CN105911224A - Gas distribution method and gas distribution device for checking SF6 (sulfur hexafluoride) analyzer - Google Patents
Gas distribution method and gas distribution device for checking SF6 (sulfur hexafluoride) analyzer Download PDFInfo
- Publication number
- CN105911224A CN105911224A CN201610319945.9A CN201610319945A CN105911224A CN 105911224 A CN105911224 A CN 105911224A CN 201610319945 A CN201610319945 A CN 201610319945A CN 105911224 A CN105911224 A CN 105911224A
- Authority
- CN
- China
- Prior art keywords
- gas
- mass flow
- flow controller
- static mixer
- sample
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0006—Calibrating gas analysers
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Accessories For Mixers (AREA)
Abstract
The invention provides a gas distribution method and a gas distribution device for checking an SF6 (sulfur hexafluoride) analyzer. The gas distribution method comprises the following steps of mixing SF6 gas and sample gas under the control of mass flow controllers, and thinning the concentration of the sample gas; mixing the thinned sample gas and the SF6 gas under the control of the mass flow controllers, and thinning the concentration of the sample gas for the second time; mixing the sample gas after second time of thinning and the SF6 gas under the control of the mass flow controllers, and thinning the sample gas for the third time. The gas distribution device is characterized in that a pressure relief valve, a first mass flow controller, an electromagnetic valve, a first static mixer, a second mass flow controller, a second static mixer, a third mass flow controller and a third static mixer are sequentially arranged at the end, connecting with an SF6 gas cylinder, of a main gas path; the SF6 gas cylinder is connected with the input end of the second static mixer through a fourth mass flow controller, and is connected with the input end of the third static mixer through a fifth mass flow controller; each sample gas cylinder is respectively communicated with a main gas path through a branch pipeline, and a sixth mass flow controller and the electromagnetic valve are arranged on the branch pipeline.
Description
Technical field
The present invention provides a kind of sulfur hexafluoride analyser verification air distributing method and air distributing device, specifically refers to use three grades of dilutions
Technology makes the method and device of low concentration gas.
Background technology
Sulfur hexafluoride gas has good insulation and arc quenching characteristic, has been widely used in gas insulated electric apparatus.In recent years
Along with extra-high voltage alternating current-direct current, transformer station puts into operation, and a large amount of voltage levels sulfur hexafluoride electrical equipments are included into daily technology
In supervision work, now use SF more6Gas decomposition product instrument, SF6SF implemented by gas purity instrument etc.6The quality prison of electrical equipment
Workman makees.
For guaranteeing apparatus measures accuracy, need the above-mentioned instrument of periodic check, use distributing instrument preparation bid more current experiment the indoor
Gas is to SF6Analyser verifies, and there are the following problems for existing distribution technology: the most advanced distribution that currently employed mass flowmenter controls
Instrument maximum single channel proportioning (volume ratio) is up to 1:70, and the minimum gas concentration (volume ratio) that can prepare is 14286ppm,
When laboratory verification sulfur hexafluoride decomposition product instrument, required gas least concentration is 2ppm, first adopts in actual checking procedure
The gas 1 of 50ppm it is about, after chromatograph is quantitative with syringe quantitative method compound concentration in steel cylinder；Then, with gas
1, as source of the gas, makes the gas of 2ppm by distributing instrument, the method exist complex operation, inefficient, accuracy ground,
It is easily introduced the problems such as other impurity, therefore needs a kind of easy to operate, air distribution efficiency is high, accuracy is good distribution technology badly.
