CN106870936A - A kind of CNG filling machines magnitude tracing system - Google Patents
A kind of CNG filling machines magnitude tracing system Download PDFInfo
- Publication number
- CN106870936A CN106870936A CN201710172476.7A CN201710172476A CN106870936A CN 106870936 A CN106870936 A CN 106870936A CN 201710172476 A CN201710172476 A CN 201710172476A CN 106870936 A CN106870936 A CN 106870936A
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- China
- Prior art keywords
- cng
- gas
- calibrated
- magnitude tracing
- measurers
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a kind of CNG filling machines magnitude tracing system, it includes：CNG gas filler measurers to be calibrated, it uses natural gas as calibration medium；CNG filling machine magnitude tracing standard set-ups, it is connected with the CNG gas filler measurers to be calibrated；It is characterized in that：The CNG filling machines magnitude tracing standard set-up is connected to decompression unit, for that will calibrate dielectric film filter.The logical CNG filling machine magnitude tracing systems of the present invention ensure that trade settlement accurately and reliably；And traceability system can not only carry out the actual flow calibration of CNG filling machine device for on-site calibration and provide calibration dielectric film filter technology and method and can be used for laboratory monitoring quantity value comparison and higher level traces to the source the acquisition of reference value.
Description
Technical field
The present invention relates to a kind of traceability system, more particularly to a kind of take compressed natural gas (CNG) as the CNG for calibrating medium
Filling machine magnitude tracing system.
Background technology
In recent years, due to environmental protection the need for and the increasingly in short supply of crude oil wait factors, use clean and green
The energy has turned into the inexorable trend of social development, and natural gas has been widely used for motor vehicle fuel as clean energy resource, with work as
Trend and " the large-scale gas pipeline such as West-east Gas comes into operation, especially country " western gas east that preceding domestic, international energy is used
It is defeated " engineering brings new power to the CNG automobile application of pipeline on the way numerous cities, numerous and confused the building CNG gas stations in each city
If with bus, taxi " oil to gas " as urban environmental protection and the key project of urban energy structural adjustment.
Compressed natural gas (CNG) because of its low cost, pollute small, so that the gasoline, the diesel oil that rise violently instead of oil price are used as the modern times
The fuel of the vehicles.Autoamtic compressed gas filling machine is a kind of measurement system that compressed natural gas is filled for gas combustion automobile gas bomb
System, it includes flowmeter, electronics controlling device, servicing unit and attachment device, and it is mainly used in CNG gas stations for natural gas vapour
Car (NGV) aerating is measured.Fixed according to national metrological regulations due to being related to trade settlement, reply filling machine carries out compulsory verification.
Its magnitude tracing standard utensil is CNG gas filler measurers.And the standard utensil of tracing to the source of the CNG gas filler measurers is
CNG filling machine magnitude tracing standard set-ups.
Existing CNG gas filler measurers are all as calibration medium, for example, generally to use using substitute medium calibration
Pressure-air is calibration medium, when needing to calibrate CNG gas filler measurers, it is necessary to using pressure-air as school
Accurate source of the gas, controls high-pressure air source during calibration, medium flows through to be calibrated CNG gas filler measurers and enter with metered flow weighs
Gas bomb, stops supplying, the net quality of gas bomb pressure-air of weighing when gas storage bottle pressure of weighing reaches preset pressure value,
Compare with CNG gas filler measurer mass numbers are flowed through, provide the error amount or instrument system for being calibrated CNG gas filler measurers
Number and uncertainty, after calibration is finished, the air in gas bomb can be directly discharged in air.
And substitute medium is used as in the existing CNG gas filler measurers for calibrating medium, due to calibration medium component
Difference can produce the fiducial error inconsistent with real flow medium to bring certain uncertainty to CNG gas filler measurers,
And, it is necessary to CNG filling machines are linked into special high-pressure air source, calibration method is complicated, it is impossible to reach on-line calibration mesh during calibration
, influence the reliability of calibration.Therefore, CNG filling machine magnitude tracing standard set-ups are designed, is set up with natural gas (CNG) as school
The national rule and technical specification of quasi- medium, improving magnitude tracing system turns into the urgently technical issues that need to address.
