CN204301821U - A kind of mass method/method of standard table tiny flow quantity water flow standard apparatus - Google Patents
A kind of mass method/method of standard table tiny flow quantity water flow standard apparatus Download PDFInfo
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- CN204301821U CN204301821U CN201420716556.6U CN201420716556U CN204301821U CN 204301821 U CN204301821 U CN 204301821U CN 201420716556 U CN201420716556 U CN 201420716556U CN 204301821 U CN204301821 U CN 204301821U
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Abstract
The utility model relates to mass method/method of standard table tiny flow quantity water flow standard apparatus.Comprise storage tank connects vacuum tank lower end by water pump, elevated tank connects vacuum tank, vacuum tank and elevated tank are connected to horizontal tested flowmeter respectively by electric switching valve and place before the tested table of pipeline on header, header parallel join two-way horizontal type telescopic device before tested table, the tested flowmeter of different bore is installed by horizontal type telescopic device, two-way horizontal type telescopic device to converge in before standard scale on header, before standard scale, the outlet of header is set side by side with the standard scale of the different bore in three tunnels, the accurate list catenation of three road signs is after standard scale on header, connect the vertical tested flowmeter of two-way by header after standard scale and place pipeline, the vertical tested flowmeter of two-way to be placed on pipeline by vertical expansion bend for installing tested flowmeter, the end that pipeline placed by the vertical tested flowmeter of two-way connects the steering gear being set side by side with the different bore in three tunnels, one delivery port of steering gear is corresponding with weighing container.
Description
Technical field
The utility model belongs to fluid flowmeter calibrating field, particularly relates to a kind of mass method/method of standard table tiny flow quantity water flow standard apparatus.
Background technology
The basic composition of existing water flow standard apparatus has water circulation system (pond, water pump, pressurizing vessel or water tower), gas-removing filter, experiment pipeline, expansion bend, standard scale or quality weighing system, commutator, on off control equipment and computer composition.On request tested flowmeter is installed on device, start said system, make the tested flowmeter of water flow path and flow working stamndard (electronic scale or standard scale), the tested flowmeter of simultaneously operating and flow working stamndard, output stream value relatively, the stability of water circulation system, the degree of accuracy of commutator, thus determine the accuracy of measuring and the repeatability of tested flowmeter.Complete the calibrating to tested flowmeter.But existing water flow standard apparatus has problems in the accuracy of measuring and repeatability.
Utility model content
For above shortcomings part in prior art, the purpose of this utility model is to provide water circulation system to stablize and the mass method that the degree of accuracy is high and anti-interference degree the is high/method of standard table tiny flow quantity water flow standard apparatus of flow working stamndard.
A kind of mass method/method of standard table tiny flow quantity water flow standard apparatus, this device comprises storage tank, vacuum tank, elevated tank, pipeline placed by horizontal tested flowmeter, pipeline placed by vertical tested flowmeter, wherein, storage tank is connected to the lower end of vacuum tank by a water pump, elevated tank is arranged on tested flowmeter and places 4 ~ 6m place above pipeline, the water inlet pipe of elevated tank connects vacuum tank by electric switching valve, the outlet pipe of vacuum tank and the outlet pipe of elevated tank are connected to horizontal tested flowmeter respectively by electric switching valve and place before the tested table of pipeline on header, header parallel join two-way horizontal type telescopic device before tested table, the tested flowmeter of different bore is installed by horizontal type telescopic device, two-way horizontal type telescopic device to converge in before standard scale on header respectively by manual modulation valve, before standard scale, the outlet of header is set side by side with the standard scale of the different bore in three tunnels, the delivery port of three road standard scales to be connected to after standard scale on header, connect the vertical tested flowmeter of two-way by header after standard scale and place pipeline, the vertical tested flowmeter of two-way to be placed on pipeline by vertical expansion bend for installing tested flowmeter, the end that pipeline placed by the vertical tested flowmeter of two-way is connected with header before an electronic scale, before electronic scale, the outlet of header is set side by side with the steering gear of the different bore in three tunnels, electric switching valve is provided with between header before steering gear and electronic scale, one delivery port of steering gear is corresponding with weighing container, weighing container is arranged on electronic scale.
Further, electronic scale periphery arranges windproof outer cover, and weighing container is designed to liquidproof Steaming structure.
Further, the bore of three steering gears is respectively 4mm, 10mm and 15mm.
Further, the bore of three road standard scales is 2mm, 10mm, 15mm respectively.