Summary of the invention
It is an object of the invention to provide one can overcome drawbacks described above, easy to operate, air distribution efficiency is high, preparation gas concentration scope
Wide sulfur hexafluoride analyser verification air distributing method and air distributing device.Its technical scheme is:
A kind of sulfur hexafluoride analyser verification air distributing method, it is characterised in that employing following steps: 1) open sample gas gas simultaneously
Bottle and SF6Gas cylinder first is given vent to anger the electromagnetic valve in gas circuit, the mass flow controller in respective gas circuit control flow to first
Static mixer output gas, gas mixes in static mixer, and sample gas is diluted, and least concentration is 10000ppm；
2) SF is opened6Gas cylinder second is given vent to anger the electromagnetic valve in gas circuit, from SF6Gas cylinder second is given vent to anger the SF in gas circuit6Gas and
Once the sample gas after dilution controls flow through respective mass flow controller respectively, to second static mixer output gas,
Sample gas after dilution is again mixed in static mixer and is diluted for the first time, and sample gas least concentration is 100ppm；3)
Open SF6Gas cylinder the 3rd is given vent to anger the electromagnetic valve in gas circuit, from SF6Gas cylinder the 3rd is given vent to anger the SF in gas circuit6Gas and second time
Sample gas after dilution controls flow through respective mass flow controller respectively, to the 3rd static mixer output gas, and second
Sample gas after secondary dilution is again mixed in static mixer and is diluted, and the sample gas least concentration after so far third time dilution is
1ppm。
Described sulfur hexafluoride analyser verification air distributing method, gas in each sample gas gas cylinder is different, step 1) in can be with
Time open multiple sample gas gas cylinder, or only open a sample gas gas cylinder.
A kind of device realizing sulfur hexafluoride analyser verification air distributing method, including SF6Gas cylinder, multiple sample gas gas cylinder and master
Gas circuit, SF6The output of gas cylinder terminates the input of main gas circuit, it is characterised in that: main gas circuit is from connecting SF6The outfan of gas cylinder
Initiate and be sequentially provided with air relief valve, electromagnetic valve, the first mass flow controller, the first static mixer, the second mass flow control
Device, the second static mixer, the 3rd mass flow controller and the 3rd static mixer, SF6The outfan of gas cylinder is also through main gas
Electromagnetic valve on road and be provided with the gas circuit of the 4th mass flow controller and connect that the second mass flow controller is static with second to be mixed
Main gas circuit between clutch, the electromagnetic valve in main gas circuit and be provided with the gas circuit of the 5th mass flow controller and connect the 3rd mass
Main gas circuit between flow controller and the 3rd static mixer；The outfan of each sample gas gas cylinder is respectively through being sequentially provided with decompression
Valve, the 6th mass flow controller connect main gas circuit with the branch road of electromagnetic valve, and junction point is positioned at the input of the first static mixer.
Its operation principle is: to prepare SO2As a example by gas, it is first turned on SO2On electromagnetic valve on gas cylinder branch road and main gas circuit
Electromagnetic valve, close second, third, the 4th and the 5th mass flow controller, SO2Gas is just by the 6th mass stream on branch road
Amount controller controls to inject in main gas circuit continuously, SF6SF in gas cylinder6Gas is just controlled even by the first mass flow controller
Continuing and inject in main gas circuit, two kinds of gas mix homogeneously in the first static mixer, to SO2Gas carries out diluting for the first time,
Obtainable SO2Gas least concentration is 10000ppm；Open the second mass flow controller and the 4th mass stream the most simultaneously
Amount controller, for the first time the gas after dilution by the second mass flow controller control continuously in main gas circuit to the second static mixing
Device injects, SF simultaneously6SF in gas cylinder6Gas also controls continuously second quiet in main gas circuit through the 4th mass flow controller
State blender injects, SO2Gas is diluted in the second static mixer further, obtainable SO2Gas least concentration
For 100ppm；Open the 3rd mass flow controller and the 5th mass flow controller, the gas after second time dilution after more simultaneously
Body is controlled to inject to the 3rd static mixer in main gas circuit continuously by the 3rd mass flow controller, SF simultaneously6In gas cylinder
SF6The 3rd static mixer that gas controls continuously in main gas circuit through the 5th mass flow controller injects, SO2Gas is
Three static mixers are diluted further, is finally made the gas of desired concn, the obtainable SO of this process2Gas is
Low concentration is 1ppm.Particularly as follows:
If SO 1. need to be prepared2Gas concentration scope is: CSO2>=10000ppm, it is only necessary to dilution for the first time can complete gas
Preparation；
If SO 2. need to be prepared2Gas concentration scope is: 10000ppm >=CSO2>=100ppm, obtains after dilution for the first time
Concentration is the SO of 10000ppm2Gas, then after the second mass flowmenter and the second static mixer, gas can be completed and join
System；
If SO 3. need to be prepared2Gas concentration scope is: 100ppm >=CSO2>=1ppm, obtains concentration after dilution for the first time
SO for 10000ppm2Gas, then after the second mass flowmenter, the second static mixer, it is thus achieved that gas concentration is 100
Ppm, after the 3rd mass flowmenter, the 3rd static mixer, can complete gas preparation.
