CN203745049U - Calibration device of gas precision flow meter - Google Patents
Calibration device of gas precision flow meter Download PDFInfo
- Publication number
- CN203745049U CN203745049U CN201320878540.0U CN201320878540U CN203745049U CN 203745049 U CN203745049 U CN 203745049U CN 201320878540 U CN201320878540 U CN 201320878540U CN 203745049 U CN203745049 U CN 203745049U
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- flowmeter
- flow meter
- proving
- proving flowmeter
- valve
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Abstract
The utility model discloses a calibration device of a gas precision flow meter. The calibration device comprises a pressure reducing valve, the pressure reducing valve is connected with a gas inlet valve, the gas inlet valve is connected with a calibrated flow meter, a manifold pressure gauge is arranged between the gas inlet valve and the calibrated flow meter, the calibrated flow meter is connected with a standard flow meter, an intermediate pressure gauge is arranged between the calibrated flow meter and the standard flow meter, and the standard flow meter is connected with a vent valve. The calibration device of the gas precision flow meter can greatly reduce waste materials generated in production and reduce manpower and material resource cost required in equipment maintenance.
Description
Technical field
The utility model relates to a kind of flowmeter prover, relates in particular to a kind of caliberating device of gas precision flowmeter.
Background technology
Since polyoxymethylene is gone into operation, boron trifluoride flow meter from being blocked, fluctuation directly restriction Zhe Wo company are produced, and it is throat portion, the catalyzer in boron trifluoride prestige polyreaction, and the accurate measurement direct relation of boron trifluoride instrument the quality of POM product.BROOKS Brooks Co., Ltd of U.S. thermal mass flow meter is the product designing in order to meet the requirement to measuring accuracy, repeatability and control aspect in relevant technological process.It and traditional volumetric flow rate instrument are completely different, and BROOKS mass flowmeter carrys out measuring flow by the specific heat of tested gas, the impact that not changed by temperature, pressure.Therefore this product all has higher precision under various working environment.Measured flux can be designed to quality or volume unit.The error of polymerization technique staff response boron trifluoride in R-400 charging robot control system(RCS) is large, has fluctuation, causes kneader material reaction temperature accurately not control, and has had a strong impact on properties of product.
Utility model content
Technical problem to be solved in the utility model is the caliberating device that proposes a kind of gas precision flowmeter for the defect existing in background technology.
For solving the problems of the technologies described above, the utility model is by the following technical solutions: the caliberating device of gas precision flowmeter of the present utility model, comprise reduction valve, described reduction valve is connected with air intake valve, air intake valve be connected by proving flowmeter, air intake valve and be provided with boost gauge between proving flowmeter, is connected with proving flowmeter by proving flowmeter, in the middle of proving flowmeter and proving flowmeter, be provided with intermediate pressure table, proving flowmeter is connected with atmospheric valve.
Described normal flow is counted mass flowmeter.
Describedly be provided with signal generator and digital display instrument by proving flowmeter, proving flowmeter is provided with signal generator and digital display instrument.
The beneficial effects of the utility model: after the research and development and application of the gas precision flowmeter of this utility model, boron trifluoride flowmeter flow range is 0-500g/ hour, fundamental error verification: be that under 0%, 25%, 50%, 75%, 100% aperture, flow is respectively 0,125,250,375,500 in valve opening; Flowmeter class of accuracy after maintenance is 0.05, has ensured the stable operation of R-400, greatly reduces in production and produces waste material, has reduced the required manpower and materials cost of plant maintenance.
Brief description of the drawings
Fig. 1 is device schematic diagram of the present utility model.
Embodiment
As shown in Figure 1, a kind of caliberating device of gas precision flowmeter, comprise reduction valve 1, described reduction valve 1 is connected with air intake valve 9, air intake valve 9 be connected by proving flowmeter 3, air intake valve 9 and be provided with boost gauge 2 between proving flowmeter 3, be connected with standard quality flowmeter 5 by proving flowmeter 3, by the middle intermediate pressure table 4 that is provided with of proving flowmeter 3 and standard quality flowmeter 5, standard quality flowmeter 5 is connected with atmospheric valve 6, be provided with signal generator 8 and digital display instrument 7 by proving flowmeter 3, standard quality flowmeter 5 is provided with signal generator 10 and digital display instrument 11.
