CN106932057A - A kind of bell-jar gas flow caliberating device - Google Patents
A kind of bell-jar gas flow caliberating device Download PDFInfo
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- CN106932057A CN106932057A CN201710266921.6A CN201710266921A CN106932057A CN 106932057 A CN106932057 A CN 106932057A CN 201710266921 A CN201710266921 A CN 201710266921A CN 106932057 A CN106932057 A CN 106932057A
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- pressure gauge
- thermometer
- digital
- switch
- fixed pulley
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
- G01F25/15—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters specially adapted for gas meters
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- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention belongs to measurement technology, it is related to the improvement to bell-jar gas flow caliberating device.It is characterized in that：Shading baffle (14) is installed on the 2nd fixed pulley (5), optoelectronic receiver (15) is installed on the entablature for demarcating stand (6)；The 1st described thermometer is the 1st digital thermometer (16), and the 2nd described temperature is the 2nd digital thermometer (19)；The 1st described pressure gauge is the 1st digital pressure gauge (20)；The 2nd described pressure gauge is the 2nd digital pressure gauge (18).The present invention proposes a kind of improved bell-jar gas flow caliberating device, substantially increases the accuracy and stated accuracy of reference record, simplifies working procedure, saves manpower, improves operating efficiency.
Description
Technical field
The invention belongs to measurement technology, it is related to the improvement to bell-jar gas flow caliberating device.
Background technology
Referring to Fig. 1, it includes the liquid bath 1 with bell jar, leads a kind of current bell-jar gas flow caliberating device structure
Tracheae 2, the fixed pulley 4 of steel wire rope 3 the 1st, the 2nd fixed pulley 5, demarcation stand 6, scale 7, the switch of transparent liquid level tube the 8, the 1st the 9, the 2nd are opened
Close 10, pressure reducer the 11, the 3rd and switch the 13, the 1st thermometer T1, the 2nd thermometer T2, the 1st pressure gauge P1, the 2nd pressure gauge P2 and counterweight
G.There is aqueous medium in liquid bath 1, in the inner chamber that wireway 2 gos deep into liquid bath 1 from the bottom up of liquid bath 1, the upper port position of wireway 2
On the liquid level of aqueous medium, the 1st fixed pulley 4 and the 2nd fixed pulley 5 are arranged on the entablature for demarcating stand 6, steel wire rope 3
One end is connected with the top center of bell jar, and the other end of steel wire rope 3 connects after bypassing the 2nd fixed pulley 5 and the 1st fixed pulley 4 with counterweight G
Connect, counterweight G is located at the outside of liquid bath 1, scale 7 is fixed on the external cylindrical surface of bell jar, scale 7 is used to show the height of bell jar lifting/lowering
Degree, the display liquid level position of transparent liquid level tube 8, is easy to observe the reading of scale 7.1st thermometer is arranged on bell jar and measures bell jar
Interior gas temperature, the lower port of wireway 2 by pipeline respectively with the 1st manometric pressure sensing port, one end of the 1st switch 9 and
2nd switch 10 one end connection, the 2nd switch 10 the other end series connection pressure reducer 11 after connect with source of the gas, the 1st switch 9 it is another
End connects with one end of the temperature-sensitive port, the 2nd manometric pressure sensing port and the gas flowmeter 12 being calibrated of the 2nd thermometer respectively
It is logical, lead to air after the switch 13 of other end series connection the 3rd of the gas flowmeter 12 being calibrated.
Its operation principle is：Calibration/the calibrating of flowmeter can use degassing method or air inlet method.Air inlet method is gas by gas
Source is by flowmeter inflow device；Exhaust rule is that gas is discharged from device by flowmeter.Measurement discharge flows into gas
The volume of body and discharge or gas pressure and temperature, calculating outflow in the time for flowing into, and device and before flowmeter
Count the actual flow Q under scale stateV.The gas flowmeter 12 that will be calibrated is connected in test system, opens pressure reducer
11, the 2nd switch 10, compressed gas enter bell jar by wireway 2, bell jar is increased.When bell jar rises to extreme higher position, close
2nd switch 10, pressure reducer 11.Stop a period of time, after after gas temperature stabilization in bell jar, start to use degassing method proving flowmeter.
