CN109708707A - A kind of gas flow surveying instrument and measurement method - Google Patents
A kind of gas flow surveying instrument and measurement method Download PDFInfo
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- CN109708707A CN109708707A CN201910127035.4A CN201910127035A CN109708707A CN 109708707 A CN109708707 A CN 109708707A CN 201910127035 A CN201910127035 A CN 201910127035A CN 109708707 A CN109708707 A CN 109708707A
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- 239000007788 liquid Substances 0.000 claims abstract description 59
- 238000001514 detection method Methods 0.000 claims abstract description 19
- 238000005259 measurement Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000004907 flux Effects 0.000 abstract description 2
- 230000001186 cumulative effect Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
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- 238000005272 metallurgy Methods 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
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Abstract
A kind of gas flow surveying instrument and measurement method, it is related to fluid flux measurement technology field, the measuring device includes the first closed container for filling liquid, the second closed container, drain line, air inlet pipeline, outlet pipe, bypass line and liquid level detection device；Ullage region of the air inlet pipeline for into first closed container is passed through pressure-sustaining gas, and the pressure-sustaining gas is insoluble with the liquid；The outlet pipe is connected on second closed container；The bypass line is connected to ullage region and second closed container in first closed container；One end of the drain line is located at the inside of liquid in first closed container, and the other end is located in second closed container；The liquid level detection device is used to detect the liquid level in first closed container or the second closed container.The measuring device of the embodiment of the present application can measure the flow and flow rate of the gas of micrometeor, and measurement accuracy is high, range is big.
Description
Technical field
This application involves fluid flux measurement technology fields, and in particular to a kind of gas flow surveying instrument and measurement side
Method.
Background technique
Indoor scientific experiment, it is often necessary to a kind of to be able to satisfy that measurement accuracy is high, range is big, micrometeor flowmeter.
Some flowmeters, energy micrometer flow, range is small；Range is big, does not survey micrometeor.To the physics of fluid being measured
Characteristic and measurement environment have many requirements, and if differential pressure flowmeter needs longer straight pipe, throttling set is connect with display instrument
Place is also easy to produce leakage, and measurement accuracy is higher；Vortex-shedding meter for fluids such as low static pressure, low flow velocity, low-density and high viscositys not
It is applicable in；Electromagnetic flowmeter is not capable of measuring the low petroleum product of conductivity, is not capable of measuring gas, steam and the liquid containing larger bubble
Body；Suspended body flowmeter is resistance to be forced down, anti-electromagnetic interference capability is low；(such as gear meter, turns blade flowmeter fixed displacement flowmeter
Subflow meter, piston meter etc.) precision influenced by the abrasion of environment temperature, fluid viscosity and transmission parts；Turbine flow
The physical property for counting surveyed fluid has larger impact to discharge characteristic, cannot keep calibration characteristics, for a long time；Ultrasonic flowmeter caliber
It is too small, it is not capable of measuring micrometeor；Mass flowmenter is not capable of measuring low-pressure gas, and liquid air content height can not accurately measure.
Summary of the invention
At least one to solve above-mentioned technical problem, the embodiment of the application provides a kind of gas flow surveying instrument,
Including fill the first closed container of liquid, the second closed container, drain line, air inlet pipeline, outlet pipe, bypass line and
Liquid level detection device；Ullage region of the air inlet pipeline for into first closed container is passed through pressure-sustaining gas,
The pressure-sustaining gas is insoluble with the liquid；The outlet pipe is connected on second closed container；The bypass line
The ullage region being connected in first closed container and second closed container；One end of the drain line is located at
The inside of liquid in first closed container, the other end are located in second closed container；The liquid level detection device is used
Liquid level in detection first closed container or the second closed container；The air inlet pipeline, bypass line, drain line and
The first valve, the second valve, third valve and the 4th valve are respectively equipped on outlet pipe.
Another embodiment of the application provides a kind of utilization gas flow surveying instrument provided by the above embodiment and measures gas
The method of body flow, comprising: close the drain line and outlet pipe, open the air inlet pipeline and bypass line, with flat
Weigh the pressure of first closed container and the second closed container；Bypass line is closed, drain line is opened, starts level sensing
Then device opens outlet pipe.
