CN206208353U - A kind of gas Actual flow test device with self-calibration function - Google Patents
A kind of gas Actual flow test device with self-calibration function Download PDFInfo
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- CN206208353U CN206208353U CN201621129740.6U CN201621129740U CN206208353U CN 206208353 U CN206208353 U CN 206208353U CN 201621129740 U CN201621129740 U CN 201621129740U CN 206208353 U CN206208353 U CN 206208353U
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Abstract
The utility model provides a kind of gas Actual flow test device with self-calibration function, is related to field of measuring technique.Standard scale output end is connected by pneumatic operated valve V7 with explosion-proof fan input, piston type gas flow standard is connected by pneumatic operated valve V8 by cavity of resorption with explosion-proof fan input, tested table platform is serially connected between standard scale output end and cavity of resorption, natural gas air accumulator output end is connected with check-valves V10, check-valves V10 output ends, standard scale input and nitrogen air accumulator output end are interconnected, and check-valves V10 inputs, explosion-proof fan output end are connected with epicoele respectively.The utility model solves gas meter, flow meter in the prior art, and stream detection cannot be from the technical problem for verifying detection with long duration test separation system in fact.The utility model has the beneficial effect that：Stream calibrating detection efficiency integrated with durability test device is high in fact for gas.System self-calibration ensures that detection is reliable.
Description
Technical field
The utility model is related to field of measuring technique, more particularly, to it is a kind of with self-calibration function to gas meter, flow meter gas reality
Stream calibrating and the integrated device of durability test.
Background technology
Detection at present with method of standard table gas flow standard device to gas meter, flow meter is relatively more.These test device majorities are adopted
With a type of flowmeter as standard scale.Minority is also operationally basis using the test device of two types standard scales
Flow selects a kind of type standard table system independent operating.In order that range of flow is compatible, and system can be carried out from verification,
Prior art has had improvement.Chinese patent Authorization Notice No. CN202092737U, authorized announcement date on December 28th, 2011,
Entitled " realizing from the method for standard table gas flow standard device for verifying function " utility model patent is exactly that one kind therein changes
Enter device.The device mainly includes standard scale system, tested gas flowmeter, measuring system, pipe-line system, air supply system, control
System processed；Standard scale system uses gas turbine meter and the two kinds of standard scale of critical flow venturi nozzle, measurement system
System includes measuring the thermometric pressure instrumentation at critical flow venturi nozzle component, gas-turbine standard scale and tested flowmeter, with
And hygrometer, timer；Pipe-line system includes source of the gas pipeline, standard scale pipeline and tested flowmeter pipeline；Air supply system is with big
Gas is source of the gas, using blower fan or vacuum pump apparatus；It with PC machines is basic control system that control system is；Air supply system passes through
Pipe-line system is connected with standard scale system and tested gas flowmeter, using negative pressure method, using blower fan or pumping gas, same
Gas is continued through standard scale and tested gas flowmeter in time interval, both output valves measured by measuring system,
It is basic control system by with PC machines, completes all of field apparatus Control ＆ data acquisition, data processing, it is determined that quilt
Examine the instrument coefficient of gas flowmeter, the error of indication, repeatability or uncertainty of measurement.The device is realizing verifying certainly for device
During function, two sets of independent standard scale systems are individually tested by a table for being used to verify, then to respective reality
Testing result carries out calculating the result from verifying, it is impossible to disposably directly obtain verification result.Package unit can not realize reality
The recycling of medium is tested, efficiency is low.In addition, national verification specifies there is requirement very high for domestic gas meter reliability, this
It is accomplished by carrying out long duration test to product.It is current that endurancing, poor reliability are carried out using air mostly；Or from coal gas
Company has in the user of cooperative relationship to select to install and realizes real gas body long duration test, not only inconvenient but also there is safety
Hidden danger.
Utility model content
In order to solve in the prior art gas meter, flow meter airflow detecting device in fact stream detection can not and meanwhile do long duration test, from core
The system of looking into cannot disposably directly obtain verification result, and detection efficiency is low, the insecure technical problem of testing result, and this practicality is new
Type provides a kind of high detection efficiency, the reliable gas Actual flow test device with self-calibration function of detection.
