CN206450641U - A kind of detector of sulfur hexafluoride decomposition product - Google Patents
A kind of detector of sulfur hexafluoride decomposition product Download PDFInfo
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- CN206450641U CN206450641U CN201620999333.4U CN201620999333U CN206450641U CN 206450641 U CN206450641 U CN 206450641U CN 201620999333 U CN201620999333 U CN 201620999333U CN 206450641 U CN206450641 U CN 206450641U
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- chromatographic column
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Abstract
The utility model embodiment discloses a kind of detector of sulfur hexafluoride decomposition product, including：Quantity tube, the first six-way valve, the second six-way valve, the first chromatographic column, the second chromatographic column and detector.In the detector of sulfur hexafluoride decomposition product disclosed in the utility model, quantity tube is connected by the first six-way valve with the first chromatographic column, first chromatographic column is connected by the second six-way valve with the second chromatographic column, second chromatographic column is connected with detector, realize the qualitative and quantitative analysis to a variety of catabolites of sulfur hexafluoride, sensitivity is high, test limit is low, to SO2F2、CO、SO2F and CF4Gas Monitoring lower-cut be respectively less than 0.05ppm, and the gas chromatograph is simple and compact for structure, highly reliable, user-friendly for operation, sensitivity is high, automaticity is high, can on-line continuous use.
Description
Technical field
The utility model is related to field of gas detection, more particularly to a kind of detector of sulfur hexafluoride decomposition product.
Background technology
With developing rapidly for power industry, sulfur hexafluoride electrical equipment quantity is on the increase.Electric arc, spark discharge,
Under the factors such as high temperature, sulfur hexafluoride gas easily ionizes decomposition, and its catabolite occurs anti-with the moisture in electrical equipment, oxygen
Should, generate SO2、H2The acidic materials such as S, HF, and SF4、 SOF2、SF2、SO2F2The material extremely strong etc. toxicity and corrosivity.Cause
This, the detection to sulfur hexafluoride decomposition product becomes more and more important.
At present, the method being most widely used in sulfur hexafluoride decomposition product detection field is gas chromatography, is also state
The detection methods recommended jointly of mark GB/T18867-2002 and IEC60480-2004, can, with detected components it is many, detect sensitive
The advantages of spending of a relatively high, quantitative accurate, it is easy to accomplish automation.
However, can be used to analyze sulfur hexafluoride characteristic feature component SO2F2、CF4、SO2F gas chromatographic detection technology compared with
The accuracy of detection of few and conventional at present sulfur hexafluoride gas chromatographic detection instrument is not enough, it is impossible to meet ppm levels six in actual production
The detection of sulfur fluoride catabolite.
Utility model content
The utility model embodiment discloses a kind of detector of sulfur hexafluoride decomposition product, including：Quantity tube, six are led to
Valve, chromatographic column and detector.In the detector of sulfur hexafluoride decomposition product disclosed in the utility model, quantity tube passes through the one or six
Port valve is connected with the first chromatographic column, and the first chromatographic column is connected by the second six-way valve with the second chromatographic column, the second chromatographic column and inspection
Device connection is surveyed, the qualitative and quantitative analysis to a variety of catabolites of sulfur hexafluoride is realized, sensitivity is high, test limit is low, to SO2F2、
CO、SO2F and CF4Gas Monitoring lower-cut be respectively less than 0.05ppm, and the gas chromatograph is simple and compact for structure, highly reliable, behaviour
Make hommization, sensitivity is high, automaticity is high, can on-line continuous use.
The utility model embodiment provides a kind of detector of sulfur hexafluoride decomposition product, including：Quantity tube, the one or six
Port valve, the second six-way valve, the first chromatographic column, the second chromatographic column and detector；
The quantity tube is connected by the first six-way valve with the first chromatographic column；
First chromatographic column is connected by the second six-way valve with the second chromatographic column；
Second chromatographic column is connected with detector.
Preferably, the sample introduction end of the quantity tube is connected with the port of first six-way valve, its sample outlet end and described the
The port connection of one six-way valve, the port of first six-way valve is connected with the sample introduction end of first chromatographic column.