The present invention compared with prior art, has an advantage in that:
1, this device uses graduation three gas technology, and single dilutions ratio is up to 1:100, and can prepare least concentration is 1ppm gas,
This device for formulating have easy to operate, air distribution efficiency is excellent, accuracy is high and avoids introducing the advantages such as other impurity；
2, the dynamic air-distributing device that the present invention provides can meet three sulfur hexafluoride analysers by gas circuit parallel connection tapping device simultaneously
Verification demand, greatly improve verification efficiency.
Accompanying drawing explanation
Fig. 1 is the wiring diagram of the embodiment of the present invention.
In figure: 1, SF6Gas cylinder 2, sample gas gas cylinder 3, air relief valve the 4, first mass flow controller 5, electricity
Magnet valve the 6, first static mixer the 7, second mass flow controller the 8, second static mixer the 9, the 3rd
Mass flow controller the 10, the 3rd static mixer the 11, the 4th mass flow controller the 12, the 5th mass flow
Controller the 13, the 6th mass flow controller
Detailed description of the invention
By the following examples present disclosure is illustrated in further detail.In the embodiment shown in fig. 1: sample
Gas bottle 2 has SO2Gas cylinder, H2The gas cylinder of 4 kinds of gases such as S gas cylinder.Main gas circuit is from connecting SF6The outfan of gas cylinder 1 initiates
It is sequentially provided with air relief valve 3, electromagnetic valve the 5, first mass flow controller the 4, first static mixer the 6, second mass flow
Controller the 7, second static mixer the 8, the 3rd mass flow controller 9 and the 3rd static mixer 10, SF6Gas cylinder 1
The outfan also electromagnetic valve 5 in main gas circuit and be provided with the gas circuit of the 4th mass flow controller 11 and connect the second mass flow
Main gas circuit between controller 7 and the second static mixer 8, the electromagnetic valve 5 in main gas circuit and be provided with the 5th mass stream
A gas circuit for amount controller 12 connects in the main gas circuit between the 3rd mass flow controller 9 and the 3rd static mixer 10；Often
The outfan of individual sample gas gas cylinder 2 respectively through be sequentially provided with air relief valve the 3, the 6th mass flow controller 13 and electromagnetic valve 5
Road connects main gas circuit, and junction point is positioned at the input of the first static mixer 6.
Preparation SO2Gas: be first turned on SO2Electromagnetic valve 5 on sample gas gas cylinder 2 branch road and the electromagnetic valve 5 in main gas circuit, close
Close the second mass flow controller the 7, the 3rd mass flow controller the 9, the 4th mass flow controller 11 and the 5th mass stream
Amount controller 12, SO2Gas just is controlled to inject in main gas circuit continuously from the 6th mass flow controller on branch road, SF6
SF in gas cylinder 16Gas just is controlled to inject in main gas circuit continuously from the first mass flow controller 4, and two kinds of gases are first
Mix homogeneously in static mixer 6, to SO2Gas carries out diluting for the first time, obtainable SO2Gas least concentration is 10000
ppm；Open the second mass flow controller 7 and the 4th mass flow controller 11, for the first time the gas after dilution the most simultaneously
Body is controlled to inject to the second static mixer 8 in main gas circuit continuously by the second mass flow controller 7, SF simultaneously6Gas cylinder 1
Interior SF6The second static mixer 8 that gas also controls continuously in main gas circuit through the 4th mass flow controller 11 injects,
SO2Gas is diluted in the second static mixer 8 further, obtainable SO2Gas least concentration is 100ppm；
Opening the 3rd mass flow controller 9 and the 5th mass flow controller 12 after again, the gas after second time dilution is by the simultaneously
Three mass flow controllers 9 control to inject to the 3rd static mixer 10 in main gas circuit continuously, SF simultaneously6In gas cylinder 1
SF6The 3rd static mixer 10 that gas controls continuously in main gas circuit through the 5th mass flow controller 12 injects, SO2Gas
Body is diluted in the 3rd static mixer 10 further, finally makes the gas of desired concn, and this process is obtainable
SO2Gas least concentration is 1ppm.
