CN203479372U - Full-automatic error correction checking device for electronic water meters - Google Patents
Full-automatic error correction checking device for electronic water meters Download PDFInfo
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- CN203479372U CN203479372U CN201320613152.XU CN201320613152U CN203479372U CN 203479372 U CN203479372 U CN 203479372U CN 201320613152 U CN201320613152 U CN 201320613152U CN 203479372 U CN203479372 U CN 203479372U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 134
- 238000005303 weighing Methods 0.000 claims abstract description 32
- 230000000875 corresponding Effects 0.000 claims abstract description 17
- 238000004458 analytical method Methods 0.000 claims abstract description 6
- 238000004450 types of analysis Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 230000000977 initiatory Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 239000003643 water by type Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002715 modification method Methods 0.000 description 2
- 230000003068 static Effects 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001105 regulatory Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000000087 stabilizing Effects 0.000 description 1
Abstract
The utility model discloses a full-automatic error correction checking device for electronic water meters. A water outlet pressure sensor, a plurality of water meters to be detected, one ends of a plurality of flow electric ball valves, a water inlet pressure sensor and an electric ball valve are sequentially fixed to a water pipe of a double-row multi-meter-position meter correction worktable. A plurality of error analysis and processing extension sets corresponding to the water meters to be detected are also fixed to the double-row multi-meter-position meter correction worktable, connected with the water meters to be detected through five-star wires in a one-to-one correspondence mode and connected with a control system host respectively. The other ends of the flow electric ball valves are connected with a working measuring cylinder respectively through rotor flow meters. An electronic weighing device is arranged at the bottom of the working measuring cylinder and connected with a weighing display device. According to the full-automatic error correction checking device, a single-chip microcomputer control mechanism with an embedded system as the main part is adopted to achieve full-automatic checking and error correction, operation can be easily carried out, checking efficiency can be improved, and human factors can be reduced.
Description
Technical field
The utility model relates to calibration equipment, relates in particular to a kind of full-automatic error correction calibration equipment of electronic water meter.
Background technology
Current water meter all trades and professions is used widely, and along with the develop rapidly of electronic information technology, electric water meter also becomes the developing direction of water meter industry gradually.The enterprise or the metrological service that produce water meter need to carry out performance detecting according to the vertification regulation of relevant departments' formulation to the error of indication of these water meters.National metrological verification regulations regulation, must commonly use three flow point tolerance calibratings such as flow, boundary flow, minimum flow to water meter.Collecting method is the most frequently used detection method, it is that the water yield of tested water meter of flowing through is collected in one or several container, and by Static Volumetric Method or the static weighing method measuring vessel water yield, testing person needs to switch discharge manual three times, read for four times by water gauge registration and carry out standard measuring device liquid level gauge water level for three times and read, these data of manual record the indicating value that calculates various errors and water meter compare, and determine the error of indication of water meter.In whole verification process, testing person needs the operation of real-time control verification device, manually when reading various registration, need valve-off to wait for liquid level stabilizing in standard capacity measure, the stability in these start and stop stages, the parallax error of level readings, by water gauge indicating graduation resolution and artificial origin, all will be affected calibration precision.Numerous defects such as workload that this calibrating mode exists is large, efficiency is low, precision is low, personal error is large, verification result is not objective.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of full-automatic error correction calibration equipment of electronic water meter is provided.
The full-automatic error checking correcting device of electronic water meter comprises spinner-type flowmeter, the display device of weighing, error analysis are processed extension set, control system main frame, five-pointed star line, water delivering orifice pressure transducer, work graduated cylinder, electronic weighing appliance, temperature sensor, water inlet pressure transducer, flow electrical ball valve, electric water meter to be measured, on water pipe on double-row type multi-epitope calibration worktable, be fixed with in turn water delivering orifice pressure transducer, a plurality of water meters to be measured, a plurality of flow electrical ball valves one end, water inlet pressure transducer, temperature sensor, on double-row type multi-epitope calibration worktable, be fixed with a plurality of error analyses corresponding with a plurality of water meters to be measured and process extension set, and corresponding connected one by one with five-pointed star line, a plurality of error analyses are processed extension set and are connected with control system main frame respectively, a plurality of flow electrical ball valve other ends are connected with work graduated cylinder by spinner-type flowmeter respectively, work graduated cylinder bottom is provided with electronic weighing appliance, electronic weighing appliance is connected with the display device of weighing.