The content of the invention
The purpose of the present invention is to set up a set of CNG filling machines magnitude tracing system, lifts the inspection of CNG filling machine magnitude tracings
Survey level, fills up domestic this aspect blank, for CNG natural gases trade supervision provides technical support.
The invention provides a kind of CNG filling machines magnitude tracing system, it includes：CNG gas filler measurers to be calibrated,
It uses natural gas as calibration medium；CNG filling machine magnitude tracing standard set-ups, itself and the CNG aeratings machine examination to be calibrated
Determine device connection；The CNG filling machines magnitude tracing standard set-up is connected to decompression unit, for that will calibrate dielectric film filter.
Wherein, the CNG gas filler measurers to be calibrated at least include the first intake valve, the first magnetic valve, the first pressure
Power table, mass flowmenter and the first control system.
Wherein, first control system is used to be controlled the mass flowmenter.
Wherein, the CNG gas filler measurers to be calibrated include air filling gun valve, by the air filling gun valve and standard set-up
Access point be attached.
Wherein, flow indicator, second pressure table, gas are at least included in the CNG filling machines magnitude tracing standard set-up
Bottle valve, gas bomb, electronic balance and the second control system.
Wherein, when being calibrated, make calibration medium in source of the gas simultaneously by CNG gas filler measurers to be calibrated and
CNG filling machine magnitude tracing standard set-ups, and CNG gas filler measurers to be calibrated are gathered simultaneously and CNG filling machine values trace back
Mass flow values in the standard set-up of source, by comparing the mass flow measurement result of the two to CNG aeratings machine examination to be calibrated
Determine device to be calibrated.
With high accuracy electronic balance as Main Regulator, weighing system class of accuracy adds better than being calibrated CNG the present invention
Mechanism of qi calibrating installation 1/3, meets the requirement of the measurement instrument transmission of quantity value system table；Returned with domestic advanced natural gas (CNG)
Receipts technology, multi-stage pressure regulating skid mounted equipment ensures that calibration medium CNG is fully reclaimed, and directly discharge is caused to reduce energy waste and CNG
To Atmospheric Ozone Layer Depletion；System high pressure, air-tightness is strong, safe and reliable, high degree of automation, data acquisition process elder generation
Enter, field calibration is convenient, flexible.
The present invention builds autoamtic compressed gas filling machine calibrating by developing CNG gas filler measurer magnitude tracing systems
Device magnitude tracing system detection capability, it is ensured that trade settlement is accurately and reliably；CNG filling machines magnitude tracing system of the invention was both
The actual flow calibration of autoamtic compressed gas filling machine calibrating installation can be carried out and calibration dielectric film filter technology and method is provided and can be used for again
Laboratory monitoring quantity value comparison and higher level trace to the source the acquisition of reference value.
Brief description of the drawings
Fig. 1 is the structural representation of CNG filling machines magnitude tracing system of the invention.
Specific embodiment
For the ease of understanding the present invention, embodiments of the invention are illustrated below in conjunction with the accompanying drawings, people in the art
Member should be appreciated that following explanations only to facilitate being explained to invention, and not as the specific restriction to its scope.
Fig. 1 is the structural representation of CNG filling machines magnitude tracing system of the invention.As shown in figure 1, the CNG aeratings
Machine magnitude tracing system at least includes：CNG gas filler measurers 2 to be calibrated, CNG filling machine magnitude tracings standard set-up 9 with
And the grade part of decompression unit 17.
Refering to Fig. 1, wherein, source of the gas 1 is connected to the natural gas line of gas station, using natural gas as calibration medium, with
The gas used during filling machine real work is improved as calibration medium, uniformity when can guarantee that calibration with real work
The accuracy of calibration.