Claims (3)
1. a sulfur hexafluoride analyser verification air distributing method, it is characterised in that employing following steps: 1) open sample gas simultaneously
Gas cylinder and SF6Gas cylinder first is given vent to anger the electromagnetic valve in gas circuit, the mass flow controller in respective gas circuit control flow to first
Individual static mixer output gas, gas mixes in static mixer, and sample gas is diluted, and least concentration is 10000ppm；
2) SF is opened6Gas cylinder second is given vent to anger the electromagnetic valve in gas circuit, from SF6Gas cylinder second is given vent to anger the SF in gas circuit6Gas and
Once the sample gas after dilution controls flow through respective mass flow controller respectively, to second static mixer output gas,
Sample gas after dilution is again mixed in static mixer and is diluted for the first time, and sample gas least concentration is 100ppm；3)
Open SF6Gas cylinder the 3rd is given vent to anger the electromagnetic valve in gas circuit, from SF6Gas cylinder the 3rd is given vent to anger the SF in gas circuit6Gas and second time
Sample gas after dilution controls flow through respective mass flow controller respectively, to the 3rd static mixer output gas, and second
Sample gas after secondary dilution is again mixed in static mixer and is diluted, and the sample gas least concentration after so far third time dilution is
1ppm。
Sulfur hexafluoride analyser verification air distributing method the most according to claim 1, it is characterised in that: each sample gas gas
Gas in Ping is different, step 1) in can open multiple sample gas gas cylinder simultaneously, or only open a sample gas gas cylinder.
3. realize a device for sulfur hexafluoride analyser verification air distributing method, including SF6Gas cylinder (1), multiple sample gas gas
Bottle (2) and main gas circuit, SF6Gas cylinder (1) output terminate main gas circuit input, it is characterised in that: main gas circuit from
Connect SF6The outfan of gas cylinder (1) is initial is sequentially provided with air relief valve (3), electromagnetic valve (5), the first mass flow controller
(4), the first static mixer (6), the second mass flow controller (7), the second static mixer (8), the 3rd mass
Flow controller (9) and the 3rd static mixer (10), SF6The outfan of gas cylinder (1) the also electromagnetic valve in main gas circuit
And be provided with the gas circuit of the 4th mass flow controller (11) to connect the second mass flow controller (7) quiet with second (5)
Main gas circuit between state blender (8), the electromagnetic valve (5) in main gas circuit and be provided with the 5th mass flow controller (12)
Gas circuit connect in the main gas circuit between the 3rd mass flow controller (9) and the 3rd static mixer (10)；Each sample gas
The outfan of gas cylinder (2) is respectively through being sequentially provided with air relief valve (3), the 6th mass flow controller (13) and electromagnetic valve (5)
Branch road connect main gas circuit, junction point is positioned at the input of the first static mixer (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610319945.9A CN105911224A (en) | 2016-05-13 | 2016-05-13 | Gas distribution method and gas distribution device for checking SF6 (sulfur hexafluoride) analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610319945.9A CN105911224A (en) | 2016-05-13 | 2016-05-13 | Gas distribution method and gas distribution device for checking SF6 (sulfur hexafluoride) analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105911224A true CN105911224A (en) | 2016-08-31 |
Family
ID=56749144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610319945.9A Pending CN105911224A (en) | 2016-05-13 | 2016-05-13 | Gas distribution method and gas distribution device for checking SF6 (sulfur hexafluoride) analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105911224A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954652A (en) * | 2019-10-28 | 2020-04-03 | 国网河北省电力有限公司电力科学研究院 | Verification device and verification method |
