CN206556731U - Gas flowmeter calibration system - Google Patents
Gas flowmeter calibration system Download PDFInfo
- Publication number
- CN206556731U CN206556731U CN201720116358.XU CN201720116358U CN206556731U CN 206556731 U CN206556731 U CN 206556731U CN 201720116358 U CN201720116358 U CN 201720116358U CN 206556731 U CN206556731 U CN 206556731U
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- flowmeter
- gas
- blower fan
- calibrated
- calibration system
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Abstract
The utility model is related to measurement of gas flow field.The utility model discloses a kind of gas flowmeter calibration system, including proving flowmeter, blower fan, surge tank, proving flowmeter, blower fan, surge tank, flowmeter interface are sequentially connected, when when flowmeter interface installs flowmeter to be calibrated, flowmeter to be calibrated, blower fan, surge tank, flowmeter to be calibrated are linked to be gas flow cycle, the gas flow cycle connects with air supply source and is provided with valve in the connectivity part, and the proving flowmeter, blower fan, flowmeter to be calibrated are connected with control system respectively.By the rotation of blower fan, drive air to be flowed, air is circulated in the duct, form circulation, lasting, stable air-flow, allow gas to enough recyclings.
Description
Technical field
The utility model is related to measurement of gas flow field, and in particular to a kind of Flow Meter's Demarcation.
Background technology
Gas flowmeter is all largely used in Chemical Manufacture and experimental implementation, right with the development of modern science technology
More and more high in the technical requirements of process control, the accurate metering especially in continuous-flow system has become production and tested
Highly important technical problem in work.Flowmeter is metering fluid flow, the important instrument of flow velocity, and their degree of accuracy is direct
The measurement problem of fluid is influenceed, therefore, needs to carry out demarcation check and correction to flowmeter under many circumstances.
The demarcation of gas flowmeter typically uses volumetric method, weight method and proving flowmeter method.Wherein proving flowmeter method
It is on the basis of proving flowmeter, to be compared to calibrated flow meter with being corrected flowmeter, concrete operations are by normal flow
Meter and flowmeter to be calibrated series connection, read proving flowmeter and are calibrated the scale or flow of flowmeter respectively, then obtain by
The calibration curve or updating formula of proving flowmeter.
The environment for the unipath non-closed that existing gas flowmeter demarcation is used is operated at present, i.e., gas passes through
The mode directly discharged after test pipe is demarcated, and is caused to recycle for the gas of demarcation, is caused gas
Source is wasted.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of gas flowmeter calibration system for saving source of the gas.
In order to solve above-mentioned problem of the prior art, the utility model is realized using following technical scheme：
The utility model gas flowmeter calibration system, including proving flowmeter, blower fan, surge tank, proving flowmeter, wind
Machine, surge tank, flowmeter interface are sequentially connected, when flowmeter interface install flowmeter to be calibrated when flowmeter to be calibrated,
Blower fan, surge tank, flowmeter to be calibrated are linked to be gas flow cycle, and the gas flow cycle is connected with air supply source and in the connection
Place is provided with valve, and the proving flowmeter, blower fan, flowmeter to be calibrated are connected with control system respectively.By the rotation of blower fan,
Drive the gas for entering gas flow cycle to be flowed, gas is circulated in the duct, formation circulation, lasting,
Stable air-flow, allows gas to enough recyclings, it is not necessary to repeat air inlet, control system gathers proving flowmeter, wind respectively
Machine, the signal of flowmeter to be calibrated transmission, the calibration curve or updating formula of flowmeter are calibrated by being obtained after analysis, by
This treats proving flowmeter and demarcated.If in gas flow cycle during pressure instantaneous variation, the pressure change in surge tank
Very small, surge tank can play cushioning effect, and mutation will not be produced by being thus easily controlled surge tank outlet or inlet pressure,
So as to slow down the moment impact of pressure.