The technical solution of the utility model is：A kind of gas Actual flow test device with self-calibration function, it includes gas
Origin system, piston type gas flow standard and gas flow standard system, gas flow standard system include standard scale and prevent
Quick-fried blower fan, standard scale output end is connected by the pneumatic operated valve V7 for setting with explosion-proof fan input, piston type gas flow standard
Device is divided into separate epicoele and cavity of resorption by piston, and cavity of resorption is connected by the pneumatic operated valve V8 for setting with explosion-proof fan input
Connect, tested table platform be serially connected between standard scale output end and cavity of resorption, air supply system includes nitrogen air accumulator and natural gas air accumulator,
Natural gas air accumulator output end is connected with check-valves V10, and check-valves V10 output ends, standard scale input and nitrogen air accumulator are defeated
Go out end to be interconnected, check-valves V10 inputs, explosion-proof fan output end are connected with epicoele respectively.Collection gas in fact examine and determine and gas by stream
Body flow endurancing is integrated, it is not necessary to dismount, and saves use cost, improves efficiency.Realize system self-calibration, it is ensured that be
System operation is accurate, detection is reliable.Tested media is recycled, energy-conserving and environment-protective, improves test environment.
Preferably, natural gas air accumulator input is connected with natural air-air source, pressure-reducing valve by the pressure-reducing valve V13 for setting
V13 is connected with ball valve V15 with natural gas air accumulator input connectivity part, and the ball valve V15 other ends are connected with bleeder pipe；Keep inflation
Steadily.
Preferably, pressure-reducing valve V13 is connected with vavuum pump with ball valve V15 connectivity parts.
Preferably, standard scale input is in series with pneumatic operated valve V3, standard scale two ends of being connected with pneumatic operated valve V3 are parallel with gas
Dynamic valve V4；Standard scale is facilitated to access and isolate.
Preferably, explosion-proof fan is electrically connected with frequency converter, explosion-proof fan input, output end are connected to Flow-rate adjustment
Valve, thermoregulator；Flow is accurate, it is ensured that reliable test result.
Preferably, nitrogen air accumulator input is connected with Nitrogen source gases by the pressure-reducing valve V1 for setting.
Preferably, the output end of natural gas air accumulator is connected with ball valve V12 and pneumatic operated valve V11 in turn；Dual fail-safe is eliminated
Potential safety hazard.
Compared with prior art, the beneficial effects of the utility model are：Realize gas stream calibrating installation and gas flow in fact
The integration of durability test device, may be implemented in carries out calibrating state or endurancing at any time in the case of need not dismounting
The switching of state, detection efficiency is high.Realize the self calibration of system, it is ensured that system operation is accurate, detection is reliable.Extend system
The calibrating time, save use cost.Tested media is recycled, energy-conserving and environment-protective, improves test environment.
Brief description of the drawings
Accompanying drawing 1 is the utility model gas displacement connection diagram；
Accompanying drawing 2 is self calibration connection diagram；
Accompanying drawing 3 is the tested table connection diagram of standard scale calibrating；
Accompanying drawing 4 is the tested table connection diagram of piston type gas flow standard calibrating；
Accompanying drawing 5 is endurancing connection diagram.
In figure：1- air supply systems；2- piston type gas flow standards；The tested table platforms of 3-；4- gas flow standard systems；
5- bleeder pipes；11- natural air-air sources；12- natural gas air accumulators；13- vavuum pumps；14- nitrogen air accumulators；15- Nitrogen source gases；
51- escaping pipes；21- epicoeles；22- cavity of resorptions；41- thermoregulators；42- explosion-proof fans；43- flow control valves；44- frequency converters；
45- standard scales.
Specific embodiment
Below by embodiment, and with reference to accompanying drawing, the technical solution of the utility model is described in further detail.
Embodiment 1：
As shown in figure 1, a kind of gas Actual flow test device with self-calibration function, it includes：Air supply system 1, piston
Formula gas flow standard device 2, tested table platform 3 and gas flow standard system 4.Gas flow standard system 4 includes：Temperature adjustment
Device 41, explosion-proof fan 42, flow control valve 43, frequency converter 44 and standard scale 45.The input of standard scale 45 is in series with pneumatic operated valve V3,
The two ends of being connected with pneumatic operated valve V3 of standard scale 45 are parallel with pneumatic operated valve V4.Explosion-proof fan 42 is electrically connected with frequency converter 44.Explosion-proof fan
42 inputs are connected with the output end of flow control valve 43.The output end of standard scale 45 is connected with pneumatic operated valve V7, pneumatic operated valve V7 with it is explosion-proof
The input of blower fan 42 is connected.Air supply system 1 includes：Natural air-air source 11, natural gas air accumulator 12, vavuum pump 13, nitrogen gas storage
Tank 14 and Nitrogen source gases 15.The output end of natural gas air accumulator 12 is connected with check-valves V10.The outlet of natural air-air source 11 is connected with and subtracts
Pressure valve V13, pressure-reducing valve V13 output ends are connected with the input of natural gas air accumulator 12.The output end of natural gas air accumulator 12 is connected with
Ball valve V12, the ball valve V12 other ends are connected with pneumatic operated valve V11.Pneumatic operated valve V11 is connected with check-valves V10 inputs.Check-valves V10
Output end, the input of standard scale 45 and the output end of nitrogen air accumulator 14 are interconnected.Check-valves V10 output ends are defeated with standard scale 45
Enter end connection.The outlet of Nitrogen source gases 15 is connected with pressure-reducing valve V1, and pressure-reducing valve V1 output ends are connected with the input of nitrogen air accumulator 14.
