CN202442758U - High-precision verification device for water meter calibration - Google Patents

High-precision verification device for water meter calibration Download PDF

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Publication number
CN202442758U
CN202442758U CN2011205342083U CN201120534208U CN202442758U CN 202442758 U CN202442758 U CN 202442758U CN 2011205342083 U CN2011205342083 U CN 2011205342083U CN 201120534208 U CN201120534208 U CN 201120534208U CN 202442758 U CN202442758 U CN 202442758U
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China
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water
flow
test
water meter
pipeline
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CN2011205342083U
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谈晓彬
吴小青
陈泽远
吴辰
丁刚
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JIANGSU UNICHO INTELLIGENT TECH Co Ltd
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JIANGSU UNICHO INTELLIGENT TECH Co Ltd
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Abstract

The utility model discloses a high-precision verification device for a water meter calibration. The device comprises a water meter verifying basic mechanism, a flow counting mechanism, a metering mechanism, pipelines and a control system, wherein the water meter verifying basic mechanism comprises a testing pipeline segment composed of a plurality of testing straight-pipeline segments and a plurality of to-be-checked water meters in series connection at intervals; each to-be-checked water meter corresponds to one flow counting mechanism; the metering mechanism employs electromagnetic flow meters together with a flow electrical regulating valve to control a value of each tested flow; and the control system is in bidirectional electrical-connection with the flow counting mechanism, a flow point control mechanism and a high-precision electrical weighing device. The high-precision verification device for water meter calibration realizes automatically verification for the water meter by completely using a computer remote control together with an industrial automation mechanism controlled by a PLC (programmable logic controller) on-site or a single chip control mechanism mainly with an embedded system. Compared with a traditional verification method for the water meter, the method provided by the device can greatly improve verifying efficiency of the verification device for the water meter, reduce working intensity of verification workers and enhance detection accuracy on the basis of eliminating personnel errors.

Description

A kind of high precision water meter verification calibrating installation
Technical field
The utility model relates to a kind of high precision water meter verification calibrating installation.
Background technology
Water meter is widely used in industries such as tap water, heating power, chemical industry, and the enterprise or the metrological service that produce water meter need carry out the performance calibrating to the rules that the error of indication of these water meters is formulated according to relevant departments.The national metrological verification regulations regulation must be carried out three flow point tolerance calibratings such as nominal flow rate, boundary flow, minimum flow to water meter.Adopt manual static start and stop volume relative method at present mostly; The testing person needs manual three switching discharges; Read for four times by the water gauge registration and carry out standard measuring device liquid level gauge water level for three times and read; These data of manual record also calculate various errors, and manual again calibrating data input computer is convenient to file, inquires about and printed.The testing person needs the operation of real-time control verification device in the whole verification process; With 20mm bore water meter new standard calibration; One car water meter (7 water meters) calibrating needs 45 minutes consuming time; The artificial valve-off that when reading various registration, needs is waited for liquid level stabilizing in the standard capacity measure, the stability in these start and stop stages, the parallax error of level readings, all will be influenced the calibration precision by water gauge indicating graduation resolution and artificial origin.Numerous defectives such as the workload that this calibrating mode exists is big, efficient is low, precision is low, personal error is big, verification result is not objective are obvious.
The water meter calibration equipment that generally uses has three kinds:
1. manually-operated is connected with withstand voltage water meter calibration device: this kind device is more original static start-stop volumetric method device; Utilize the judgement of human eye to carry out manually-operated; Read the start-stop of numeral, adjusting flow point and the calibrating water consumption of red pointer, have very big personal error.Calibration efficient is low, and error is big, and personnel use many.
2. withstand voltage water meter calibration device (static start-stop volumetric method device) is with in infrared controlled standard series connection: this kind device is on manually-operated basis; On the standard capacity measure device, install infrared limit switch and solenoid valve additional, reduced the error that produces when artificial pass cuts off the water relatively.The spacing sum of errors of infrared limit switch is still continued to use the mode of artificial copy reading calibrating expression number, has determined that the error of this device is still very big.
3. camera head type is connected with withstand voltage water meter calibration device (static start-stop mass method device): this kind device is on manually-operated device, to have carried out bigger change, has realized semi-automation.Install camera additional, replace artificial copy reading number; Weighed generation standard measuring device with electronics, the calibration precision increases.Extraneous light source disturbs and the bubble of gauge outfit disturbs but camera receives when capturing image easily; Very easily producing the image captured can't identification and identification error and cause reading entanglement or can't the reading phenomenon; Need operating personnel in time on software, to revise, personnel's computation is required than higher.This device also can not bring new operating process and operation easier when thoroughly not dealing with problems.
The utility model content
The purpose of the utility model provides a kind of automatic control water meter verification calibrating installation that can reduce human resources, raising verification efficient significantly, promote calibration accuracy.