Bell-jar gas flow caliberating device is in itself one to be had constant pressure source and provides the gas flow standard device of orthobaric volume.Clock
Cover in itself weight and mass G and other accessory weight difference be a constant.The constant determines clock internal mask pressure.Compensation mechanism
Overcome the influence of buoyancy, the constant is not changed with the water-immersed depth of bell jar, it is ensured that the stabilization in flow field.Open the 1st
The switch of switch the 9 and the 3rd 13, bell jar is declined with certain flow rate, and gas passes through gas flowmeter of the wireway through being calibrated in bell jar
12 flow into air.With reference to the position of transparent liquid level tube 8, the beginning and end position of scale 7 and time used are observed and record,
And the pressure value of the temperature value of the 1st thermometer T1 and the 1st pressure gauge P1 in bell jar is write down, before the gas flowmeter 12 being calibrated
The temperature value of the 2nd thermometer T2, the pressure value of the 2nd pressure gauge P2 calculates the gas flow being calibrated by the artificial formula that substitutes into
The 12 actual flow Q under scale state of meterV。
It has the disadvantage：Above-mentioned bell-jar gas flow caliberating device is in calibration process, it is necessary to operator's observation and record
Numerous temperature, pressure, volume and time parameter, personnel's observation cause that the accuracy of reference record is poor, and stated accuracy is low, works
Program it is loaded down with trivial details, it is necessary to staff it is many, inefficiency.
The content of the invention
The purpose of the present invention is：A kind of improved bell-jar gas flow caliberating device is proposed, to improve reference record
Accuracy and stated accuracy, simplify working procedure, save manpower, improve operating efficiency.
The technical scheme is that：A kind of bell-jar gas flow caliberating device, including the liquid bath 1 with bell jar, lead
Tracheae 2, the fixed pulley 4 of steel wire rope 3 the 1st, the 2nd fixed pulley 5, the switch 10, pressure reducer the 11, the 3rd of demarcation stand the 6, the 1st switch the 9, the 2nd
The 13, the 1st thermometer of switch, the 2nd thermometer, the 1st pressure gauge, the 2nd pressure gauge and counterweight G；There are aqueous medium, wireway 2 in liquid bath 1
In the inner chamber for going deep into liquid bath 1 from the bottom up of liquid bath 1, the upper port of wireway 2 is located on the liquid level of aqueous medium, and the 1st determines
The fixed pulley 5 of pulley 4 and the 2nd is arranged on the entablature for demarcating stand 6, and one end of steel wire rope 3 is connected with the top center of bell jar,
The other end of steel wire rope 3 is connected after bypassing the 2nd fixed pulley 5 and the 1st fixed pulley 4 with counterweight G, and counterweight G is located at the outside of liquid bath 1,
1st thermometer is arranged on and gas temperature in bell jar is measured on bell jar, the lower port of wireway 2 by pipeline respectively with the 1st pressure
The pressure sensing port of table, one end of the 1st switch 9 connect with one end of the 2nd switch 10, the other end series connection pressure reducer of the 2nd switch 10
Connected with source of the gas after 11, other end temperature-sensitive port, the 2nd manometric pressure sensing port respectively with the 2nd thermometer of the 1st switch 9
One end with the gas flowmeter 12 being calibrated connects, after the switch 13 of other end series connection the 3rd of the gas flowmeter 12 being calibrated
Logical air；It is characterized in that：Be uniformly distributed along the circumference, at least 2 shading baffles 14 are installed on the 2nd fixed pulley 5, in calibrating table
Optoelectronic receiver 15 of the light direction towards shading baffle 14 is installed on the entablature of frame 6；The 1st described thermometer is the 1st
Digital thermometer 16, the 2nd described temperature is the 2nd digital thermometer 19；The 1st described pressure gauge is the 1st digital pressure gauge 20；
The 2nd described pressure gauge is the 2nd digital pressure gauge 18；Also include intelligent controller 17, the signal output part of optoelectronic receiver 15
It is connected with the optoelectronic receiver signal input part 17a of intelligent controller 17, the signal output part and intelligence of the 1st digital thermometer 16
The 1st digital thermometer signal input part 17b connections of controller 17, signal output part and the intelligence of the 1st digital pressure gauge 20 are controlled
The 1st digital pressure gauge signal input part 17c connections of device processed 17, the signal output part and Based Intelligent Control of the 2nd digital thermometer 19
The 2nd digital thermometer signal input part 17d connections of device 17, the signal output part and intelligent controller of the 2nd digital pressure gauge 18
17 the 2nd digital pressure gauge signal input part 17e connections.