Described water meter to be measured is full-electronic water meter.On the master control borad of described control system main frame, provide setting, exhaust, correction, initiating, reset function button, can carry out water consumption, meter constant, flow velocity L/h, platform potential coefficient %, the setting of correction factor % parameter, complete corresponding verification correction operation.
The utility model be take embedded system and is that main Single-chip Controlling mechanism realizes full automatic verification and error correction, simple to operate, can significantly reduce human resources, improve verification efficiency and promote calibration accuracy, reduce personal error and detect operation completely standard compliant
Accompanying drawing explanation
Fig. 1 is the structural representation of the full-automatic error correction calibration equipment of electronic water meter;
Fig. 2 is the error correction curve map (Q in figure of the full-automatic error correction method of calibration of electronic water meter of the utility model realization
1represent minimum flow, Q
2representative boundary flow, Q
3the conventional flow of representative, Q
4represented current-carrying capacity)
Embodiment
By reference to the accompanying drawings the utility model is further described now.The schematic diagram that these accompanying drawings are simplification only illustrates basic structure of the present utility model in a schematic way, therefore only shows the formation relevant with the utility model.
As shown in Figure 1, the full-automatic error checking correcting device of electronic water meter comprises spinner-type flowmeter 1, the display device 2 of weighing, error analysis are processed extension set 3, control system main frame 4, five-pointed star line 5, water delivering orifice pressure transducer 6, work graduated cylinder 7, electronic weighing appliance 8, temperature sensor 9, water inlet pressure transducer 10, flow electrical ball valve 11, electric water meter to be measured 12, on water pipe on double-row type multi-epitope calibration worktable, be fixed with in turn water delivering orifice pressure transducer 6, a plurality of water meters to be measured 12, a plurality of flow electrical ball valves 11 one end, water inlet pressure transducer 10, temperature sensor 9, on double-row type multi-epitope calibration worktable, be fixed with a plurality of error analyses corresponding with a plurality of water meters 12 to be measured and process extension set 3, and corresponding connected one by one with five-pointed star line 5, a plurality of error analyses are processed extension set 3 and are connected with control system main frame 4 respectively, a plurality of flow electrical ball valve 11 other ends are connected with work graduated cylinder 7 by spinner-type flowmeter 1 respectively, work graduated cylinder 7 bottoms are provided with electronic weighing appliance 8, electronic weighing appliance 8 is connected with the display device 2 of weighing.
Described water meter to be measured 12 is full-electronic water meter.On the master control borad of described control system main frame 4, provide setting, exhaust, correction, initiating, reset function button, can carry out water consumption, meter constant, flow velocity L/h, platform potential coefficient %, the setting of correction factor % parameter, complete corresponding verification correction operation.
The step of the full-automatic error checking modification method of electronic water meter is as follows:
1) by the water pipe on water meter 12 access double-row type multi-epitope calibration worktable to be measured, manually open water intaking valve, outlet valve;
2) corresponding check working environment is set, tested water temperature is according to cold water meter or hot water gauge setting, and cold water meter is no more than 30 ℃; It is 1Mpa that hot water gauge is no more than 90 ℃, maximum allowable working pressure;
3) by the shown weight of display device 2 of weighing, water temperature during test, different densities is scaled volume
the volume showing with water meter 12 to be measured compares, and draws error,
△ table=V wherein
table-V
just, the error of indication of this water meter 12 to be measured during test point for this reason, repeatable operation like this, what for error, exceed debugs or revises, and makes it finally reach zero error;
4) by the five-pointed star line 5 on water meter 12 to be measured and error analysis, processing extension set 3 is connected, by control system main frame 4, corresponding pulse value is set or the corresponding equivalent value of water meter is preset value after water meter production and assembly complete, finally compare, draw error, water meter 12 to be measured is as overproof in appearance, can by the control panel on control system main frame 4 " check key " is proofreaied and correct, as test after extension set error display on be+2%, to his compensation-2%, if-3% to it compensation 3%, finally reach zero error.
Embodiment
By several electric water meters 12 to be measured, be arranged on checking table, check and confirm that each water meter to be measured all installs, water flowing, makes current flow to from inlet valve 10, passes through successively testing conduit, water meter 12 to be measured, flow motorized adjustment ball valve 11, flowmeter 1, to work graduated cylinder 7, finally flows out from electronics balance and weighing device 8, forms a loop.When the stability of flow of flowmeter 1, carry out electronic weighing appliance 8 meterings and electronic type water meter 12 to be measured and calculate, control system main frame 4 extracts actual metered value and electronic type water meter value to be measured carries out data processing.Comparative result data can be processed extension set 3 by error analysis and show.