| CN114137155A (en) * | 2021-11-03 | 2022-03-04 | 力合科技（湖南）股份有限公司 | Flow path design of multi-gas dynamic calibrator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101004241A (en) * | 2007-01-15 | 2007-07-25 | 同济大学 | Air distributing device |
| CN203606339U (en) * | 2013-11-15 | 2014-05-21 | 国家电网公司 | Device for detecting sulfur hexafluoride leakage alarming instrument |
| CN205749438U (en) * | 2016-05-13 | 2016-11-30 | 国家电网公司 | Wide area dynamic gas mixer is used in the verification of sulfur hexafluoride analyser |
-
2016
- 2016-05-13 CN CN201610319945.9A patent/CN105911224A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101004241A (en) * | 2007-01-15 | 2007-07-25 | 同济大学 | Air distributing device |
| CN203606339U (en) * | 2013-11-15 | 2014-05-21 | 国家电网公司 | Device for detecting sulfur hexafluoride leakage alarming instrument |
| CN205749438U (en) * | 2016-05-13 | 2016-11-30 | 国家电网公司 | Wide area dynamic gas mixer is used in the verification of sulfur hexafluoride analyser |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954652A (en) * | 2019-10-28 | 2020-04-03 | 国网河北省电力有限公司电力科学研究院 | Verification device and verification method |
| CN114137155A (en) * | 2021-11-03 | 2022-03-04 | 力合科技（湖南）股份有限公司 | Flow path design of multi-gas dynamic calibrator |
| CN114137155B (en) * | 2021-11-03 | 2024-04-12 | 力合科技（湖南）股份有限公司 | Flow path design of multi-gas dynamic calibrator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205749438U (en) | Wide area dynamic gas mixer is used in the verification of sulfur hexafluoride analyser | |
| CN205746017U (en) | Wide area dynamic air-distributing with pressure and charging system | |
| CN104132237A (en) | Low temperature mixed insulating gas supplementing device | |
| CN105911224A (en) | Gas distribution method and gas distribution device for checking SF6 (sulfur hexafluoride) analyzer | |
| CN109737305B (en) | Inflation device for sulfur hexafluoride and nitrogen mixed gas and operation method of inflation device | |
| CA2401735A1 (en) | Faims apparatus and method using carrier gas of mixed composition | |
| CN203672847U (en) | Portable standard oil sample preparation device for transformer oil dissolved gas | |
| CN107477354A (en) | A kind of sulfur hexafluoride/nitrogen mixed gas aerating device and method | |
| CN106092676A (en) | A kind of SF6analyte multicomponent dynamic air-distributing method | |
| US10746810B2 (en) | Switch apparatus, test apparatus and method for operating a switch apparatus for a measuring device for a transformer | |
| CN105822897A (en) | Method and device for dynamic gas mixing and filling under pressure within wide range | |
| CN203606339U (en) | Device for detecting sulfur hexafluoride leakage alarming instrument | |
| CN203465246U (en) | System for detecting performance of transformer oil chromatograph on-line monitoring device | |
| CN102928519A (en) | Accuracy testing method for oil chromatogram online monitoring device | |
| CN103143280A (en) | Special gas generating device | |
| CN103558346A (en) | Device for checking sulfur hexafluoride leakage alarm apparatus | |
| CN207995051U (en) | Asymmetric waveform generation circuit and ionic migration spectrometer | |
| CN209423361U (en) | A kind of dilution device | |
| CN206420918U (en) | A kind of Two-stage Compression testing needle | |
| CN205902187U (en) | A waveguide system and electron linear accelerator for electron linear accelerator | |
| CN108227767A (en) | A kind of mixed gas concentration real-time monitoring system | |
| CN112763634A (en) | Sample introduction device for sulfur hexafluoride gas field analysis | |
| US11982651B2 (en) | Method for adapting the concentration of a sample gas in a gas mixture to be analysed by a gas chromatograph assembly, and chromatograph assembly therefore | |
| CN106338682B (en) | The test device of driving plate | |
| CN102039092A (en) | Method for preparing oxygen-enriched gas in liquid-phase oxidation process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160831 |