It is an advantage of the invention that：A kind of improved bell-jar gas flow caliberating device is proposed, parameter is substantially increased
The accuracy and stated accuracy of record, simplify working procedure, save manpower, improve operating efficiency.
Brief description of the drawings
Fig. 1 is a kind of structural representation of current bell-jar gas flow caliberating device.
Fig. 2 is structural representation of the invention.
Specific embodiment
The present invention is described in further details below.Referring to Fig. 2, a kind of bell-jar gas flow caliberating device, including
Liquid bath 1, wireway 2, the fixed pulley 4 of steel wire rope 3 the 1st, the 2nd fixed pulley 5 with bell jar, demarcation stand the 6, the 1st switch the 9, the 2nd are opened
Close 10, pressure reducer the 11, the 3rd and switch the 13, the 1st thermometer, the 2nd thermometer, the 1st pressure gauge, the 2nd pressure gauge and counterweight G；Liquid bath 1
Inside there is aqueous medium, in the inner chamber that wireway 2 gos deep into liquid bath 1 from the bottom up of liquid bath 1, the upper port of wireway 2 is situated between positioned at water
On the liquid level of matter, the 1st fixed pulley 4 and the 2nd fixed pulley 5 are arranged on the entablature for demarcating stand 6, one end of steel wire rope 3 with
The top center connection of bell jar, the other end of steel wire rope 3 is connected with counterweight G after bypassing the 2nd fixed pulley 5 and the 1st fixed pulley 4, matches somebody with somebody
Weight G is located at the outside of liquid bath 1, and the 1st thermometer is arranged on and gas temperature in bell jar is measured on bell jar, and the lower port of wireway 2 is led to
Cross the one end of pipeline respectively with the 1st manometric pressure sensing port, one end of the 1st switch 9 and the 2nd switch 10 to connect, the 2nd switch 10
Other end series connection pressure reducer 11 after connect with source of the gas, the 1st switchs 9 other end temperature-sensitive port respectively with the 2nd thermometer, the
2 manometric pressure sensing ports are connected with the one end for the gas flowmeter 12 being calibrated, the gas flowmeter 12 being calibrated it is another
Lead to air after the switch 13 of end series connection the 3rd；It is characterized in that：Be uniformly distributed along the circumference, at least 2 screenings are installed on the 2nd fixed pulley 5
Baffle plate 14, optoelectronic receiver 15 of the light direction towards shading baffle 14 is installed with the entablature for demarcating stand 6；It is described
The 1st thermometer be the 1st digital thermometer 16, the 2nd described temperature is the 2nd digital thermometer 19；The 1st described pressure gauge is
1st digital pressure gauge 20；The 2nd described pressure gauge is the 2nd digital pressure gauge 18；Also include intelligent controller 17, photoelectricity receives
The signal output part of device 15 is connected with the optoelectronic receiver signal input part 17a of intelligent controller 17, the 1st digital thermometer 16
Signal output part is connected with the 1st digital thermometer signal input part 17b of intelligent controller 17, the letter of the 1st digital pressure gauge 20
Number output end is connected with the 1st digital pressure gauge signal input part 17c of intelligent controller 17, the signal of the 2nd digital thermometer 19
Output end is connected with the 2nd digital thermometer signal input part 17d of intelligent controller 17, and the signal of the 2nd digital pressure gauge 18 is defeated
Go out end to be connected with the 2nd digital pressure gauge signal input part 17e of intelligent controller 17.