The output end of nitrogen air accumulator 14 is connected with the input of standard scale 45.The output end of nitrogen air accumulator 14 is connected with ball valve V2.Ball valve V2
The other end, check-valves V10 output ends, pneumatic operated valve V3 and pneumatic operated valve V4 are connected in same four-way.Pressure-reducing valve V13 and natural gas gas storage
The input connectivity part of tank 12 is connected with ball valve V15, and the ball valve V15 other ends are connected with the bleeder pipe 5 with atmosphere.Pressure-reducing valve
V13 is connected with pneumatic operated valve V14 with ball valve V15 connectivity parts, and the pneumatic operated valve V14 other ends are connected with vavuum pump 13.Gas piston stream
Cylinder body is divided into separate epicoele 21 and cavity of resorption 22 by amount standard 2 by piston.Check-valves V10 inputs, explosion-proof fan
42 output ends are connected with epicoele 21 respectively.The output end of explosion-proof fan 42 is connected with thermoregulator 41.Thermoregulator 41 is another
End connects with epicoele 21.Pneumatic operated valve V11 is connected with check-valves V10 inputs connectivity part with epicoele 21.Cavity of resorption 22 is by setting
Pneumatic operated valve V8 is connected with the input of explosion-proof fan 42.Tested table platform 3 is concatenated between the output end of standard scale 45 and cavity of resorption 22.Tested table
Platform 3 is placed with the tested table of series connection.The tested input of table platform 3 is connected with pneumatic operated valve V5, output and is terminated with pneumatic operated valve V6.Pneumatic operated valve
V5 is connected with first tested table input.Pneumatic operated valve V6 is connected with last tested table output end end.Pneumatic operated valve V5 is another
End connects with pneumatic operated valve V7.Pneumatic operated valve V8 one end connects with cavity of resorption 22, the other end and pneumatic operated valve V6, pneumatic operated valve V7 and Flow-rate adjustment
The input of valve 43 is communicated in same four-way.
In Fig. 1-5, the expression valve of valve blacking is closed, and the non-blacking of valve represents that valve is opened.Arrow represents airflow direction.
As shown in Figure 1：It is the utility model gas displacement connection diagram：Close pneumatic operated valve V3, pressure-reducing valve V13 and pneumatic
Valve V14, other valves are opened, by standard scale 45, natural air-air source 11 and vavuum pump 13 and isolation of system.Pressure-reducing valve V1 is opened,
Nitrogen source gases 15 are filled with nitrogen to system.Pressure-reducing valve V1 system pressurize No leakages are closed, ball valve V15 is opened, is vented from bleeder pipe 5
Ball valve V15 is closed afterwards.Open pneumatic operated valve V14, open vavuum pump 13.After system is extracted into vacuum, pneumatic operated valve V14 and vavuum pump are closed
13.Pressure-reducing valve V1 is opened, Nitrogen source gases 15 are inflated into nitrogen to system.The rated pressure value of whole pipe-line system is reached, is closed
Pneumatic operated valve V1.Then, ball valve V15 is opened to be vented again.It is repeated several times opening pressure-reducing valve after the oxygen content of gas in system is up to standard
V13, natural air-air source 11 to natural gas is poured in system, to system in gas pressure reach testing standard setting, close gas
Dynamic valve V11, ball valve V12 and pressure-reducing valve V13.
As shown in Fig. 2 opening pneumatic operated valve V3, pneumatic operated valve V7 and pneumatic operated valve V8, other valve closings.The input of standard scale 45
Connected with epicoele 21, the output end of standard scale 45 is connected with cavity of resorption 22.The piston movement of piston type gas flow standard 2, according to
Each cross section mass flow is equal everywhere in continuous closed conduit, carries out piston type gas flow standard 2 and standard scale 45 certainly
Calibration.
As shown in figure 3, opening pneumatic operated valve V3, pneumatic operated valve V5, pneumatic operated valve 6 and valve pneumatic 9, other valve closings.Start anti-
Quick-fried blower fan 42.Frequency converter 44 controls the rotating speed of explosion-proof fan 42, coarse adjustment flow system flow.The accurate adjustment system stream of flow control valve 43
Amount.The natural gas injection epicoele 21 of the output of explosion-proof fan 42, the piston of piston type gas flow standard 2 moves down into the body of epicoele 21
Product is maximum to be stopped.The natural gas of the output of explosion-proof fan 42 reaches steadily by epicoele 21, then flows into standard scale 45.It is natural in system
Air-flow is through the tested table tested table of circulation calibrating in explosion-proof fan 42, epicoele 21, standard scale 45 and tested table platform 3.Realize standard
The tested table of table calibrating.