The technical scheme that realizes the utility model purpose is a kind of high precision water meter verification calibrating installation, comprises water meter calibration fundamental mechanism, flow counting mechanism, metering mechanism, pipeline and control system; The water meter calibration fundamental mechanism comprises water source device, treats the test pipeline section that water gauge is composed in series at interval by more piece test straight length and polylith that the test pipeline section is arranged on the calibration table top; Treat the corresponding flow counting mechanism of water gauge for every; Metering mechanism comprises flow point control mechanism, Work container and high-precision electronic weighing-appliance; Flow point control mechanism is high precision electromagnetic flowmeter and high-precision flow electric control valve; Said high-precision electronic weighing-appliance is arranged on the bottom of Work container; The tail end of test pipeline section will be tested water through pipeline and introduce flow point control mechanism and Work container successively; Control system is that the industrial automation mechanism that adopts computer remote control to combine on-the-spot PLC to control is main Single-chip Controlling mechanism with the embedded system perhaps, and control system is electrically connected with the flow point control mechanism and the high-precision electronic weighing-appliance of flow counting mechanism, metering mechanism.
A kind of high precision water meter verification calibrating installation also comprises the automatic vent mechanism by control system control; Said automatic vent mechanism comprise be successively set on test the pipeline that the pipeline section tail end is communicated with on vacuumize solenoid valve, vacuum control check valve, vacuum water filter and vacuum pump.
A kind of high precision water meter verification calibrating installation also comprises the automatic resistance test mechanism by control system control; Said automatic resistance test mechanism comprises pressure transducer, pressure solenoid valve and supercharge pump; Said pressure solenoid valve and pressure transducer be arranged on test the pipeline that the pipeline section head end is communicated with on; On said supercharge pump and the pipeline that test pipeline section head end is communicated with.
The photo-impulses counting mechanism that said flow counting mechanism is a waterproof comprises the light pulse sensor by control system control.
Said metering mechanism also comprises the commutator that is electrically connected with control system; Said commutator is arranged on the flow point control mechanism pipeline end, and the one of which end will be tested water and introduce Work container, and the other end is with the direct emptying of non-test water.
The high precision electromagnetic flowmeter of flow point control mechanism comprises nominal flow rate meter and boundary/minimum flow meter; Said high-precision flow electric control valve comprises and each self-corresponding nominal flow rate electric control valve of high precision electromagnetic flowmeter and boundary/minimum flow electric control valve; Pipeline is divided into the two-way branch road at test pipeline section tail end, and said nominal flow rate electric control valve and nominal flow rate meter, boundary/minimum flow electric control valve and boundary/minimum flow score is not arranged on the aforementioned two-way branch road; Said Work container comprises nominal flow rate Work container and boundary/minimum flow Work container; Said high-precision electronic weighing-appliance comprises nominal flow rate electronic-weighing equipment that is arranged at nominal flow rate Work container bottom and the boundary/minimum flow electronic-weighing equipment that is arranged at boundary/minimum flow Work container bottom; Said metering mechanism also comprises the commutator that is electrically connected with control system; Said commutator is arranged on the flow point control mechanism pipeline end, and the one of which end will be tested water and introduce Work container, and the other end is with the direct emptying of non-test water; Pipeline will pass through the test water of nominal flow rate electric control valve and introduce the nominal flow rate Work container.
A kind of high precision water meter verification calibrating installation also comprises the temperature sensor that is electrically connected with control system; Said temperature sensor be arranged on test the pipeline that the pipeline section head end is communicated with on.
Said water meter calibration fundamental mechanism also comprises in-line pump; Said water source device is a temperature control constant voltage water source mechanism, and temperature control constant voltage water source mechanism is a kind of mechanism that has replaced traditional standard water source mechanism and constant temperature voltage stabilizing water source can be provided to the water meter calibration fundamental mechanism through in-line pump.The water meter calibration fundamental mechanism also comprises total water inlet air valve and voltage-withstand test air valve; Said total water inlet air valve and voltage-withstand test air valve are controlled by control system, be separately positioned on test the pipeline that the pipeline section head end is communicated with on and with pipeline that test pipeline section tail end is communicated with on; Said metering mechanism also comprises the Work container draining valve; Said Work container draining valve comprises nominal flow rate Work container draining valve and boundary/minimum flow Work container draining valve, is separately positioned on the pipeline of nominal flow rate Work container and boundary/minimum flow Work container and temperature control constant voltage water source mechanism.
Said test pipeline section has N row, and N is a natural number; Said every row tests the automatic resistance test of a pipeline section common corresponding automatic vent mechanism of respectively corresponding or every adjacent two rows mechanism to be checked and mechanism.
Adopt technique scheme, the utlity model has following beneficial effect:
(1) the high precision water meter verification calibrating installation of the utility model is realized the full-automation of calibration process through control system; Control system can adopt computer remote control to combine the industrial automation mechanism of on-the-spot PLC control or be that main Single-chip Controlling mechanism controls and realizes full-automatic calibration with the embedded system; Dress table back needs only the click initiating key at the computation interface;---voltage-withstand test---nominal flow rate---boundary flow---detection of minimum flow that device will be accomplished vacuumizing and exhausting successively; Calibrating finishes the back device joins fixed computing machine calibrating software and calculates verification result by rules automatically and preserve, and has perfect database functions such as calibrating data query, correction, statistics, printing.After this device builds up, can realize automatic detection,, can improve the calibration operation efficient of water meter device greatly, alleviate testing person's labour intensity, on the basis of eliminating personal error, improve accuracy in detection with respect to traditional water meter calibration device to water meter.