Operation principle of the invention is：Calibration/the calibrating of flowmeter can use degassing method or air inlet method.Air inlet method is gas
Body is by source of the gas by flowmeter inflow device；Exhaust rule is that gas is discharged from device by flowmeter.Measurement discharge or
The volume of inflow gas and discharge or the time for flowing into, and the gas pressure in device and before flowmeter and temperature, calculating
Actual flow Q of the flow meter under scale stateV。
The gas flowmeter 12 that will be calibrated is connected in test system, opens the switch of pressure reducer the 11, the 2nd 10, compressed gas
Body enters bell jar by wireway 2, bell jar is increased.When bell jar rises to extreme higher position, the 2nd switch 10, pressure reducer 11 are closed.
Stop a period of time, after after gas temperature stabilization in bell jar, open intelligent controller 17, into gas flow calibrating procedure, start
Use degassing method proving flowmeter.Bell-jar gas flow caliberating device is in itself one to be had constant pressure source and provides orthobaric volume
Gas flow standard device.Bell jar in itself weight and mass G and other accessory weight difference be a constant.The constant is determined
Clock internal mask pressure.Compensation mechanism overcomes the influence of buoyancy, the constant is not changed with the water-immersed depth of bell jar, it is ensured that
The stabilization in flow field.The switch 13 of the 1st switch the 9 and the 3rd is opened, bell jar is declined with certain flow rate, and gas is passed through by wireway in bell jar
The gas flowmeter 12 being calibrated flows into air.When the wherein baffle plate of shading baffle 14 covers the light that optoelectronic receiver 15 sends
Line, the triggering output signal of optoelectronic receiver 15 is transmitted to intelligent controller 17, starts timer and starts timing, runs into next baffle plate
When, the output signal of optoelectronic receiver 15 is triggered again is transmitted to intelligent controller 17, stop timing.1st digital thermometer 16 is gathered
The temperature value of gas medium and intelligent controller 17 is transmitted in bell jar, gas medium in the collection bell jar of the 1st digital pressure gauge 20
Pressure value and the temperature value being transmitted to before the gas flowmeter 12 that the collection of the digital thermometer (19) of intelligent controller the 17, the 2nd is calibrated
And intelligent controller 17 is transmitted to, the 2nd digital pressure gauge 18 gathers the pressure value before the gas flowmeter 12 being calibrated and is transmitted to intelligence
Energy controller 17, the signal of same day atmospheric pressure is transmitted to bell jar between intelligent controller 17, baffle plate by the pressure sensor of peripheral hardware
Volume V is calibrated in advance, and intelligent controller 17 calculates actual flow Q of the flow meter under scale state automaticallyV。
Due to carrying out accurate measurement to the height change of bell jar using shading baffle 14 and optoelectronic receiver 15, so as to solve
Personnel's observation causes the accuracy difference of reference record and stated accuracy low problem, substantially increases the accuracy of reference record
And stated accuracy, by digital thermometer and digital pressure gauge automatic data collection and intelligent controller 17 is transmitted to, simplify work
Make program, save manpower, improve operating efficiency.
Embodiment：6 pieces of shading baffles 14 are provided with the 2nd fixed pulley 5.The numeral of optoelectronic receiver the 15, the 1st for being used
Thermometer 16, the digital pressure gauge 18 of intelligent controller the 17, the 2nd, the 2nd digital thermometer 19, the 1st digital pressure gauge 20 is finished product
Part.