Further, water pump controls rotating speed by a frequency changer circuit.
Compared with prior art, beneficial effect is the utility model:
1, adopt elevated tank originally in the utility model, when low discharge, avoid the current adopting separately vacuum tank to cause unstable, occur the problem of swimming.
2, adopt the utility model, by selecting electric switching valve, select different paths, make to detect the measurement realizing multi-path polytypic flowmeter, and the degree of accuracy of the stability of water circulation system and flow working stamndard and anti-interference degree being improved.
3, the confirmation that effect is carried out in three groups of experiments has been done in the utility model:
A, with 50L vacuum tank coordinate DN15 commutator (bore is 15mm), calibrating flow be 0.5 ~ 10 point in 1 ~ 16.67L/min, calibrating time, its device discharge stability is better than 0.1%;
B, with 50L vacuum tank coordinate DN10 commutator (bore is 10mm), calibrating flow be 1 ~ 12 point in 0.0083 ~ 0.1L/min, calibrating time.Its device discharge stability is better than 0.1%;
C, use 50L vacuum tank series connection 20L elevated tank coordinate the pneumatic commutator of DN2 oscillating nozzle formula, and calibrating flow is 1 ~ 12 point in 0.16 ~ 0.0016L/min, calibrating time.Its its device discharge stability is better than 0.05%;
The precision of voltage regulation of vacuum tank is generally 0.1%, the precision of voltage regulation of elevated tank generally also can reach 0.05%, be generally the pressurizing vessel of 0.1% with the precision of voltage regulation for one-level source of stable pressure, then precision of pressurizeing to be generally 0.05% elevated tank be secondary voltage stabilizing, the overall precision of voltage regulation can be improved.
Accompanying drawing explanation
Fig. 1 is the apparatus structure simplified schematic diagram that the utility model embodiment provides;
Fig. 2 is the apparatus structure schematic front view that the utility model embodiment provides;
Fig. 3 is the apparatus structure diagrammatic top view that the utility model embodiment provides;
Wherein, 1 is storage tank, 2 is switch valve, 3 is filter, 4 is water pump, 5 is check-valves, 6 is electronic scale bracket, 7 is vacuum tank, 8 is elevated tank, 9 is electric switching valve, 10 is tested flowmeter, 11 is horizontal type telescopic device, 12 is standard scale, 13 is manual modulation valve, 14 is vertical expansion bend, 15 is commutator, 16 is weighing container, 17 is articulation, 18 is expansion bend support, 19 is relief tube, 20 is flexible coupling, 21 is outlet pipe, 22 for being picked up the front header of table, 23 is interchangeable straight length before table, 24 is interchangeable flange, 25 is header before standard scale, 26 is header after standard scale, 27 is header before electronic scale.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Embodiment
As shown in Figures 1 to 3, a kind of mass method/method of standard table tiny flow quantity water flow standard apparatus, this device comprises storage tank 1, vacuum tank 7, elevated tank 8, pipeline placed by horizontal tested flowmeter, pipeline placed by vertical tested flowmeter, wherein, the delivery port of storage tank 1 connects a water pump 4 by switch valve 2 and filter 3, water pump junction adopts around property joint 20, water pump 4 is connected to the lower end of vacuum tank 7 by check-valves 5, vacuum tank 7 forms loop by a relief tube 19 with storage tank, relief tube 19 arranges electric switching valve 9, elevated tank 8 is arranged on tested flowmeter and places 5m place above pipeline, the water inlet pipe of elevated tank 8 connects vacuum tank 7 by an electric switching valve, upper water is carried out by vacuum tank 7, the outlet pipe 21 of vacuum tank 7 and the outlet pipe of elevated tank 8 are connected to horizontal tested flowmeter respectively by electric switching valve and place before the tested table of pipeline on header 22, two-way is divided into by header 22 before tested table, two line structures are identical, each road all controls respectively by an electric switching valve, for a road, first be connected with the front interchangeable straight length 23 of table, before table, the other end of interchangeable straight length 23 is connected with interchangeable flange 24, the telescopic end of one horizontal type telescopic device 11 is provided with interchangeable flange, between two interchangeable flanges, tested flowmeter 10 is installed, header 25 before connection standard table after the delivery port connection electric switching valve of tested flowmeter 10, three tunnels are divided into by header before standard scale 25, each Lu Zhongjun is by electric switching valve connection standard table 12.In the present embodiment, the bore of three road standard scales is 2mm, 10mm, 15mm respectively, meets the measurement that model is the flowmeter between DN2 ~ DN10.
