
Frame, 7, water meter be spirally connected fastener, 9, water pump, 10, frequency converter, 11, vacuum tank, 12, pressure sensor, 13, water chiller, 14, latent
Water pump, 15, temperature sensor, 16, electronic scale restatement, 17, flow control valve, 171, servomotor, 172, shaft coupling, 173, zero
Spot locator, 174, Ball valve, 175, manhole, 176. microflutes.
Specific embodiment
As shown in drawings, a kind of semi-automatic water meters in series connection verification calibrating installation, including device body 1, PLC 2, folder
Table mechanism, constant pressure mechanism, constant temperature mechanism, flow control valve 17, water tank 3, image collecting device 4 and water pipe 5, the meter clamping mechanism
Being spirally connected including water gage bracket 6 and water meter, fastener 7 is some, and the water gage bracket 6 is arranged on device body 1, and the water meter is spirally connected tightly
Firmware 7 is arranged on water gage bracket 6, and it is conducting structure that the water meter is spirally connected in fastener 7, and the constant pressure mechanism includes water pump 9, becomes
Frequency device 10, vacuum tank 11 and pressure sensor 12, the water pump 9, vacuum tank 11 and pressure sensor 12 are serially connected on water pipe 5,
The pressure sensor 12 is also electrically connected with PLC 2, and the PLC 2 is also electric successively with frequency converter 10 and water pump 9
Connection, the constant temperature mechanism includes water chiller 13, immersible pump 14 and temperature sensor 15, and the immersible pump 14 is located in water tank 3
And connected with water chiller 13, the temperature sensor 15 is located in water tank 3, the water chiller 13, immersible pump 14 and TEMP
Device 15 is electrically connected with PLC 2, and the flow control valve 17 is serially connected on water pipe 5 and is connected with PLC 2, also wraps
Include electronic scale restatement 16, electronic scale restatement 16 be arranged on device body 1 and with the UNICOM of water pipe 5；The water meter is spirally connected fastener 7
It is slidably matched with water gage bracket 6；The flow control valve 17 includes the ball comprising valve element and valve element connecting rod being connected on water pipe
Valve 174, servomotor 171 and zero point positioner 173 for driving the Ball valve, and for connecting the servo electricity
The shaft coupling 172 of machine output shaft and the valve element connecting rod of the Ball valve, the closed mode of the servomotor 174 orientates zero as
Point, and the feedback of status is controlled the aperture of the Ball valve 174 to servomotor 171 so as to the servomotor 171, it is described
Valve element top is provided with groove, and the valve element connecting rod lower end of the Ball valve 174 is placed in groove 177；The valve of the Ball valve 174
The centers of Xin Wei mono- are provided with the spheroid of manhole 175, and the valve element is provided with several on ball internal chamber wall and is easy to what current passed through
Microflute 176, the microflute 176 is communicated with the manhole 175；The diameter of the manhole 175 of the valve element is less than water outlet
The diameter of mouth；The microflute 176 is " V " type；The microflute 176 is distributed on the ball lumen circumference, and quantity is 1-3；Institute
Microflute 176 is stated for 2 symmetrical " V " type grooves.
In the specific implementation, PLC is existed by controlling immersible pump that the water in water tank and water chiller are carried out into heat exchange
While ensureing T30 standards, the water temperature in water tank is controlled at 25 degree or so, water meter to be measured is directly placed in water meter and is spirally connected tightly
Water meter is tightened on firmware, PLC causes servo by opening servomotor after the feedback of zero point positioner
Motor is opened Ball valve by shaft coupling, and the list after opening by being preset in PLC selects corresponding flow velocity, current to pass through water
Pipe conduction pipe and water meter are flowed into electronic scale restatement, the pressure sensor on the water pipe, and voltage-stablizer, frequency converter and water pump are all
It is connected with PLC, PLC is by the pressure feedback on pressure sensor so as to adjust voltage-stablizer and by frequency converter
Adjustment pump working, and then the pressure adjusted in water pipe causes pressure in preset value is all steady in pressure and water temperature and flow velocity
In the case of fixed, PLC captures the collection picture of image collecting device, and angle ratio is realized by the deflection angle of pointer
Algorithm, so as to realize the calculating of error；When the error under calculating the flow velocity, the rotation of servomotor is further adjusted,
So as to further change flow velocity, the error of next flow velocity node is measured.
Such design presence is advantageous in that：First, by servomotor, zero point positioner, Ball valve and microflute it
Between cooperation can allow that the adjustment node of flow velocity forms continuity and measures from original distributing measurement.
Secondly, the pressure in water pipe can be caused by the cooperation between pressure sensor, frequency converter, water pump and vacuum tank
Keep constant, while the cooperation of water chiller, immersible pump and water tank can cause that the water flow temperature in water pipe keeps constant, so that
The parameters for obtaining the current to be measured in water pipe keep stabilization, so that the fixed stability of water meter amount.
Again, no longer it is the swing circle of pointer by the data of image acquisition device, but the deflection angle of pointer
Degree, using the ratio calculation error between deflection angle and predetermined deflection angle.
Furthermore, water gage bracket is spirally connected fastener so that the work extremely convenient put and screw of water meter by water meter, significantly
The efficiency that improve water pump composite to be measured, and production cost and the price sold are cheaper.