The source of the gas 1 is connected to the CNG gas filler measurers 2 to be calibrated, in the CNG filling machines calibrating dress to be calibrated
At least include the first intake valve 3, the first magnetic valve 4, first pressure table 5, the control system 7 of mass flowmenter 6 and first in putting 2,
First control system 7 is used to be controlled the mass flowmenter 6, is examined and determine when to the CNG filling machines to be examined and determine
When, it is not necessary to CNG filling machines are disassembled from source of the gas 1, it is only necessary to which it is normally linked into CNG filling machine magnitude tracing marks
Standard apparatus 9.
The CNG gas filler measurers 2 to be calibrated have air filling gun valve 8, are motor-driven usually by the air filling gun valve 8
Car or others treat that aerator carries out aerating, when being calibrated to the CNG gas filler measurers 2 to be calibrated, will be described
Air filling gun valve 8 is attached with the access point 10 of CNG filling machine magnitude tracings standard set-up 9, from the gas of the outflow of air filling gun valve 8
Entered into the CNG filling machines magnitude tracing standard set-up 9 by described access point 10.
At least include flow indicator 11, second pressure table 12, gas in the CNG filling machines magnitude tracing standard set-up 9
Bottle valve 13, gas bomb 14, the control system 16 of electronic balance 15 and second, wherein, the gas bomb 14 and the gas cylinder valve
13 connections, the gas bomb 14 is weighed on balance 15 positioned at described, and the balance 15 of weighing is weighed to gas bomb 14；Pass through
The gas of the outflow of air filling gun valve 8 passes sequentially through access point 10, second pressure table 12 and gas cylinder valve 13 and enters into gas bomb 14,
CNG gas filler measurers are calibrated using CNG filling machine magnitude tracings standard set-up 9.
For CNG filling machine magnitude tracings standard set-up 9, balance 15 of weighing should ensure that CNG gas filler measurers
The expanded uncertainty of each flow area Measurement Result is not more than 6.5 × 10-4(k=2)；Analytical balance accuracy of weighing grade
ForLevel, the calibrating of low discharge gas filler measurer or calibration are met with balance：Maximum capacity 200kg, actual graduation value 2g, inspection
Calibration 10g；Middle flow gas filler measurer calibrating or calibration are met with balance：Maximum capacity 600kg, actual graduation value
10g, calibrating indexing 50g, and with levelling device；Wherein the maximum working pressure (MWP) 25MPa of gas bomb 14, rated operating pressure
20MPa, the tolerable 37.5MPa pressure of air container (gas cylinder), and air-tightness is strong；Air container volume：Inspection low discharge filling machine
When should be not less than 90L, 300L should be not less than in inspection during flow filling machine；Wherein 0~40MPa of gage pressure scope, the degree of accuracy
Grade is not less than 0.4 grade；Pressure regulator range of regulation is 0~25MPa；Gas bomb is lifted using fork truck, for by gas storage
Bottle is placed on to weigh and balance or it is forked from balance of weighing, and the fork truck load-carrying can be more than 1000kg.
For CNG filling machines magnitude tracing system of the invention, when being calibrated, make the calibration medium in source of the gas 1
Simultaneously by CNG gas filler measurers 2 to be calibrated and CNG filling machine magnitude tracings standard set-up 9, and gather simultaneously to be calibrated
Mass flow values in CNG gas filler measurers 2 and CNG filling machine magnitude tracings standard set-up 9, by comparing the two
Flow measurement is calibrated to CNG gas filler measurers.Calibration is finished, and calibration medium (CNG) is through the pressure regulation of decompression unit 17
City gas main line 18 is entered by low-pressure pipe network intake valve 28 afterwards.