(2) water meter calibration equipment employing in the past all is glass rotameter; The flow control of spinner-type flowmeter is fixedly to use after manual work is adjusted again; But along with the fluctuation of hydraulic pressure, flowmeter can produce error to the control of flow, causes final calibration accurate inadequately.And the utility model adopts high-precision flow electric control valve and high precision electromagnetic flowmeter; In use calibrate electromagnetic flowmeter with mass method; As the foundation that the flow correction coefficient is set up, played the function of electromagnetic flowmeter being carried out self check when having improved the measuring accuracy of electromagnetic flowmeter.The use of high precision electromagnetic flowmeter can accomplish to implement monitoring hydraulic pressure, and makes adapt automatically, can realize detecting automatically by instantaneous delivery and integrated flux to water meter, has improved the efficient of calibrating and the degree of accuracy and the accuracy of calibrating greatly.
(3) the utility model utilizes control system control vacuum pump to vacuumize to make and treats to form negative pressure in water gauge and the test straight length, does not have bubble behind the water-filling, realizes the automatic vent function fully.
(4) the utility model uses the automatic resistance test mechanism of band pressure transducer to combine with control system to control miniature electromagnetic valve and realizes automatic resistance test.
(5) the utility model adopts method of standard table to combine the static start-stop mass method to realize the calibrating of water meter.Use the high-precision electronic weighing-appliance and the not isometric flow Work container of two kinds of different ranges, the metering mechanism of public scale flow and boundary/minimum flow separately, satisfied different volumes measurement water high-precision weighing requirement in the different flow test.And in the measurement of boundary/minimum flow, installed additional and grasped the automatically commutator of the standard of control of system system, stop non-effective measurement water to flow in the metering mechanism, further improved the precision of payment foundation, saved start and stop stabilization time.Meet the requirement of national metrological verification regulations JJG 164-2000 to Work container and start and stop equipment.
(6) the utility model uses light pulse sensor accumulative total to treat the number of turns of water gauge cutaneous acupuncture; Signal is transferred to general switching software and carries out backstage comparison calculating; Draw the calibrating data, reach full-automatic copy reading number, improved the accuracy and the work efficiency of calibrating; It is the requirement of 1/2 minimum division value that the meter reading that meets national metrological verification regulations JJG 162-2009 etc. fully requires permissible error, and light pulse sensor reading precision can reach 1/6 of the minimum calibrating of water meter scale division value.
(7) the flow counting mechanism of the utility model can move on the calibration table top, and the installation site is easy to adjust, therefore can be adapted to the flow metering of treating water gauge of different vendor, different size, different model or varying number.
(8) the utility model reload temperature sensor; Feedback current actual temperature signal is given control system; So that water source temperature in the adjustment temperature control constant voltage water source mechanism; In addition the general switching software backstage is revised, and the tracking that has realized water-mass density is confirmed and revised automatically, meets the water-mass density requirement of national metrological verification regulations JJG 162-2009 to mass method fully.
(9) automaticity of the utility model is high; Dress table back needs only the click initiating key at the computation interface;---voltage-withstand test---nominal flow rate---boundary flow---detection of minimum flow that device will be accomplished vacuumizing and exhausting successively; Calibrating finishes the back device joins fixed computing machine calibrating software and calculates verification result by rules automatically and preserve, and has perfect database functions such as calibrating data query, correction, statistics, printing.
(10) the utility model can also be networked many high precision water meter verification calibrating installations through Ethernet; And carry out communication with the remote control center that comprises monitor control mechanism and data-carrier store; Every high precision water meter calibration equipment also uploads to remote monitoring center automatically with the calibration data storage; In the time of can accomplishing to occur fault such as suspension like this, detect data storage in high precision water meter calibration equipment, data can not be lost; Monitor control mechanism can be monitored each water meter school in real time and far test the calibration situation of calibrating installation and in time adjust, and data-carrier store is far tested each water meter school the calibration situation storage of calibrating installation in order to inquiry at any time.
(11) the utility model can realize that many rows carry out full automatic cold water meter verification simultaneously, have further improved work efficiency.
Description of drawings
For the content that makes the utility model is expressly understood more easily,, the utility model is done further detailed explanation, wherein below according to specific embodiment and combine accompanying drawing
Fig. 1 is the structure principle chart of the utility model.
Fig. 2 is the structural representation of the flow counting mechanism of the utility model.