The utility model has the advantages that
The gas flow surveying instrument of the embodiment of the present application can measure the flow and flow rate of the gas of micrometeor,
Measurement accuracy is high, range is big, and is suitable for the measurement of gas-pressurized.
The measurement method of the embodiment of the present application pushes the liquid in the first closed container to flow to by pressure-sustaining gas
In second closed container, the gas in the second closed container is discharged by the promotion of the liquid flowed into from outlet pipe；According to
The variation for the liquid volume that liquid level variation in one closed container or the second closed container is converted into, and then obtain from outlet pipe
The cumulative volume flow and flow rate of the gas of discharge.Operation is easy, can micrometer flow gas, measurement accuracy is high, range is big.
Detailed description of the invention
Attached drawing is used to provide to further understand technical scheme, and constitutes part of specification, with this
The embodiment of application is used to explain the technical solution of the application together, does not constitute the limitation to technical scheme.
Fig. 1 is the structural schematic diagram of the gas flow surveying instrument of one embodiment of the application；
Appended drawing reference are as follows: 1, constant pressure valve, 2, pressure gauge, 3, air inlet pipeline, the 4, first valve, 5, liquid, 6, first is closed
Container, 7, data processor, 8, bypass line, the 9, second valve, 10, third valve, 11, drain line, the 12, the 4th valve,
13, outlet pipe, the 14, second closed container, 15, liquid level detection device.
Specific embodiment
Further illustrate the technical solution of the application below with reference to the accompanying drawings and specific embodiments.It is understood that
It is that specific embodiment described herein is used only for explaining the application, rather than the restriction to the application.
As shown in Figure 1, the embodiment of the application provides a kind of gas flow surveying instrument, including filling liquid 5
One closed container 6, the second closed container 14, drain line 11, air inlet pipeline 3, outlet pipe 13, bypass line 8 and liquid level inspection
Survey device 15.
Ullage region of the air inlet pipeline 3 for into first closed container 6 is passed through pressure-sustaining gas, described
Pressure-sustaining gas is insoluble with the liquid 5.The air inlet pipeline 3 is equipped with the first valve 4, is used to open or closes the air inlet pipe
Road 3.
To guarantee that the gas in the ullage region entered in first closed container 6 is constant pressure, the air inlet pipeline 3
On can be equipped with constant pressure valve 1.It is also provided with pressure gauge 2 on the air inlet pipeline 3, to detect the pressure of gas in air inlet pipeline 3
Power.
The outlet pipe 13 is connected on second closed container 14, and the outlet pipe 13 is equipped with the 4th valve
12, it is used to open or closes the outlet pipe 13.
The bypass line 8 is connected to ullage region and second closed container in first closed container 6
14, for balancing the pressure of first closed container 6 and the second closed container 14.The bypass line 8 is equipped with the second valve
Door 9, is used to open or closes the bypass line 8.
One end of the drain line 11 is located at the inside of liquid 5 in first closed container 6, and the other end is located at described
In second closed container 14.The drain line 11 is close for making the liquid 5 in first closed container 6 flow into described second
It closes in container 14.The drain line 11 is equipped with third valve 10, is used to open or closes the drain line 11.
The liquid level detection device 15 is used to detect the liquid level in first closed container 6 or the second closed container 14.
The liquid level detection device 15 can use liquidometer, can use high-precision liquidometer Accurate Detection of Liquid Level.
It, can be with according to the sectional area of liquid level variation and first closed container 6 in first closed container 6
Calculate 5 volume change of liquid in first closed container 6；Alternatively, according to the liquid level in second closed container 14
The sectional area of variation and second closed container 14, can calculate 5 volume of liquid in second closed container 14
Variation.For convenient for calculating 5 volume change of liquid, first closed container 6 or the second closed container 14, which can be set to, etc. is cut
Area container.
To meet measuring range requirement, 6 domestic demand of the first closed container contains no less than measured range request in advance
The volume of liquid 5, first closed container 6 and the second closed container 14 is also needed not less than measured range request.