Gas flow cycle is provided with the inlet channel and outlet passageway connected with ambient atmosphere, the inlet channel and set
There is air intake valve, the outlet passageway is provided with outlet valve.
The air intake valve and outlet valve are ball valve.
The gas flow cycle is provided with gas-filtering device.Gas-filtering device, which can be filtered out, flows gas in pipeline
The impurity of body, to prevent producing influence to impurity to gas flowmeter.
The inlet channel, outlet passageway, it is calibrated flowmeter, proving flowmeter, blower fan, gas-filtering device, buffering
Tank joins end to end successively.The gas flowmeter calibration system demarcation best results connected and composed in the order described above.
The blower fan is Roots blower.The vibration of Roots blower is small, and noise is low, and service life is long, blower fan volume profit
Big with rate, mounting means is flexible and changeable, can continuously run for a long time, is adapted to use in above-mentioned circulation loop.
The surge tank is that volume specification is 1m3Surge tank.
The control system includes controller and the host computer being connected with controller.The host computer refers to can be direct
The computer of manipulation order is sent, pre-set order, slave computer is passed to by order by operating.Controller is used to adopt
Collect the data on flows of proving flowmeter and flowmeter to be calibrated, controller is the data transfer collected to host computer, host computer
The calibration curve or updating formula for being calibrated flowmeter are resulted in by software program.
The controller is PLC control cabinet.Man-machine interaction is realized by the program in PLC control cabinet control, host computer, it is right
Flowmeter to be calibrated is demarcated and examined and determine.
The utility model is that the gas for demarcation being capable of the circulation of gas flow cycle relative to the advantage of prior art
Circulation, has thus saved the gas for demarcating, it is to avoid introduce new gas repeatedly so that calibration system is more stablized.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in figure 1, the utility model gas flowmeter calibration system, including proving flowmeter 1, blower fan 3, surge tank 4,
Proving flowmeter 1, blower fan 3, surge tank 4, flowmeter interface 210 are sequentially connected, when installation is to be calibrated at flowmeter interface 210
Flowmeter 2 to be calibrated, blower fan 3, surge tank 4, flowmeter to be calibrated 2 are linked to be gas flow cycle during flowmeter 2, gas circulation
Loop connects with air supply source and is provided with valve in the connectivity part, and the proving flowmeter 1, blower fan 3, flowmeter to be calibrated 2 are distinguished
It is connected with control system.Wherein control system includes controller 5 and the host computer 6 being connected with controller 5.Gas flow cycle
Provided with the inlet channel 81 and outlet passageway 82 connected with ambient atmosphere, the inlet channel 81 is provided with air intake valve 810,
The outlet passageway 82 is provided with outlet valve 820.The air intake valve 810 and outlet valve 820 are ball valve.The gas
Flow cycle is provided with gas-filtering device 7.The inlet channel 81, outlet passageway 82, flowmeter to be calibrated 2, normal flow
Meter 1, blower fan 3, gas-filtering device 7, surge tank 4 join end to end successively.It is preferred that the blower fan 3 is Roots blower 3.It is preferred that institute
It is that volume specification is 1m to state surge tank 43Surge tank 4.It is preferred that the controller 5 is PLC control cabinet.
Application method of the present utility model is as follows：The air intake valve 820 on outlet passageway 82 is first shut off, air inlet is opened and leads to
Air intake valve 810 on road 81, starts blower fan 3, and gas is entered in pipeline by inlet channel 81 and started the cycle over, and gas is in gas
Filtered in the presence of body filter 7, air intake valve 810 is closed when reaching pressure set in advance, passes through controller 5
Control blower fan 3 rotates the flow for reaching and needing to demarcate, material is thus formed circulation, and program in host computer 6 is to the mark that collects
The data on flows of quasi- flowmeter 1 and flowmeter to be calibrated 2 is handled, and then obtains being calibrated calibration curve or the school of flowmeter
Positive formula, is achieved in treating the demarcation of proving flowmeter 2.