The caliberating device of gas precision flowmeter of the present utility model is taking nitrogen as demarcating medium, by proving flowmeter 3 before system, the posterior proceeding measurement control methods of proving flowmeter 5, give proving flowmeter 5 full gates with signal generator 10, by proving flowmeter 3 respectively acknowledge(ment) signal generator 8 send 0%, 25%, 50%, 75%, after 100% aperture, digital display instrument 7 display standard flowmeters 5 with by proving flowmeter 3 flow numbers, record is by proving flowmeter 5 and proving flowmeter flow 3 numerical value, calculated difference, difference is in by 5% flow range of proving flowmeter 3, determine by proving flowmeter 3 clean maintenance qualified, this scaling method divides following several unit:
1, give system power supply, for 24V power supply, to proving flowmeter, powered by proving flowmeter, digital display instrument, opening signal generator, now checks that each instrument power supply shows normal.
2, open nitrogen reduction valve, pressure is adjusted to 0.5Mpa and checks whether inlet pressure gauge is 0.5Mpa, now confirms that intermediate pressure table is designated as 0Mpa.
3, open proving flowmeter (or normal flow display instrument) with signal generator, now proving flowmeter signal is 20mA, and the flowmeter that settles the standard (or normal flow display instrument) is full-gear.
4, give respectively by proving flowmeter 0%, 25%, 50%, 75%, 100% aperture with signal generator, corresponding driving signal is 4mA, 8mA, 12mA, 16mA, 20mA.Record respectively the flow indication value at digital display instrument 0%, 25%, 50%, 75%, 100% by proving flowmeter and proving flowmeter.
5, calculate respectively by proving flowmeter and proving flowmeter in 0%, 25%, 50%, 75%, 100% difference, difference respectively in the error of 0%, 25%, 50%, 75%, 100% each point all in by the scope of proving flowmeter 5%, confirm to be cleaned maintenance by proving flowmeter qualified.
Claims (3)
1. the caliberating device of a gas precision flowmeter, comprise reduction valve, it is characterized in that: described reduction valve is connected with air intake valve, air intake valve be connected by proving flowmeter, air intake valve and be provided with boost gauge between proving flowmeter, be connected with proving flowmeter by proving flowmeter, in the middle of proving flowmeter and proving flowmeter, be provided with intermediate pressure table, proving flowmeter is connected with atmospheric valve.
2. the caliberating device of gas precision flowmeter according to claim 1, is characterized in that: described normal flow is counted mass flowmeter.
3. the caliberating device of gas precision flowmeter according to claim 1, is characterized in that: be describedly provided with signal generator and digital display instrument by proving flowmeter, proving flowmeter is provided with signal generator and digital display instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320878540.0U CN203745049U (en) | 2013-12-30 | 2013-12-30 | Calibration device of gas precision flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320878540.0U CN203745049U (en) | 2013-12-30 | 2013-12-30 | Calibration device of gas precision flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203745049U true CN203745049U (en) | 2014-07-30 |
Family
ID=51344836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320878540.0U Expired - Fee Related CN203745049U (en) | 2013-12-30 | 2013-12-30 | Calibration device of gas precision flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203745049U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106595953A (en) * | 2016-12-21 | 2017-04-26 | 杭州依技设备成套工程有限公司 | Medical oxygen metering instrument metering standard device |
| CN109506743A (en) * | 2018-11-23 | 2019-03-22 | 河北宏龙环保科技有限公司 | Flowmeter on-line proving device and scaling method |
-
2013
- 2013-12-30 CN CN201320878540.0U patent/CN203745049U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106595953A (en) * | 2016-12-21 | 2017-04-26 | 杭州依技设备成套工程有限公司 | Medical oxygen metering instrument metering standard device |
| CN106595953B (en) * | 2016-12-21 | 2019-01-29 | 杭州依技设备成套工程有限公司 | Medical oxygen class measurement instrument metrological standard unit |
| CN109506743A (en) * | 2018-11-23 | 2019-03-22 | 河北宏龙环保科技有限公司 | Flowmeter on-line proving device and scaling method |
| CN109506743B (en) * | 2018-11-23 | 2020-06-30 | 河北宏龙环保科技有限公司 | Flowmeter online calibration device and calibration method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 Termination date: 20141230 |
|
| EXPY | Termination of patent right or utility model |