In the present embodiment, data processor 7 can also be set, data processor 7 can be with the liquid level detection device 15
Data communication is converted into the volume data of liquid 5 according to the liquid level data detected of liquid level detection device 15, and then is converted into institute
State the volume flow data for the gas that outlet pipe 13 is discharged.
In conjunction with Fig. 1, another embodiment of the application provides a kind of utilization gas flow measurement provided by the above embodiment and fills
The method for setting measurement gas flow, comprising: close the drain line 11 and outlet pipe 13, open 3 He of air inlet pipeline
Bypass line 8, to balance the pressure of first closed container 6 and the second closed container 14；Bypass line 8 is closed, the row of opening
Liquid pipeline 11 starts liquid level detection device 15, then opens outlet pipe 13.
The method of the measurement gas flow of the present embodiment, includes the following steps:
S1, the first valve 4, third valve 10 and the 4th valve 12 are closed, (gas source is used for the gas source of the surveyed gas of opening
Pressure-sustaining gas is passed through into the first closed container 6 by air inlet pipeline 3), constant pressure valve 1 is adjusted to experimental pressure.
S2, the second valve 9 is opened after opening the first valve 4, balances the pressure of the first closed container 6 and the second closed container 14
Power.
S3, the second valve 9 is closed, then opens third valve 10, start liquid level detection device 15, finally open the 4th valve
Door 12.
In the present embodiment, liquid level detection device 15 detect the first closed container 6 in liquid level, the first closed container 6 be etc.
Sectional area container, sectional area S.The liquid level data detected of liquid level detection device 15 is when record opens four valves 12
L1, measuring after T after a period of time terminates, and the liquid level data detected of liquid level detection device 15 is L2 at this time, then, in time T
The total volume V1 for flowing through the gas of the 4th valve 12 is equal to the total volume V2 namely V1=for flowing through the pressure-sustaining gas of the first valve 4
V2=(L1-L2) × S.
The flow for flowing through the gas of the 4th valve 12 or the first valve 4 is the cumulative volume increment of unit time, can be by counting
According to 7 automatic collection of processor, program calculation or chart (total volume change with time tendency chart) display.
The measurement method of the present embodiment pushes the liquid 5 in the first closed container 6 to flow to second by pressure-sustaining gas
In closed container 14, the gas in the second closed container 14 is discharged by the promotion of the liquid 5 flowed into from outlet pipe 13；According to
The variation for 5 volume of liquid that liquid level variation in first closed container 6 or the second closed container 14 is converted into, and then obtain from out
The cumulative volume flow and flow rate for the gas that air pipe 13 is discharged.Operation is easy, can micrometer flow gas, measurement accuracy is high,
Range is big.
The measurement method and measuring device of the embodiment of the present application, range is big, precision is high, environment resistant interference performance is strong, can survey
Measure the flow and flow rate of the gas-pressurized of micrometeor.Suitable for metallurgy, electric power, coal, petroleum, chemical industry, light textile, food, medicine,
The indoor scientific experiment of the industries such as pesticide, environmental protection.
Claims (3)
1. a kind of gas flow surveying instrument, it is characterised in that: the first closed container, the second closed appearance including filling liquid
Device, drain line, air inlet pipeline, outlet pipe, bypass line and liquid level detection device；
Ullage region of the air inlet pipeline for into first closed container is passed through pressure-sustaining gas, the constant pressure gas
Body is insoluble with the liquid；
The outlet pipe is connected on second closed container；
The bypass line is connected to ullage region and second closed container in first closed container；
One end of the drain line is located at the inside of liquid in first closed container, and it is closed that the other end is located at described second
In container；
The liquid level detection device is used to detect the liquid level in first closed container or the second closed container；
The first valve, the second valve, third are respectively equipped on the air inlet pipeline, bypass line, drain line and outlet pipe
Valve and the 4th valve.
2. gas flow surveying instrument as described in claim 1, it is characterised in that: be additionally provided with constant pressure on the air inlet pipeline
Valve.