Label in the accompanying drawing is:
Water meter calibration fundamental mechanism 1, test straight length 11, treat water gauge 12, calibration table top 13, flow counting institutional adjustment track 13-1, temperature control constant voltage water source mechanism 14, in-line pump 15, always intake air valve 16, voltage-withstand test air valve 17; Flow counting mechanism 2, sliding bottom 21, base fixator 22, actuator 23, angle controller 24, angle stop 25, metal connector 26, horizontal level micro actuator 27, light pulse sensor 28; Metering mechanism 3; Flow point control mechanism 31; High precision electromagnetic flowmeter 311; Nominal flow rate meter 311-1; Boundary/minimum flow meter 311-2; High-precision flow electric control valve 312; Nominal flow rate electric control valve 312-1; Boundary/minimum flow electric control valve 312-2; Work container 32; Nominal flow rate Work container 32-1; Boundary/minimum flow Work container 32-2; High-precision electronic weighing-appliance 33; Nominal flow rate electronic-weighing equipment 33-1; Boundary/minimum flow electronic-weighing equipment 33-2; Commutator 34; Work container draining valve 35; Nominal flow rate Work container draining valve 35-1; Boundary/minimum flow Work container draining valve 35-2; Pipeline 4; Control system 5; Automatic vent mechanism 6, vacuumize solenoid valve 61, vacuum control check valve 62, vacuum water filter 63, vacuum pump 64; Automatic resistance test mechanism 7; Temperature sensor 8; Remote control center 9, monitor control mechanism 91, data-carrier store 92.
Embodiment
(embodiment 1)
See Fig. 1; A kind of high precision water meter verification calibrating installation of present embodiment comprises water meter calibration fundamental mechanism 1, flow counting mechanism 2, metering mechanism 3, pipeline 4, temperature control constant voltage water source mechanism 14, control system 5, automatic vent mechanism 6, automatic resistance test mechanism 7 and temperature sensor 8.
Water meter calibration fundamental mechanism 1 comprises that more piece test straight length 11, polylith treat water gauge 12, calibration table top 13, temperature control constant voltage water source mechanism 14, in-line pump 15, always intake air valve 16 and voltage-withstand test air valve 17.More piece test straight length 11 treats that with polylith water gauge 12 is composed in series the test pipeline section at interval; Two row's test pipeline sections are arranged among Fig. 1; All be arranged on the calibration table top 13, calibration table top 13 is provided with and tests parallel two the corresponding flow counting institutional adjustment track 13-1 of pipeline section; Pipeline 4 is with temperature control constant voltage water source mechanism 14, in-line pump 15, test straight length 11 and treat that water gauge 12 is communicated with successively; Total water inlet air valve 16 and voltage-withstand test air valve 17 be by control system 5 controls, be separately positioned on test the pipeline 4 that the pipeline section head end is communicated with on and with test the pipeline 4 that the pipeline section tail end is communicated with on.
Treat water gauge 12 all corresponding flow counting mechanisms 2 for every; See Fig. 2, flow counting mechanism 2 is the photo-impulses counting mechanism of waterproof; Calibration table top 13 is provided with the flow counting institutional adjustment track 13-1 parallel with testing pipeline section; Flow counting mechanism 2 bag sliding bottoms 21, base fixator 22, actuator 23, angle controller 24, angle stop 25, metal connector 26, horizontal level micro actuator 27, light pulse sensor 28; Sliding bottom 21 is slidingly connected with flow counting institutional adjustment track 13-1; Base fixator 22 is arranged on the sliding bottom 21; Establish the angular turn device in the actuator 23, the angular turn device is fixedly connected with angle controller 24; Angle controller 24 is arranged on the actuator 23, and is rotationally connected with it; Angle stop 25 is fixed on the actuator 23; Metal connector 26 two ends are fixedly connected with angle controller 24 with horizontal level micro actuator 27 respectively; Light pulse sensor 28 is fixed on the outer end of horizontal level micro actuator 27, and is electrically connected with control system 5.Install treat water gauge 12 after, flow counting mechanism 2 is moved to corresponding water gauge 12 places that treat, by base fixator 22 location.When needs carried out the work of flow counting, control system 5 sent instruction, and the angular turn device in the control actuator 23 rotates, and drove angle controller 24 and metal connector rotation, made light pulse sensor 28 carry out the flow counting near the surface of treating water gauge 12.If counting position is not ideal enough, can adjusts light pulse sensor 28 and treat the distance and the angle on the surface of water gauge 12 through horizontal level micro actuator 27, in the hope of obtaining counting position the most accurately.After all the test of flow point finishes, send instruction by control system 5, it is spacing until being subject to the angle stop that the angular turn device in the control actuator 23 drives angle controller 24 reverse rotations, is convenient to treat that water gauge takes out from this device.