Three road standard scales 12 are respectively by header 26 after manual modulation valve 13 connection standard table, pipeline placed by the vertical tested flowmeter that after standard scale, header 26 connects two-way arranged side by side, the tested flowmeter 10 pipeline connecting respectively different bore placed by the vertical tested flowmeter of two-way, tested flowmeter 10 is fixed by pneumatic vertical expansion bend 14, pneumatic vertical expansion bend 14 is arranged on expansion bend support 18, header 27 before the rear end connection electronic scale of the vertical tested flowmeter placement pipeline that two-way is arranged side by side, before electronic scale, header 27 offers three way outlets, three way outlets arrange electric switching valve respectively, by electric switching valve respectively by articulation 17 and the steering gear 15 being connected the different bores corresponding from tested flowmeter by articulation 28 with pvc flexible pipe 17, the corresponding corresponding electronic scale 16 of one road delivery port of the steering gear 15 of different bore, another road delivery port aims at storage tank 1, .The delivery port diameter of three steering gears 15 is respectively 4mm, 10mm and 15mm.
Water pump controls rotating speed by frequency changer circuit.The switch of all electric switching valves in device is controlled by computer control system.
The course of work in the present embodiment is: by water pump 4, by the water suction vacuum tank 7 in storage tank 1, (wherein flexible coupling 20 is that water pump damping is used.Check-valves for protection water pump with) again by outlet pipe 21, enter picked up table before header, the front interchangeable straight length of table, interchangeable flange pass through again " tested flowmeter " horizontal type telescopic device (the tested flowmeter of clamping) open electric switching valve before 9 standard scales header to standard scale; Regulate manual adjustments valve regulating flow size.Again to header, pvc flexible pipe before header, electronic scale after standard scale to commutator.Entering weighing container 16 makes commutator action that water is flow back to storage tank 11 by a point bucket to set volume (signal gathered by PLC); Gather tested flowmeter volume simultaneously, the density of water is measured again by the weight that electronic scale weighing enters water in weighing container 16, be converted into volume and tested flowmeter volumetric ratio comparatively, the degree of accuracy of tested flowmeter is calculated by software, complete and once examine and determine operation, electronic scale is arranged on the electronic scale bracket 6 of storage tank.
In the present embodiment, can detect for the flowmeter of different model bore, detected flowmeter can be DN10, DN8, DN6, DN4 and DN2, when the horizontal detection of needs, the pneumatic vertical expansion bend of two-way adopts pipeline to connect, when needs vertical check, two-way horizontal type telescopic device adopts pipeline to connect, when detecting, by controlling the selection of electrically operated valve realization to path.
Such as, detected flowmeter bore is 10mm, adopt vertical detection, now, two-way horizontal type telescopic device adopt pipeline to connect, by controlling electric switching valve, according to the difference of calibrating flow, change different patterns, independent employing vacuum tank or elevated tank, or adopt the form of vacuum tank or elevated tank combination, and according to the requirement of flow control electric switching valve to three road standard scales and selected by the carrying out of steering gear select, done the contrast that effect is carried out in three groups of experiments in the present embodiment:
A, with 50L vacuum tank coordinate DN15 commutator (bore is 15mm), calibrating flow be 0.5 ~ 10 point in 1 ~ 16.67L/min, calibrating time, its device discharge stability is better than 0.1%;
B, with 50L vacuum tank coordinate DN10 commutator (bore is 10mm), calibrating flow be 1 ~ 12 point in 0.0083 ~ 0.1L/min, calibrating time.Its device discharge stability is better than 0.1%;
C, use 50L vacuum tank series connection 20L elevated tank coordinate the pneumatic commutator of DN2 oscillating nozzle formula, and calibrating flow is 1 ~ 12 point in 0.16 ~ 0.0016L/min, calibrating time.Its device discharge stability is better than 0.05%;