Technical requirement of the present utility model:
1) electronic scales: the high-precision industrial electronic scale of accuracy value 5 ɡ;
2) the high sensitivity pressure transducer of pressure transducer :-0.1～2.5Mpa;
3) temperature sensor: the numeral of 0～50 ℃ shows high sensor;
4) environmental baseline is as follows:
Ambient air temperature: 20 ℃ ± 5 ℃
Envionmental humidity: 60% ± 15%;
Ambient pressure: 86kPa～106kPa
Supply voltage: nominal voltage (U
nom), franchise ± 5%;
Supply frequency: nominal frequency, franchise ± 2%;
The concrete steps of the full-automatic error checking modification method of electronic water meter are as follows:
1) on automatic check device, install and treat water gauge 12, open inlet valve, click the exhausting key on control system host service function interface, start working, by water inlet pressure transducer 10, transmit numerical value to control system main frame 4, start to vacuumize, start discharge and treat the air in water gauge 12 and test pipeline section, make vacuum tightness reach setting value, make to form negative pressure state in institute's water meter 12 inner chambers to be measured and test pipeline, so that can fill water meter to be measured and test pipeline completely after injecting test water, avoid producing bubble phenomenon.Vacuumize and finish rear valve-off, finish automatic vent work.
2) after automatic vent finishes, control system main frame sends water inlet instruction, total water intaking valve is opened in control, electronic weighing appliance 8, each flow motorized adjustment ball valve 11, gives water meter 12 water-fillings to be measured, by water inlet pressure transducer, transmits numerical value to control system main frame 4, when force value reaches setting value, (when electronic-weighing display device 2 readings are 0), stops discharging water.Keep pressure after 1 minute, to open total water intaking valve, each flow motorized adjustment ball valve 11 carries out draining, closes total water intaking valve 10 after certain hour, and each flow electric control valve 11 finishes voltage-withstand test.
3) conventional flow Q3 test: after voltage-withstand test finishes, control system main frame sends and starts calibration instruction, total water intaking valve is opened in control, 10, conventional flow regulation ball valve 11, water meter 12 work to be measured, when waterflow stabilization, switching current enters in work graduated cylinder 7, synchronously carry out electronic weighing appliance 8 meterings and the metering of electronic water meter reading, while reaching electronics balance and weighing device 8 variable of setting, control system main frame provides actual metered value and the electronic water meter reading value in work graduated cylinder to carry out data processing comparison, simultaneously by the actual temperature value of temperature sensor 9 feedback test waters, by the shown weight of display device 2 of weighing, water temperature during test,
Different densities is scaled volume
the volume showing with water meter 12 to be measured compares, and draws error,
wherein at the beginning of △ table=V table-V, the error of indication of this water meter 12 to be measured during test point, opens the water in the conventional emptying conventional flow work graduated cylinder of flow control valve for this reason, closes conventional flow work graduated cylinder variable valve, finishes the detection of conventional flow.
4) if error amount exceeds setting range, by control system main frame 4, corresponding pulse value is set or the corresponding equivalent value of water meter is preset value after water meter production and assembly complete, finally compare, draw error, water meter to be measured 12 as occur overproof, can by the control panel on control system main frame 4 " check key " is proofreaied and correct, as test after extension set error display on be+2%, to he compensation-2%, if-3% to it compensation 3%, finally reach zero error.
5) boundary flow Q2 detects: after conventional flow detection finishes, control system main frame sends and starts calibration instruction, total water intaking valve 10 is opened in control, boundary flow regulation ball valve 11, water meter 12 work to be measured, when waterflow stabilization, switching current enters in work graduated cylinder 7, synchronously carry out electronic weighing appliance 8 meterings and the metering of electronic water meter reading, while reaching electronics balance and weighing device 8 variable of setting, control system main frame provides actual metered value and the electronic water meter reading value in work graduated cylinder to carry out data processing comparison, simultaneously by the actual temperature value of temperature sensor 9 feedback test waters, by the shown weight of display device 2 of weighing, water temperature during test, different densities is scaled volume
the volume showing with water meter 12 to be measured compares, and draws error,
wherein at the beginning of △ table=V table-V, the error of indication of this water meter 12 to be measured during test point, closes total water intaking valve for this reason, minimum flow regulates ball valve, open the water in the emptying boundary flow of boundary flow control valve work graduated cylinder, close boundary flow work graduated cylinder variable valve, finish the detection of boundary flow.