Metering mechanism 3 comprises flow point control mechanism 31, Work container 32, high-precision electronic weighing-appliance 33, commutator 34 and Work container draining valve 35.Flow point control mechanism and control system 5 two-way electrical connections comprise high precision electromagnetic flowmeter 311 and high-precision flow electric control valve 312; High precision electromagnetic flowmeter 311 comprises nominal flow rate meter 311-1 and boundary/minimum flow meter 311-2; High-precision flow electric control valve 312 comprises and high precision electromagnetic flowmeter 311 each self-corresponding nominal flow rate electric control valve 312-1 and boundary/minimum flow electric control valve 312-2.Pipeline 4 is divided into the two-way branch road at test pipeline section tail end, and nominal flow rate electric control valve 312-1 and nominal flow rate meter 31-1, boundary/minimum flow electric control valve 312-2 and boundary/minimum flow meter 311-2 is separately positioned on the test water introducing nominal flow rate Work container 32-1 that aforementioned two-way branch road upper pipeline 4 will pass through nominal flow rate electric control valve 312-1.High-precision electronic weighing-appliance 33 and control system 5 two-way electrical connections comprise nominal flow rate electronic-weighing equipment 33-1 that is arranged at nominal flow rate Work container 32-1 bottom and the boundary/minimum flow electronic-weighing equipment 33-2 that is arranged at boundary/minimum flow Work container 32-2 bottom.Commutator 34 is arranged on the terminal pipeline 4 of boundary/minimum flow meter, and wherein an end will be tested among the water introducing boundary/minimum flow Work container 32-2, and the other end is with the direct emptying of non-test water; Work container draining valve 35 comprises nominal flow rate Work container draining valve 35-1 and boundary/minimum flow Work container draining valve 35-2; Be separately positioned on nominal flow rate Work container 32-1 and boundary/minimum flow Work container 32-2 and the pipeline 4 that temperature control constant voltage water source mechanism 14 is communicated with; Be used for automatically the water in the Work container 32 being emptied to temperature control constant voltage water source mechanism 14; Not only drainage efficiency is high, and can the recycle water resource.
High precision water meter verification calibrating installation is realized the full-automation of calibration process through control system 5; Control system 5 can adopt computer remote control to combine the industrial automation mechanism of on-the-spot PLC control or be that main Single-chip Controlling mechanism controls and realizes full-automatic calibration with the embedded system; Control system 5 is as the control core of whole high precision water meter calibration equipment; Be used to receive the data that each sensor, flow point control mechanism, high-precision electronic weighing-appliance, Work container etc. detect; And these data are analyzed and compare; And then send the action that each solenoid valve of control command control, air valve, commutator etc. put rules into practice, thereby accomplish the calibration process automatically.
Automatic vent mechanism 6 is by control system 5 controls.Automatic vent mechanism 6 comprise be successively set on test the pipeline 4 that the pipeline section tail end is communicated with on vacuumize solenoid valve 61, vacuum control check valve 62, vacuum water filter 63 and vacuum pump 64.
Automatically resistance test mechanism 7 is by control system 5 controls.Automatically resistance test mechanism 7 comprises pressure transducer, pressure solenoid valve and supercharge pump; Pressure solenoid valve and pressure transducer be arranged on test the pipeline 4 that the pipeline section head end is communicated with on; Supercharge pump be arranged on test the pipeline 4 that the pipeline section head end is communicated with on.
Temperature sensor 8 is electrically connected with control system 5.On temperature sensor 8 and the pipeline 4 that test pipeline section head end is communicated with; In test process, give Control Software the pipe temperature signal feedback; Carry out the backstage and calculate comparison in conjunction with each flow point reading of weighing, taken into full account water-mass density error in the mass method calibrating, make test result more accurate.
Control system 5 can also be through the high precision water meter calibration equipment networking of Ethernet with many playscripts with stage directions embodiment; And carry out communication with the remote control center 9 that comprises monitor control mechanism 91 and data-carrier store 92; Every high precision water meter calibration equipment also uploads to remote monitoring center 9 automatically with the calibration data storage; Monitor control mechanism 91 can be monitored each water meter school in real time and far test the calibration situation of calibrating installation and in time adjust, and data-carrier store 92 is far tested each water meter school the calibration situation storage of calibrating installation in order to inquiry at any time.
Two row's test pipeline sections have been shown among Fig. 1, and pipeline 4 water delivering orifices are divided into two-way, supply water for corresponding row's test pipeline section through total water inlet air valve 16 controls respectively.The automatic resistance test of the two row test shared automatic vent mechanisms 6 of pipeline section and one mechanism 7 can certainly use the automatic resistance test of an automatic vent mechanism 6 and mechanism 7 respectively.It is 15 that the high precision water meter calibration equipment of present embodiment can be measured diameter---the cold-water meter of 25mm.
Current from temperature control constant voltage water source mechanism 14 flow out, through in-line pump 15, through total water inlet air valve 16, treat that water gauge 12, commutator 34 to Work container 32, get back to temperature control constant voltage water source mechanism 14 at last.On the signal piping of boundary flow and minimum flow commutator 34 being set automaticallyes switch; Commutator 34 switches in waterflow stabilization; Carry out electronic-weighing equipment 31 metering and light pulse sensor readings synchronously; Commutator 34 switches once more when arriving the setting variable, and control system 5 extracts the actual metered values and light pulse sensor count value is carried out data processing, and testing result forms report automatically.
The concrete operations step is following:
One, Installation and Debugging and the exhaust of pipeline automatic vacuum: on aut.eq., install and treat water gauge 12; Click software operation interface initiating key, control system 5 control vacuum pumps 64 are started working, and open and vacuumize solenoid valve 61; Pressure transducer by automatic resistance test mechanism 7 transmits numerical value to control system 5; Treat that water gauge 12 and the air in the test straight length 11 discharge through vacuum control check valve 62 and vacuum water filter 63, vacuum tightness reaches setting value (operation interface shows the examination value), makes that institute's calibration inner chamber and test pipeline are interior to become negative pressure state; So that can complete filling treat water gauge and test pipeline after injecting the test water, stop bubble phenomenon.Vacuumize end back control system and close vacuum pump 64 and vacuumize solenoid valve 61, finish automatic vent work.