3. utilizing the method for gas flow surveying instrument as claimed in claim 1 or 2 measurement gas flow, which is characterized in that
Include:
The drain line and outlet pipe are closed, the air inlet pipeline and bypass line are opened, it is closed to balance described first
The pressure of container and the second closed container；
Bypass line is closed, drain line is opened, starts liquid level detection device, then opens outlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910127035.4A CN109708707B (en) | 2019-02-20 | 2019-02-20 | Gas flow measuring device and measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910127035.4A CN109708707B (en) | 2019-02-20 | 2019-02-20 | Gas flow measuring device and measuring method |
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| Publication Number | Publication Date |
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| CN109708707A true CN109708707A (en) | 2019-05-03 |
| CN109708707B CN109708707B (en) | 2020-10-13 |
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| CN201910127035.4A Active CN109708707B (en) | 2019-02-20 | 2019-02-20 | Gas flow measuring device and measuring method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082048A (en) * | 2019-06-11 | 2019-08-02 | 靳殷实 | A kind of detection of gas flow rate device |
| CN110260935A (en) * | 2019-07-29 | 2019-09-20 | 盛密科技(上海)有限公司 | A kind of flow detector |
| CN110736503A (en) * | 2019-10-17 | 2020-01-31 | 浙江高成绿能科技有限公司 | A device for continuously measuring gas |
| CN112067528A (en) * | 2020-09-30 | 2020-12-11 | 农业农村部环境保护科研监测所 | Porosity measuring device and porosity measuring method |
| CN112146720A (en) * | 2020-09-21 | 2020-12-29 | 兰州空间技术物理研究所 | Micro gas flow measuring device and method |
| CN113155209A (en) * | 2021-05-20 | 2021-07-23 | 重庆灏宁生物技术有限公司 | Device for determining liquid flow rate through gas-liquid mixed backflow |
| CN113551737A (en) * | 2021-07-22 | 2021-10-26 | 中国核动力研究设计院 | Liquid level measuring device and measuring method |
| CN115433594A (en) * | 2022-09-28 | 2022-12-06 | 张双兴 | Pressure adjusting method and device |
| CN120063422A (en) * | 2025-04-30 | 2025-05-30 | 中国农业科学院农业环境与可持续发展研究所 | Gas volume measuring device and method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082048A (en) * | 2019-06-11 | 2019-08-02 | 靳殷实 | A kind of detection of gas flow rate device |
| CN110260935A (en) * | 2019-07-29 | 2019-09-20 | 盛密科技(上海)有限公司 | A kind of flow detector |
| CN110260935B (en) * | 2019-07-29 | 2024-08-09 | 盛密科技(上海)有限公司 | Flow detection device |
| CN110736503A (en) * | 2019-10-17 | 2020-01-31 | 浙江高成绿能科技有限公司 | A device for continuously measuring gas |
| CN112146720A (en) * | 2020-09-21 | 2020-12-29 | 兰州空间技术物理研究所 | Micro gas flow measuring device and method |
| CN112146720B (en) * | 2020-09-21 | 2023-10-20 | 兰州空间技术物理研究所 | Micro gas flow measuring device and method |
| CN112067528A (en) * | 2020-09-30 | 2020-12-11 | 农业农村部环境保护科研监测所 | Porosity measuring device and porosity measuring method |
| CN113155209A (en) * | 2021-05-20 | 2021-07-23 | 重庆灏宁生物技术有限公司 | Device for determining liquid flow rate through gas-liquid mixed backflow |
| CN113551737A (en) * | 2021-07-22 | 2021-10-26 | 中国核动力研究设计院 | Liquid level measuring device and measuring method |
| CN115433594A (en) * | 2022-09-28 | 2022-12-06 | 张双兴 | Pressure adjusting method and device |
| CN115433594B (en) * | 2022-09-28 | 2023-12-05 | 张双兴 | Pressure adjusting method and device |
| CN120063422A (en) * | 2025-04-30 | 2025-05-30 | 中国农业科学院农业环境与可持续发展研究所 | Gas volume measuring device and method |
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