Claims (9)
1. gas flowmeter calibration system, including proving flowmeter (1), blower fan (3), surge tank (4), it is characterised in that standard
Flowmeter (1), blower fan (3), surge tank (4), flowmeter interface (210) are sequentially connected, and are installed when at flowmeter interface (210) place
Flowmeter (2) to be calibrated, blower fan (3), surge tank (4), flowmeter to be calibrated (2) are linked to be gas stream during flowmeter (2) to be calibrated
Logical loop, the gas flow cycle connects with air supply source and is provided with valve, the proving flowmeter (1), blower fan in the connectivity part
(3), flowmeter (2) to be calibrated is connected with control system respectively.
2. gas flowmeter calibration system as claimed in claim 1, it is characterised in that gas flow cycle is provided with and the external world
The inlet channel (81) and outlet passageway (82) of atmosphere, the inlet channel (81) are provided with air intake valve (810), described
Outlet passageway (82) is provided with outlet valve (820).
3. gas flowmeter calibration system as claimed in claim 2, it is characterised in that the air intake valve (810) and outlet
Valve (820) is ball valve.
4. gas flowmeter calibration system as claimed in claim 2, it is characterised in that the gas flow cycle is provided with gas
Body filter (7).
5. gas flowmeter calibration system as claimed in claim 4, it is characterised in that the inlet channel (81), outlet lead to
Road (82), flowmeter to be calibrated (2), proving flowmeter (1), blower fan (3), gas-filtering device (7), surge tank (4) are first successively
Tail is connected.
6. gas flowmeter calibration system as claimed in claim 1, it is characterised in that the blower fan (3) is Roots blower.
7. gas flowmeter calibration system as claimed in claim 1, it is characterised in that the surge tank (4) is volume specification
For 1m3Surge tank (4).
8. gas flowmeter calibration system as claimed in claim 1, it is characterised in that the control system includes controller
(5) host computer (6) and with controller (5) being connected.
9. gas flowmeter calibration system as claimed in claim 8, it is characterised in that the controller (5) controls for PLC
Cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720116358.XU CN206556731U (en) | 2017-02-08 | 2017-02-08 | Gas flowmeter calibration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720116358.XU CN206556731U (en) | 2017-02-08 | 2017-02-08 | Gas flowmeter calibration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206556731U true CN206556731U (en) | 2017-10-13 |
Family
ID=60010633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720116358.XU Active CN206556731U (en) | 2017-02-08 | 2017-02-08 | Gas flowmeter calibration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206556731U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110421255A (en) * | 2019-06-27 | 2019-11-08 | 上海柏楚电子科技股份有限公司 | A kind of method of Fast Calibration cutting air pressure |
| CN110470800A (en) * | 2019-08-27 | 2019-11-19 | 武汉科技大学 | A kind of air distribution system and method for NOx sensor calibration |
| CN114440133A (en) * | 2021-12-17 | 2022-05-06 | 河南平高电气股份有限公司 | For SF6Monitoring module of inflation and deflation recovery device and flow meter deviation rectifying method |
-
2017
- 2017-02-08 CN CN201720116358.XU patent/CN206556731U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110421255A (en) * | 2019-06-27 | 2019-11-08 | 上海柏楚电子科技股份有限公司 | A kind of method of Fast Calibration cutting air pressure |
| CN110470800A (en) * | 2019-08-27 | 2019-11-19 | 武汉科技大学 | A kind of air distribution system and method for NOx sensor calibration |
| CN110470800B (en) * | 2019-08-27 | 2022-08-16 | 武汉科技大学 | Gas distribution system and method for nitrogen oxide sensor calibration |
| CN114440133A (en) * | 2021-12-17 | 2022-05-06 | 河南平高电气股份有限公司 | For SF6Monitoring module of inflation and deflation recovery device and flow meter deviation rectifying method |
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