Two, automatic resistance test: total water inlet air valve 16, nominal flow rate electric control valve 312-1 and boundary/minimum flow electric control valve 312-2 are opened in control system 5 controls behind the automatic vent end-of-job; Give and to be treated water gauge 12 water-fillings, close total water inlet air valve 16, nominal flow rate electric control valve 312-1, boundary/minimum flow electric control valve 312-2 and voltage-withstand test air valve 17 behind the certain hour.Open automatic voltage-withstand test mechanism 7; Transmit numerical value to control system 5 by pressure transducer; (operation interface shows the examination value) closed the voltage-withstand test program automatically when force value reaches setting value, keeps pressurized state to detect the withstand voltage properties of treating water gauge; The pressure transducer feedback pipeline pressure signal that installs additional is given Control Software, calculates value of pressure loss.Open total water inlet air valve 16, voltage-withstand test air valve 17, nominal flow rate electric control valve 312-1 and boundary/minimum flow electric control valve 312-2 after 3 minutes and carry out draining; Close total water inlet air valve 16, nominal flow rate electric control valve 312-1 and boundary/minimum flow electric control valve 312-2 behind the certain hour, finish automatic voltage-withstand test work;
Three, nominal flow rate detects: total water inlet air valve 16, nominal flow rate electric control valve 312-1 are opened in control system 5 controls behind the voltage-withstand test end-of-job automatically, 2 work of flow counting mechanism, and light pulse sensor 28 is done the contraposition adjustment slightly; Automatically nominal flow rate meter 31-1 flow point is set in adjustment synchronously; Light pulse sensor 28 beginning flow countings, current get into nominal flow rate Work container 32-1, when water consumption reaches setting value; Nominal flow rate electronic-weighing equipment 33-1 feedback weight signal is to control system 5; When nominal flow rate test water consumption reached national inspection provision requirement, control system 5 was closed nominal flow rate electric control valve 312-1 automatically, and actual metered value, light pulse sensor 28 count values of extracting nominal flow rate electronic-weighing equipment 33-1 are carried out data processing; Pass through the actual temperature value of temperature sensor 8 feedback test waters simultaneously; Carry out the water-mass density finishing, draw final detection result (operation interface shows the examination value), open the water in the nominal flow rate Work container draining valve 35-1 emptying nominal flow rate Work container 32-1; Close nominal flow rate Work container draining valve 35-1, finish nominal flow rate and detect;
Four, boundary and minimum flow detect: the nominal flow rate testing finishes 5 controls of back control system and opens total water inlet air valve 16, boundary/minimum flow electric control valve 312-2 automatically; Automatically boundary/minimum flow meter 31-2 flow point is set in adjustment; Commutator 34 switches in the current entering boundary/minimum flow Work container 32-2 in boundary/minimum flow meter 31-2 waterflow stabilization; Light pulse sensor 28 carries out the flow counting; When water consumption reached boundary flow detection setting value, boundary/minimum flow electronic-weighing equipment 33-2 fed back signal to control system 5, and control system 5 is closed boundary/minimum flow electric control valve 312-2 automatically; And actual metered value and light pulse sensor 28 count values of extracting boundary/minimum flow electronic-weighing equipment 33-2 are carried out data processing; Through the actual temperature value of temperature sensor 8 feedback test waters, carry out the water-mass density finishing simultaneously, draw final detection result (operation interface shows the examination value).Open the water in boundary/minimum flow Work container draining valve 35-2 emptying boundary/minimum flow Work container 32-2, close boundary/minimum flow Work container draining valve 35-2, finish the boundary flow detection.Control system 5 is adjusted automatically once more and is set boundary/minimum flow point; Commutator 34 switches in the current entering boundary/minimum flow Work container 32-2 in boundary/minimum flow meter 31-2 waterflow stabilization; Light pulse sensor 28 beginning flow countings; When water consumption reached minimum flow detection setting value, boundary/minimum flow electronic-weighing equipment 33-2 fed back signal to control system 5, and control system 5 is closed boundary/minimum flow electric control valve 312-2 automatically; And actual metered value and light pulse sensor 28 count values of extracting boundary/minimum flow electronic-weighing equipment 33-2 are carried out data processing; Through the actual temperature value of temperature sensor 8 feedback test waters, carry out the water-mass density finishing simultaneously, draw final detection result (operation interface shows the examination value).Control system 5 is opened the water in boundary/minimum flow Work container draining valve 35-2 emptying boundary/minimum flow Work container 32-2 automatically, closes boundary/minimum flow Work container draining valve 35-2, finishes minimum flow and detects;
Five, after boundary and minimum flow detected and finish, control system 5 generated all automatically and detects data report, shows at operation interface, and is stored in the programmable data storehouse, can check printing at any time; All air valve solenoid valves are got back to virgin state, prepare to carry out water meter calibration next time.