In view of the foregoing it is apparent that semi-automatic water meters in series connection verification calibrating installation of the invention install and measure error with
And the mode of calculation error is extremely improved and improves compared to existing at present for the mode of water meter verification, for water
For table dispatches from the factory, the quantitative requirement of personnel is not only greatly reduced while also improving the verification quantity of water meter.
Above to the present invention and embodiments thereof be described, the description does not have restricted, shown in accompanying drawing also only
It is one of embodiments of the present invention, actual structure is not limited thereto.If all in all ordinary skill people of this area
Member is enlightened by it, similar to the technical scheme without designing for creativeness in the case where the invention objective is not departed from
Frame mode and embodiment, protection scope of the present invention all should be belonged to.
Claims (7)
1. a kind of semi-automatic water meters in series connection verifies calibrating installation, including device body (1), PLC (2), meter clamping mechanism, perseverance
Press mechanism, constant temperature mechanism, flow control valve (17), water tank (3), image collecting device (4) and water pipe (5), the meter clamping mechanism
It is some including water gage bracket (6) and the water meter fastener (7) that is spirally connected, the water gage bracket (6) on device body (1), the water
Table is spirally connected fastener (7) on water gage bracket (6), and it is conducting structure, the constant pressure machine that the water meter is spirally connected in fastener (7)
Structure include water pump (9), frequency converter (10), vacuum tank (11) and pressure sensor (12), the water pump (9), vacuum tank (11) and
Pressure sensor (12) is serially connected on water pipe (5), and the pressure sensor (12) also electrically connects with PLC (2), described
PLC (2) is also sequentially connected electrically with frequency converter (10) and water pump (9), and the constant temperature mechanism includes water chiller (13), diving
Pump (14) and temperature sensor (15), the immersible pump (14) are located in water tank (3) and are connected with water chiller (13), the temperature
Sensor (15) is located in water tank (3), the water chiller (13), immersible pump (14) and temperature sensor (15) with PLC controls
Device (2) is electrically connected, and the flow control valve (17) is serially connected on water pipe (5) and is connected with PLC (2), also including electronics
Poidometer (16), electronic scale restatement (16) on device body (1) and with water pipe (5) UNICOM.
2. semi-automatic water meters in series connection according to claim 1 verifies calibrating installation, it is characterised in that：The water meter is spirally connected tightly
Firmware (7) is slidably matched with water gage bracket (6).
3. semi-automatic water meters in series connection according to claim 1 verifies calibrating installation, it is characterised in that：The flow control valve
(17) including be connected on water pipe the Ball valve (174) comprising valve element and valve element connecting rod, for driving the Ball valve
Servomotor (171) and zero point positioner (173), and for connecting the valve of the servo motor output shaft and the Ball valve
The shaft coupling (172) of core connecting rod, servomotor (174) closed mode orientates zero point as, and the feedback of status is watched
The aperture that motor (171) controls the Ball valve (174) so as to the servomotor (171) is taken, the valve element top is provided with recessed
Groove, the valve element connecting rod lower end of the Ball valve (174) is placed in groove (177)；The valve element of the Ball valve (174) be one in
The heart is provided with the spheroid of manhole (175), and the valve element is provided with the microflute that several are easy to current to pass through on ball internal chamber wall
(176), the microflute (176) communicates with the manhole (175).
4. semi-automatic water meters in series connection according to claim 3 verifies calibrating installation, it is characterised in that：The circle of the valve element
Diameter of the diameter of through hole (175) less than delivery port.
5. semi-automatic water meters in series connection according to claim 3 verifies calibrating installation, it is characterised in that：The microflute (176)
It is " V " type.
6. semi-automatic water meters in series connection according to claim 3 verifies calibrating installation, it is characterised in that：The microflute (176)
It is distributed on the ball lumen circumference, quantity is 1-3.
7. semi-automatic water meters in series connection according to claim 3 verifies calibrating installation, it is characterised in that：The microflute (176)
It is 2 symmetrical " V " type grooves.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710076645.7A CN106768208A (en) | 2017-02-13 | 2017-02-13 | Semi-automatic water meters in series connection verifies calibrating installation |
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| CN201710076645.7A CN106768208A (en) | 2017-02-13 | 2017-02-13 | Semi-automatic water meters in series connection verifies calibrating installation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108519138A (en) * | 2018-05-22 | 2018-09-11 | 江苏金钰铭电子有限公司 | A kind of energy-saving auto-controller for water meter detection |
| CN108759989A (en) * | 2018-05-22 | 2018-11-06 | 江苏金钰铭电子有限公司 | A kind of camera shooting type deflection angle recognition methods and device |
| CN110081955A (en) * | 2019-04-29 | 2019-08-02 | 新乡航空工业(集团)有限公司 | Variable viscosity lubricating oil micro-flow meter calibration method |
| CN118443122A (en) * | 2024-05-07 | 2024-08-06 | 超仪科技股份有限公司 | Efficient ultrasonic water meter testing device and testing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108519138A (en) * | 2018-05-22 | 2018-09-11 | 江苏金钰铭电子有限公司 | A kind of energy-saving auto-controller for water meter detection |
| CN108759989A (en) * | 2018-05-22 | 2018-11-06 | 江苏金钰铭电子有限公司 | A kind of camera shooting type deflection angle recognition methods and device |
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