Claims (1)
1. a kind of bell-jar gas flow caliberating device, including the liquid bath (1) with bell jar, wireway (2), steel wire rope (3) the 1st
Fixed pulley (4), the 2nd fixed pulley (5), demarcation stand (6), the 1st switch (9), the 2nd switch (10), pressure reducer (11), the 3rd switch
(13), the 1st thermometer, the 2nd thermometer, the 1st pressure gauge, the 2nd pressure gauge and counterweight G；There are aqueous medium, wireway in liquid bath (1)
(2) bottom up from liquid bath (1) is goed deep into the inner chamber of liquid bath (1), the upper port of wireway (2) be located at aqueous medium liquid level it
On, the 1st fixed pulley (4) and the 2nd fixed pulley (5) on the entablature for demarcating stand (6), one end of steel wire rope (3) and clock
The top center connection of cover, the other end of steel wire rope (3) bypasses the 2nd fixed pulley (5) and the 1st fixed pulley (4) and connects with counterweight G afterwards
Connect, counterweight G is located at the outside of liquid bath (1), the 1st thermometer is arranged on and gas temperature in bell jar is measured on bell jar, wireway (2)
The one end of lower port by pipeline respectively with the 1st manometric pressure sensing port, one end of the 1st switch (9) and the 2nd switch (10) connects
Logical, the other end of the 2nd switch (10) pressure reducer (11) of connecting connect with source of the gas afterwards, and the 1st switchs the other end of (9) respectively with the 2nd
The temperature-sensitive port of thermometer, the 2nd manometric pressure sensing port are connected with the one end for the gas flowmeter (12) being calibrated, and are calibrated
Gas flowmeter (12) the other end series connection the 3rd switch (13) afterwards lead to air；It is characterized in that：Pacify on the 2nd fixed pulley (5)
Equipped be uniformly distributed along the circumference, at least 2 shading baffles (14), light direction court is installed on the entablature for demarcating stand (6)
To the optoelectronic receiver (15) of shading baffle (14)；The 1st described thermometer is the 1st digital thermometer (16), the 2nd described temperature
Degree is the 2nd digital thermometer (19)；The 1st described pressure gauge is the 1st digital pressure gauge (20)；The 2nd described pressure gauge is the 2nd
Digital pressure gauge (18)；Also include intelligent controller (17), the signal output part and intelligent controller of optoelectronic receiver (15)
(17) optoelectronic receiver signal input part (17a) connection, the signal output part and intelligent controller of the 1st digital thermometer (16)
(17) the 1st digital thermometer signal input part (17b) connection, signal output part and the intelligence of the 1st digital pressure gauge (20) are controlled
1st digital pressure gauge signal input part (17c) connection of device (17) processed, the signal output part and intelligence of the 2nd digital thermometer (19)
2nd digital thermometer signal input part (17d) connection of energy controller (17), the signal output part of the 2nd digital pressure gauge (18)
It is connected with the 2nd digital pressure gauge signal input part (17e) of intelligent controller (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710266921.6A CN106932057A (en) | 2017-04-21 | 2017-04-21 | A kind of bell-jar gas flow caliberating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710266921.6A CN106932057A (en) | 2017-04-21 | 2017-04-21 | A kind of bell-jar gas flow caliberating device |
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| Publication Number | Publication Date |
|---|---|
| CN106932057A true CN106932057A (en) | 2017-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710266921.6A Pending CN106932057A (en) | 2017-04-21 | 2017-04-21 | A kind of bell-jar gas flow caliberating device |
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| Country | Link |
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| CN (1) | CN106932057A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747994A (en) * | 2017-09-11 | 2018-03-02 | 江苏大学 | One kind is based on contact roller method bell-jar gas instantaneous delivery calibrating installation and method |
| CN112051047A (en) * | 2020-09-07 | 2020-12-08 | 中国第一汽车股份有限公司 | Crankcase ventilation system carries out machine oil and measures and recovery unit |
| CN113108843A (en) * | 2021-04-21 | 2021-07-13 | 上海交通大学 | Micro-oxygen generator and detection jig and detection method for oxygen generating component of micro-oxygen generator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747994A (en) * | 2017-09-11 | 2018-03-02 | 江苏大学 | One kind is based on contact roller method bell-jar gas instantaneous delivery calibrating installation and method |
| CN112051047A (en) * | 2020-09-07 | 2020-12-08 | 中国第一汽车股份有限公司 | Crankcase ventilation system carries out machine oil and measures and recovery unit |
| CN113108843A (en) * | 2021-04-21 | 2021-07-13 | 上海交通大学 | Micro-oxygen generator and detection jig and detection method for oxygen generating component of micro-oxygen generator |
| CN113108843B (en) * | 2021-04-21 | 2023-03-24 | 上海交通大学 | Micro-oxygen generator and detection jig and detection method for oxygen generating component of micro-oxygen generator |
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