As shown in figure 4, opening pneumatic operated valve V 4, pneumatic operated valve V5, pneumatic operated valve 6, pneumatic operated valve V 8, other valve closings.Piston
The piston of formula gas flow standard device 2 is moved, and natural gas exports the tested table flowed through in tested table platform 3 from epicoele 21 in system, is returned
Cavity of resorption 22 is flowed to, the tested table of piston type gas flow standard calibrating is realized.
As shown in figure 5, opening pneumatic operated valve V 4, pneumatic operated valve V5, pneumatic operated valve 6, pneumatic operated valve V 9, other valve closings.Start
Explosion-proof fan 42, in system natural gas enter from the tested input of table platform 3, through being detected table, from the output end stream of tested table platform 3
Go out, forced circulation, the tested table durability of test.
Claims (7)
1. a kind of gas Actual flow test device with self-calibration function, it includes air supply system（1）, piston type gas flow mark
Quasi- device（2）With gas flow standard system（4）, it is characterised in that：The gas flow standard system（4）Including standard scale（45）
And explosion-proof fan（42）, standard scale（45）Pneumatic operated valve V7 and explosion-proof fan that output end passes through setting（42）Input is connected, institute
State piston type gas flow standard（2）Separate epicoele is divided into by piston（21）And cavity of resorption（22）, cavity of resorption（22）It is logical
Cross the pneumatic operated valve V8 and explosion-proof fan for setting（42）Input is connected, standard scale（45）Output end and cavity of resorption（22）Between be serially connected with
Tested table platform（3）, the air supply system（1）Including nitrogen air accumulator（14）With natural gas air accumulator（12）, natural gas air accumulator
（12）Output end is connected with check-valves V10, check-valves V10 output ends, standard scale（45）Input and nitrogen air accumulator（14）It is defeated
Go out end to be interconnected, check-valves V10 inputs, explosion-proof fan（42）Output end respectively with epicoele（21）Connection.
2. a kind of gas Actual flow test device with self-calibration function according to claim 1, it is characterised in that：It is described
Natural gas air accumulator（12）Input is connected with natural air-air source by the pressure-reducing valve V13 for setting（11）, pressure-reducing valve V13 with it is natural
Gas air accumulator（12）Input connectivity part is connected with ball valve V15, and the ball valve V15 other ends are connected with the bleeder pipe with atmosphere
（5）.
3. a kind of gas Actual flow test device with self-calibration function according to claim 2, it is characterised in that：It is described
Pressure-reducing valve V13 is connected with vavuum pump with the ball valve V15 connectivity parts（13）.
4. a kind of gas Actual flow test device with self-calibration function according to claim 1, it is characterised in that：It is described
Standard scale（45）Input is in series with pneumatic operated valve V3, standard scale（45）Two ends of being connected with pneumatic operated valve V3 are parallel with pneumatic operated valve V4.
5. a kind of gas Actual flow test device with self-calibration function according to claim 1, it is characterised in that：It is described
Explosion-proof fan（42）It is electrically connected with frequency converter（44）, explosion-proof fan（42）Input, output end are connected to flow control valve
（43）, thermoregulator（41）.
6. a kind of gas Actual flow test device with self-calibration function according to claim 1, it is characterised in that：It is described
Nitrogen air accumulator（14）Input is connected with Nitrogen source gases by the pressure-reducing valve V1 for setting（15）.
7. a kind of gas Actual flow test device with self-calibration function according to claim 1 and 2, it is characterised in that：
Natural gas air accumulator（12）Output end be connected with ball valve V12 and pneumatic operated valve V11 in turn.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621129740.6U CN206208353U (en) | 2016-10-17 | 2016-10-17 | A kind of gas Actual flow test device with self-calibration function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621129740.6U CN206208353U (en) | 2016-10-17 | 2016-10-17 | A kind of gas Actual flow test device with self-calibration function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108982173A (en) * | 2018-08-27 | 2018-12-11 | 武汉理工大学 | Gas sampling analysis system and its method |
| CN114136409A (en) * | 2020-09-04 | 2022-03-04 | 成都秦川物联网科技股份有限公司 | True gas flow experiment system and method |
-
2016
- 2016-10-17 CN CN201621129740.6U patent/CN206208353U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108982173A (en) * | 2018-08-27 | 2018-12-11 | 武汉理工大学 | Gas sampling analysis system and its method |
| CN114136409A (en) * | 2020-09-04 | 2022-03-04 | 成都秦川物联网科技股份有限公司 | True gas flow experiment system and method |
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