The precision of voltage regulation of vacuum tank is generally 0.1%, the precision of voltage regulation of elevated tank generally also can reach 0.05%, be generally the pressurizing vessel of 0.1% with the precision of voltage regulation for one-level source of stable pressure, then precision of pressurizeing to be generally 0.05% elevated tank be secondary voltage stabilizing, the overall precision of voltage regulation can be improved.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. mass method/method of standard table tiny flow quantity water flow standard apparatus, it is characterized in that, this device comprises storage tank, vacuum tank, elevated tank, pipeline placed by horizontal tested flowmeter, pipeline placed by vertical tested flowmeter, wherein, storage tank is connected to the lower end of vacuum tank by a water pump, elevated tank is arranged on tested flowmeter and places 4 ~ 6m place above pipeline, the water inlet pipe of elevated tank connects vacuum tank by electric switching valve, the outlet pipe of vacuum tank and the outlet pipe of elevated tank are connected to horizontal tested flowmeter respectively by electric switching valve and place before the tested table of pipeline on header, header parallel join two-way horizontal type telescopic device before tested table, the tested flowmeter of different bore is installed by horizontal type telescopic device, two-way horizontal type telescopic device to converge in before standard scale on header respectively by manual modulation valve, before standard scale, the outlet of header is set side by side with the standard scale of the different bore in three tunnels, the delivery port of three road standard scales to be connected to after standard scale on header, connect the vertical tested flowmeter of two-way by header after standard scale and place pipeline, the vertical tested flowmeter of two-way to be placed on pipeline by vertical expansion bend for installing tested flowmeter, the end that pipeline placed by the vertical tested flowmeter of two-way is connected with header before an electronic scale, before electronic scale, the outlet of header is set side by side with the steering gear of the different bore in three tunnels, electric switching valve is provided with between header before steering gear and electronic scale, one delivery port of steering gear is corresponding with weighing container, weighing container is arranged on electronic scale.
2., according to mass method according to claim 1/method of standard table tiny flow quantity water flow standard apparatus, it is characterized in that, electronic scale periphery arranges windproof outer cover, and weighing container is designed to liquidproof Steaming structure.
3., according to mass method according to claim 1/method of standard table tiny flow quantity water flow standard apparatus, it is characterized in that, the bore of three steering gears is respectively 4mm, 10mm and 15mm.
4. according to mass method according to claim 1/method of standard table tiny flow quantity water flow standard apparatus, it is characterized in that, the bore of three road standard scales is 2mm, 10mm, 15mm respectively.
5. according to mass method according to claim 1/method of standard table tiny flow quantity water flow standard apparatus, it is characterized in that, water pump controls rotating speed by a frequency changer circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420716556.6U CN204301821U (en) | 2014-11-25 | 2014-11-25 | A kind of mass method/method of standard table tiny flow quantity water flow standard apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420716556.6U CN204301821U (en) | 2014-11-25 | 2014-11-25 | A kind of mass method/method of standard table tiny flow quantity water flow standard apparatus |
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| CN204301821U true CN204301821U (en) | 2015-04-29 |
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| CN201420716556.6U Withdrawn - After Issue CN204301821U (en) | 2014-11-25 | 2014-11-25 | A kind of mass method/method of standard table tiny flow quantity water flow standard apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482994A (en) * | 2014-11-25 | 2015-04-01 | 丹东科泰仪器仪表有限公司 | Mass method/standard meter method micro-flow water flow standard device |
| CN105181087A (en) * | 2015-08-31 | 2015-12-23 | 苏州东剑智能科技有限公司 | Ultrasonic water meter metrological characteristics detection device and detection method thereof |
| CN109405937A (en) * | 2018-12-26 | 2019-03-01 | 浙江省计量科学研究院 | A kind of wide-range is than the method that water meter verifies standard set-up and its water meter verification |
-
2014
- 2014-11-25 CN CN201420716556.6U patent/CN204301821U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482994A (en) * | 2014-11-25 | 2015-04-01 | 丹东科泰仪器仪表有限公司 | Mass method/standard meter method micro-flow water flow standard device |
| CN104482994B (en) * | 2014-11-25 | 2017-07-28 | 丹东科泰仪器仪表有限公司 | A kind of mass method/method of standard table tiny flow quantity water flow standard apparatus |
| CN105181087A (en) * | 2015-08-31 | 2015-12-23 | 苏州东剑智能科技有限公司 | Ultrasonic water meter metrological characteristics detection device and detection method thereof |
| CN109405937A (en) * | 2018-12-26 | 2019-03-01 | 浙江省计量科学研究院 | A kind of wide-range is than the method that water meter verifies standard set-up and its water meter verification |
| CN109405937B (en) * | 2018-12-26 | 2024-04-30 | 浙江省计量科学研究院 | Wide-range ratio water meter calibration standard device and water meter calibration method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150429 Effective date of abandoning: 20170728 |
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| AV01 | Patent right actively abandoned |