Above specific embodiment; Purpose, technical scheme and beneficial effect to the utility model have carried out further explain, the above specific embodiment that is merely the utility model that it should be understood that; Be not limited to the utility model; All within the spirit and principle of the utility model, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.

Claims (10)

1. a high precision water meter verification calibrating installation is characterized in that: comprise water meter calibration fundamental mechanism (1), flow counting mechanism (2), metering mechanism (3), pipeline (4) and control system (5); Said water meter calibration fundamental mechanism (1) comprises water source device, treats the test pipeline section that water gauge (12) is composed in series at interval by more piece test straight length (11) and polylith that the test pipeline section is arranged on the calibration table top (13); Treat the corresponding flow counting mechanism (2) of water gauge (12) for said every; Said metering mechanism (3) comprises flow point control mechanism (31), Work container (32) and high-precision electronic weighing-appliance (33); Said flow point control mechanism is high precision electromagnetic flowmeter (311) and high-precision flow electric control valve (312); Said high-precision electronic weighing-appliance (33) is arranged on the bottom of Work container (32); The tail end of said test pipeline section will be tested water through pipeline (4) and introduce flow point control mechanism (31) and Work container (32) successively; Said control system (5) is that the industrial automation mechanism that adopts computer remote control to combine on-the-spot PLC to control is main Single-chip Controlling mechanism with the embedded system perhaps, and control system (5) is electrically connected with the flow point control mechanism (31) and the high-precision electronic weighing-appliance (33) of flow counting mechanism (2), metering mechanism (3).
2. a kind of high precision water meter verification calibrating installation according to claim 1 is characterized in that: also comprise the automatic vent mechanism (6) by control system (5) control; Said automatic vent mechanism (6) comprise be successively set on test the pipeline (4) that the pipeline section tail end is communicated with on vacuumize solenoid valve (61), vacuum control check valve (62), vacuum water filter (63) and vacuum pump (64).
3. a kind of high precision water meter verification calibrating installation according to claim 1 is characterized in that: also comprise the automatic resistance test mechanism (7) by control system (5) control; Said automatic resistance test mechanism (7) comprises pressure transducer, pressure solenoid valve and supercharge pump; Said pressure solenoid valve and pressure transducer be installed in test the pipeline (4) that the pipeline section head end is communicated with on; Said supercharge pump be arranged on test the pipeline (4) that the pipeline section head end is communicated with on.
4. a kind of high precision water meter verification calibrating installation according to claim 1, it is characterized in that: said flow counting mechanism (2) is the photo-impulses counting mechanism of waterproof; Said calibration table top (13) is provided with the flow counting institutional adjustment track (13-1) parallel with testing pipeline section; Said flow counting mechanism (2) comprises sliding bottom (21), base fixator (22), actuator (23), angle controller (24), angle stop (25), metal connector (26), horizontal level micro actuator (27), light pulse sensor (28); Said sliding bottom (21) is slidingly connected with flow counting institutional adjustment track (13-1); Said base fixator (22) is arranged on the sliding bottom (21); Said actuator is provided with the angular turn device in (23), and the angular turn device links to each other with angle controller (24); Said angle controller (24) is arranged on the actuator (23), and is rotationally connected with it; Said angle stop (25) is fixed on the actuator (23); The two ends of said metal connector (26) are fixedly connected with angle controller (24) with horizontal position adjustment device (27) respectively; Said light pulse sensor (28) is fixed on the outer end of horizontal position adjustment device (27), and is electrically connected with control system (5).
5. a kind of high precision water meter verification calibrating installation according to claim 1, it is characterized in that: the high precision electromagnetic flowmeter (311) of said flow point control mechanism (31) comprises nominal flow rate meter (311-1) and boundary/minimum flow meter (311-2); Said high-precision flow electric control valve (312) comprises and each self-corresponding nominal flow rate electric control valve (312-1) of high precision electromagnetic flowmeter (311) and boundary/minimum flow electric control valve (312-2); Pipeline (4) is divided into the two-way branch road at test pipeline section tail end, and said nominal flow rate electric control valve (312-1) is separately positioned on the aforementioned two-way branch road with boundary/minimum flow meter (311-2) with nominal flow rate meter (31-1), boundary/minimum flow electric control valve (312-2); Said Work container (32) comprises not isometric nominal flow rate Work container (32-1) and boundary/minimum flow Work container (32-2); Said high-precision electronic weighing-appliance (33) comprises the nominal flow rate electronic-weighing equipment (33-1) that is arranged at nominal flow rate Work container (32-1) bottom of different ranges and is arranged at the boundary/minimum flow electronic-weighing equipment (33-2) of boundary/minimum flow Work container (32-2) bottom; Said metering mechanism (3) also comprises the commutator (34) that is electrically connected with control system (5); Said commutator (34) is arranged on the terminal pipeline (4) of boundary/minimum flow meter, and wherein an end will be tested in the water introducing boundary/minimum flow Work container (32-2), and the other end is with the direct emptying of non-test water; Pipeline (4) will pass through the test water of nominal flow rate electric control valve (312-1) and introduce in the nominal flow rate Work container (32-1).