Preferably, the sample outlet end of first chromatographic column is connected with the port of second six-way valve, and the described 2nd 6 leads to
The port of valve is connected with the sample introduction end of second chromatographic column.
Preferably, the port of first six-way valve is connected with sample gas source of the gas.
Preferably, a kind of detector for sulfur hexafluoride decomposition product that the utility model embodiment is provided also includes：Ratio
Valve and the first pressure-reducing valve, the second pressure-reducing valve；
The proportioning valve and second pressure-reducing valve are arranged on the port and the sample gas source of the gas of first six-way valve
On the pipeline of connection.
Preferably, a kind of detector for sulfur hexafluoride decomposition product that the utility model embodiment is provided also includes：Threeway
Valve, gas purifier；
The port of first six-way valve is connected with the first port of the triple valve, the second port of the triple valve with
The sample outlet end connection of the gas purifier.
Preferably, the sample introduction end of the gas purifier is connected with carrier gas source of the gas.
Preferably, the first decompression is provided with the pipeline that the sample introduction end of the gas purifier is connected with the carrier gas source of the gas
Valve.
Preferably, the third connectivity mouth of the triple valve is connected with the port of second six-way valve.
Preferably, a kind of detector for sulfur hexafluoride decomposition product that the utility model embodiment is provided also includes：Control
Module, the control module is microcomputer or the instrument panel with liquid crystal display.
As can be seen from the above technical solutions, the utility model embodiment has advantages below：
The utility model embodiment provides a kind of detector of sulfur hexafluoride decomposition product, including：Quantity tube, the one or six
Port valve, the second six-way valve, the first chromatographic column, the second chromatographic column and detector.Sulfur hexafluoride decomposition product disclosed in the present embodiment
Detector in, quantity tube is connected by the first six-way valve with the first chromatographic column, and the first chromatographic column passes through the second six-way valve and
Two chromatographic columns are connected, and the second chromatographic column is connected with detector, realize the qualitative, quantitative point to a variety of catabolites of sulfur hexafluoride
Analysis, sensitivity is high, test limit is low, to SO2F2、CO、SO2F and CF4Gas Monitoring lower-cut be respectively less than 0.05ppm, and the gas phase
Chromatograph is simple and compact for structure, highly reliable, user-friendly for operation, sensitivity is high, automaticity is high, can on-line continuous use.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, before creative labor is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of the detector of sulfur hexafluoride decomposition product provided in the utility model embodiment
Figure；
A kind of detector of sulfur hexafluoride decomposition products of the Fig. 2 to be provided in the utility model embodiment is in gas sampling
The structural representation of state；
A kind of detector of sulfur hexafluoride decomposition products of the Fig. 3 to be provided in the utility model embodiment is in gas analysis
The structural representation of state；
A kind of detector of sulfur hexafluoride decomposition products of the Fig. 4 to be provided in the utility model embodiment switches in gas
The structural representation of state.
Wherein, marked in figure as described below：
11. carrier gas source of the gas 12, the six-way valve 16. of 22. pressure-reducing valve, 13. gas purifier, 14. triple valve 15 first are determined
The sample gas source of the gas 23. of 17. first chromatographic column of buret, 18. second 19. second chromatographic column of six-way valve, 20. detector 21. compares
Example valve
Embodiment
The utility model embodiment discloses a kind of detector of sulfur hexafluoride decomposition product, including：Quantity tube, the one or six
Port valve, the second six-way valve, the first chromatographic column, the second chromatographic column and detector.Sulfur hexafluoride disclosed in the utility model decomposes production
In the detector of thing, quantity tube is connected by the first six-way valve with the first chromatographic column, the first chromatographic column by the second six-way valve with
Second chromatographic column is connected, and the second chromatographic column is connected with detector, realizes the qualitative, quantitative to a variety of catabolites of sulfur hexafluoride
Analysis, sensitivity is high, test limit is low, to SO2F2、CO、SO2F and CF4Gas Monitoring lower-cut be respectively less than 0.05ppm, and the gas
Chromatography is simple and compact for structure, highly reliable, user-friendly for operation, sensitivity is high, automaticity is high, can on-line continuous make
With.