6) minimum flow Q1 detects: after boundary flow detection finishes, control system main frame sends and starts calibration instruction, total water intaking valve 10 is opened in control, minimum flow regulates ball valve 11, water meter 12 work to be measured, when waterflow stabilization, switching current enters in work graduated cylinder 7, synchronously carry out electronic weighing appliance 8 meterings and the metering of electronic water meter reading, while reaching electronics balance and weighing device 8 variable of setting, control system main frame provides actual metered value and the electronic water meter reading value in work graduated cylinder to carry out data processing comparison, simultaneously by the actual temperature value of temperature sensor 9 feedback test waters, by the shown weight of display device 2 of weighing, water temperature during test, different densities is scaled volume
the volume showing with water meter 12 to be measured compares, and draws error,
wherein at the beginning of △ table=V table-V, the error of indication of this water meter 12 to be measured during test point for this reason, close total water intaking valve, minimum flow regulates ball valve, open the water in the emptying minimum flow work of minimum flow regulating valve graduated cylinder, close minimum flow work graduated cylinder variable valve, finish the detection of minimum flow boundary flow.
7) as overproof in found, by control system main frame 4, corresponding pulse value is set or the corresponding equivalent value of water meter is preset value after water meter production and assembly complete, finally compare, draw error, water meter to be measured 12 as occur overproof, can by the control panel on control system main frame 4 " check key " is proofreaied and correct, as test after extension set error display on be+2%, to he compensation-2%, if-3% to it compensation ﹢ 3%, finally reach zero error.
8) complete verification, " reset " key by control system main frame, makes each operation valve get back to virgin state, prepares to carry out the detection of next round water meter to be measured.
Claims (3)
1. a full-automatic error checking correcting device for electronic water meter, is characterized in that comprising spinner-type flowmeter (1), the display device of weighing (2), error analysis processing extension set (3), control system main frame (4), five-pointed star line (5), water delivering orifice pressure transducer (6), work graduated cylinder (7), electronic weighing appliance (8), temperature sensor (9), water inlet pressure transducer (10), flow electrical ball valve (11), electric water meter to be measured (12), on water pipe on double-row type multi-epitope calibration worktable, be fixed with in turn water delivering orifice pressure transducer (6), a plurality of water meters to be measured (12), a plurality of flow electrical ball valves (11) one end, water inlet pressure transducer (10), temperature sensor (9), on double-row type multi-epitope calibration worktable, be fixed with a plurality of error analyses corresponding with a plurality of water meters to be measured (12) and process extension set (3), and corresponding connected one by one with five-pointed star line (5), a plurality of error analyses are processed extension set (3) and are connected with control system main frame (4) respectively, a plurality of flow electrical ball valves (11) other end is connected with work graduated cylinder (7) by spinner-type flowmeter (1) respectively, work graduated cylinder (7) bottom is provided with electronic weighing appliance (8), electronic weighing appliance (8) is connected with the display device of weighing (2).
2. the full-automatic error checking correcting device of a kind of electronic water meter according to claim 1, is characterized in that described water meter to be measured (12) is full-electronic water meter.
3. the full-automatic error checking correcting device of a kind of electronic water meter according to claim 1, it is characterized in that on the master control borad of described control system main frame (4), setting, exhaust, correction, initiating, reset function button are provided, can carry out water consumption, meter constant, flow velocity L/h, platform potential coefficient %, the setting of correction factor % parameter, complete corresponding verification correction operation.
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| CN201320613152.XU CN203479372U (en) | 2013-09-29 | 2013-09-29 | Full-automatic error correction checking device for electronic water meters |
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| CN201320613152.XU CN203479372U (en) | 2013-09-29 | 2013-09-29 | Full-automatic error correction checking device for electronic water meters |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487119A (en) * | 2013-09-29 | 2014-01-01 | 杭州竞达电子有限公司 | Full-automatic error correction checking device for electronic water meter and method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487119A (en) * | 2013-09-29 | 2014-01-01 | 杭州竞达电子有限公司 | Full-automatic error correction checking device for electronic water meter and method thereof |
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