6. a kind of high precision water meter verification calibrating installation according to claim 1 is characterized in that: also comprise the temperature sensor (8) that is electrically connected with control system (5); Said temperature sensor (8) be arranged on test the pipeline (4) that the pipeline section head end is communicated with on.
7. a kind of high precision water meter verification calibrating installation according to claim 1, it is characterized in that: said water meter calibration fundamental mechanism (1) also comprises in-line pump (15); Said water source device is a temperature control constant voltage water source mechanism (14); Said temperature control constant voltage water source mechanism (14) provides the constant temperature and pressure water source through in-line pump (15) to water meter calibration fundamental mechanism (1).
8. a kind of high precision water meter verification calibrating installation according to claim 7, it is characterized in that: said water meter calibration fundamental mechanism (1) also comprises total water inlet air valve (16) and voltage-withstand test air valve (17); Said pipeline (4) is with temperature control constant voltage water source mechanism (14), in-line pump (15), test straight length (11) and treat that water gauge (12) is communicated with successively; Said total water inlet air valve (16) and voltage-withstand test air valve (17) be by control system (5) control, be separately positioned on test that pipeline (4) that the pipeline section head end is communicated with is gone up and with test the pipeline (4) that the pipeline section tail end is communicated with on; Said metering mechanism (3) also comprises Work container draining valve (35); Said Work container draining valve (35) comprises nominal flow rate Work container draining valve (35-1) and boundary/minimum flow Work container draining valve (35-2), is separately positioned on nominal flow rate Work container (32-1) and boundary/minimum flow Work container (32-2) and the pipeline (4) that temperature control constant voltage water source mechanism (14) is communicated with.
9. according to the described a kind of high precision water meter verification calibrating installation of one of claim 3 to 8, it is characterized in that: said test pipeline section has N row, and N is a natural number; Said every row tests a pipeline section common corresponding automatic vent mechanism (6) of corresponding respectively or every adjacent two rows mechanism to be checked and an automatic resistance test mechanism (7).
10. a kind of high precision water meter verification calibrating installation according to claim 9 is characterized in that: said high precision water meter verification calibrating installation carries out communication through Ethernet and remote control center (9); Said remote control center (9) comprises monitor control mechanism (91) and data-carrier store (92).
CN2011205342083U 2011-12-19 2011-12-19 High-precision verification device for water meter calibration Expired - Lifetime CN202442758U (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102915055A (en) * 2012-10-25 2013-02-06 湖南省电力公司科学研究院 Intelligent method for metering cold water usage of hot water system with heat pump
CN102944291A (en) * 2012-11-07 2013-02-27 宁波市埃美仪表制造有限公司 Device for testing wear of a plurality of water meters and water circulation method of device for testing wear of a plurality of water meters
CN103175588A (en) * 2011-12-20 2013-06-26 江苏远传智能科技有限公司 Full-automatic series verification calibrating device with pressure-resistant water meter
CN105865589A (en) * 2016-06-28 2016-08-17 宁波东海仪表水道有限公司 Intelligent full-flow-point full-automatic water meter calibration apparatus
CN105953870A (en) * 2016-07-18 2016-09-21 苏州北通智能科技有限公司 Automatic water meter test board
CN106568484A (en) * 2016-11-02 2017-04-19 北京控制工程研究所 Self-controlled flow test device
CN109916478A (en) * 2019-03-26 2019-06-21 银川融神威自动化仪表厂(有限公司) A kind of calibration of discharge coefficient, meter proof method and normal flow device
CN110095169A (en) * 2019-04-21 2019-08-06 优艾特仪表科技成都有限公司 A kind of ultrasonic water meter calibration equipment and method of calibration

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103175588A (en) * 2011-12-20 2013-06-26 江苏远传智能科技有限公司 Full-automatic series verification calibrating device with pressure-resistant water meter
CN102915055A (en) * 2012-10-25 2013-02-06 湖南省电力公司科学研究院 Intelligent method for metering cold water usage of hot water system with heat pump
CN102944291A (en) * 2012-11-07 2013-02-27 宁波市埃美仪表制造有限公司 Device for testing wear of a plurality of water meters and water circulation method of device for testing wear of a plurality of water meters
CN105865589A (en) * 2016-06-28 2016-08-17 宁波东海仪表水道有限公司 Intelligent full-flow-point full-automatic water meter calibration apparatus
CN105865589B (en) * 2016-06-28 2019-02-12 宁波东海仪表水道有限公司 Intelligent full flow point full-automatic water meter calibration equipment
CN105953870A (en) * 2016-07-18 2016-09-21 苏州北通智能科技有限公司 Automatic water meter test board
CN106568484A (en) * 2016-11-02 2017-04-19 北京控制工程研究所 Self-controlled flow test device
CN106568484B (en) * 2016-11-02 2019-09-06 北京控制工程研究所 A kind of control flow testing device certainly
CN109916478A (en) * 2019-03-26 2019-06-21 银川融神威自动化仪表厂(有限公司) A kind of calibration of discharge coefficient, meter proof method and normal flow device
CN110095169A (en) * 2019-04-21 2019-08-06 优艾特仪表科技成都有限公司 A kind of ultrasonic water meter calibration equipment and method of calibration

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