The decompression unit 17 at least includes inlet ball valve 19, the 3rd pressure gauge 20, the first filter 21, the first pressure regulator valve
22nd, the 4th pressure gauge 23, the second pressure regulator valve 24, the 5th pressure gauge 25, diffusion valve 26 and vent ball valve 27；The decompression unit 17 leads to
Cross low-pressure pipe network intake valve 28 and be connected to city gas main line 18.Gas pressure is (20~25) at the import of decompression unit 17
MPa；By after the first filter 21 and the first pressure regulator valve 22, the gas in pipeline have passed through one-level decompression, after decompression in pipeline
Pressure be (7~8) MPa；By after the second pressure regulator valve 24, the gas pressure in pipeline is changed into 2MPa after second depressurized.Institute
The maximum working pressure (MWP) preferably 25MPa of decompression unit 1 is stated, maximum tolerable pressure is preferably 37.5MPa, wherein discharging minimum pressure
It is preferred that being smaller than 0.5MPa.
The entrance point of decompression unit 17 is connected with gas bomb 14, and CNG filling machines magnitude tracing is examined and determine and filled by the decompression unit 17
High-pressure natural gas in the gas bomb 14 put finally import city pipe in being delivered to pipeline network of fuel gas in city after second depressurized
Netizen uses source of the gas terminal.Alternatively, reclaimed by the pipeline that the gas after second depressurized can enter source of the gas 1
Utilize.The entrance point of decompression unit 17 is connected with gas bomb 14, and the port of export of decompression unit 17 is connected with city network management interface.Decompression unit
Entrance point at set high-pressure hose, bolt-type pipette tips by high-pressure hose access decompression unit, the bolt-type pipette tips with weigh
Bolt-type gun platform on device matches.Gases at high pressure will through the first filter 21, the first pressure regulator valve 22 and the second pressure regulator valve 24
Gas pressure is reduced to 2MPa, is conveyed toward urban pipe network.Gases at high pressure in gas bomb are through the filter on decompression unit and pressure regulation
Valve, combustion gas can be used as city webmaster.Flexible pipe connection, the decompression are set between decompression unit 17 and low-pressure pipe network intake valve 28
Diffusion valve is provided with the port of export of sled 17, it is dense to detect that diffusion valve arranges natural gas with hand-held concentration of natural gas detector
Degree, when concentration of natural gas reaches more than 95%, you can conveyed toward pipe network.When need not to pipe network in convey when, can pass through
Diffusion valve on decompression unit 17 is emptied to air.Decompression unit exit port footpath is preferably DN20, equipped with DN20 flexible pipes, the flexible pipe
One end is connected with the outlet of decompression unit 17, and the other end is connected to gas distributing system.
With high accuracy electronic scale as Main Regulator, weighing system class of accuracy is better than being calibrated CNG aeratings the present invention
Machine calibrating installation 1/3, meets the requirement of the measurement instrument transmission of quantity value system table；Skill is reclaimed with advanced natural gas (CNG)
Art, multi-stage pressure regulating skid mounted equipment ensures that calibration medium CNG is fully reclaimed, reduce energy waste and CNG directly discharge cause it is right
Atmospheric Ozone Layer Depletion；System high pressure, air-tightness is strong, and safe and reliable, high degree of automation, data acquisition process is advanced, existing
Field calibration, it is convenient, flexible.
The present invention uses the actual flow calibration scheme of domestic initiation, to be calibrated actually used Jie of CNG gas filler measurers
Matter CNG is measurement fluid, is reduced because the uncertainty that calibration media components difference is brought influences, and improves calibration reliability.Calibration
Finish, calibration medium (CNG) enters air delivering pipeline or in line storage tank after decompression unit pressure regulation, discharge effect is monitored by pressure measxurement
Really, related specifications requirement is reached.
The present invention builds autoamtic compressed gas filling machine calibrating by developing CNG gas filler measurer magnitude tracing systems
Device magnitude tracing system detection capability, it is ensured that trade settlement is accurately and reliably；Traceability system of the invention can both carry out compression day
The actual flow calibration and offer calibration dielectric film filter technology and method of right gas CNG gas filler measurers can be used for the laboratory area of a room again
Value compares the acquisition of reference value of being traced to the source with higher level.
Although it is understood that the present invention is disclosed as above with preferred embodiment, but above-described embodiment and being not used to
Limit the present invention.For any those of ordinary skill in the art, in the case where technical solution of the present invention ambit is not departed from,
Many possible variations and modification are all made to technical solution of the present invention using the technology contents of the disclosure above, or is revised as
With the Equivalent embodiments of change.Therefore, every content without departing from technical solution of the present invention, according to technical spirit pair of the invention
Any simple modification, equivalent variation and modification made for any of the above embodiments, still fall within the scope of technical solution of the present invention protection
It is interior.
Claims (6)
1. a kind of CNG filling machines magnitude tracing system, it includes：CNG gas filler measurers to be calibrated, it uses natural gas to make
It is calibration medium；CNG filling machine magnitude tracing standard set-ups, it is connected with the CNG gas filler measurers to be calibrated；It is special
Levy and be：The CNG filling machines magnitude tracing standard set-up is connected to decompression unit, for that will calibrate dielectric film filter.
2. CNG filling machines magnitude tracing system as claimed in claim 1, it is characterised in that：The CNG aeratings machine examination to be calibrated
Determining device at least includes the first intake valve, the first magnetic valve, first pressure table, mass flowmenter and the first control system.
3. CNG filling machines magnitude tracing system as claimed in claim 2, it is characterised in that：It is right that first control system is used for
The mass flowmenter is controlled.
4. CNG filling machines magnitude tracing system as claimed in claim 3, it is characterised in that：The CNG aeratings machine examination to be calibrated
Determining device includes air filling gun valve, and the air filling gun valve and the access point of standard set-up are attached.
5. CNG filling machines magnitude tracing system as claimed in claim 1, it is characterised in that：The CNG filling machines magnitude tracing
At least include flow indicator, second pressure table, gas cylinder valve, gas bomb, electronic balance and the second control system in standard set-up
System.
6. CNG filling machines magnitude tracing system as claimed in claim 1, it is characterised in that：When being calibrated, in making source of the gas
Calibration medium is gathered simultaneously simultaneously by CNG gas filler measurers to be calibrated and CNG filling machine magnitude tracing standard set-ups
Mass flow values in CNG gas filler measurers to be calibrated and CNG filling machine magnitude tracing standard set-ups, by comparing two
The mass flow measurement result of person is calibrated to CNG gas filler measurers to be calibrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710172476.7A CN106870936B (en) | 2017-03-22 | 2017-03-22 | CNG gas dispenser quantity value traceability system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710172476.7A CN106870936B (en) | 2017-03-22 | 2017-03-22 | CNG gas dispenser quantity value traceability system |
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| Publication Number | Publication Date |
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| CN106870936A true CN106870936A (en) | 2017-06-20 |
| CN106870936B CN106870936B (en) | 2022-07-01 |
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| CN201710172476.7A Active CN106870936B (en) | 2017-03-22 | 2017-03-22 | CNG gas dispenser quantity value traceability system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676626A (en) * | 2017-11-22 | 2018-02-09 | 内蒙古自治区计量测试研究院 | It is a kind of to provide the calibration system traced to the source for LNG gas filler measurers |
| CN110726459A (en) * | 2019-09-11 | 2020-01-24 | 张家港氢云新能源研究院有限公司 | Hydrogenation machine on-site verification device and method |
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| CN206669335U (en) * | 2017-03-22 | 2017-11-24 | 内蒙古自治区计量测试研究院 | A kind of CNG filling machines magnitude tracing system |
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| Publication number | Publication date |
|---|---|
| CN106870936B (en) | 2022-07-01 |
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