Referring to Fig. 1, one of a kind of detector of the sulfur hexafluoride decomposition product provided in the utility model embodiment
Embodiment includes：Quantity tube 16, the first chromatographic column 15, the second chromatographic column 18, the first chromatographic column 17, the second chromatographic column 19 and inspection
Survey device 20；
Quantity tube 16 is connected by the first six-way valve 15 with the first chromatographic column 17；
First chromatographic column 17 is connected by the second six-way valve 18 with the second chromatographic column 19；
Second chromatographic column 19 is connected with detector 20.
In the present embodiment, the standard sample volume of quantity tube 16 is 5ml, because sample introduction gas is to gas in quantity tube 16
Continuous displacement, make the gas in quantity tube 16 that there is good representativeness；First chromatographic column 17, the second chromatographic column 19 are located at electricity
Hinder in silk temperature programming case, the first chromatographic column 17, the second chromatographic column 19 are that (5m, filler is styrene hexichol to 1/8 packed column
Polymer), a variety of catabolites of sulfur hexafluoride background gas condition, especially SO can be efficiently separated2F、SO2F2Separation.Resistance
The temperature-control range of silk temperature programming is normal temperature~350 DEG C；Detector 20 is a helium ion pulse detector, the helium ion
Pulse detector is pulsed discharge helium ionization detector, to improve the detection sensitivity to being detected gas, be the experiment proved that
As long as sampling 1ml standard specimen gas, the gas sample with regard to ppm ranks can be detected.
The sample introduction end of quantity tube 16 is connected with the 6th port of the first six-way valve 15, its sample outlet end and the first six-way valve 15
Third connectivity mouth is connected, and the second port of the first six-way valve 15 is connected with the sample introduction end of the first chromatographic column 17.
The sample outlet end of first chromatographic column 17 is connected with the first port of the second six-way valve 18, and the second of the second six-way valve 18
Port is connected with the sample introduction end of the second chromatographic column 19.
5th port of the first six-way valve 15 is connected with sample gas source of the gas 21.
A kind of detector for sulfur hexafluoride decomposition product that the utility model embodiment is provided also includes：Proportioning valve 23 and
One pressure-reducing valve 12, the second pressure-reducing valve 22, wherein, proportioning valve 23 is used to control sample gas to enter chromatogram by certain flow and pressure
Instrument, improves the accuracy rate of sample gas analysis；
The 5th port that the pressure-reducing valve 22 of proportioning valve 23 and second is arranged on the first six-way valve 15 is connected with sample gas source of the gas 21
Pipeline on.
A kind of detector for sulfur hexafluoride decomposition product that the utility model embodiment is provided also includes：Triple valve 14, gas
Body purifier 13；
First port of the first six-way valve 15 is connected with the first port of triple valve 14, the second port and gas of triple valve 14
The sample outlet end connection of body purifier 13.
The sample introduction end of gas purifier 13 is connected with carrier gas source of the gas 11, wherein, carrier gas is helium.
The first pressure-reducing valve 12 is provided with the pipeline that the sample introduction end of gas purifier 13 is connected with carrier gas source of the gas 11.
The third connectivity mouth of triple valve 14 is connected with the second port of the second six-way valve 18.
In the present embodiment, the third connectivity mouth of the second six-way valve 18 is carrier gas inlet, the 4th port of the second six-way valve 18
It is connected with the 5th port by stainless steel tube, the 6th port is directly emptied.
A kind of detector for sulfur hexafluoride decomposition product that the utility model embodiment is provided also includes：Control module, institute
Control module is stated for microcomputer or the instrument panel with liquid crystal display, net can be provided to each device in chromatograph
Network remote management, is conducive to instrument and the remote monitoring of data；Chromatographic revertive control is operated with computer.
In the present embodiment, the analysis process of sulfur hexafluoride decomposition product includes：
1st, initialize
Init state is as shown in figure 1, carrier gas (helium) enters detector after gas purifier 12, and carrier gas passes through gas
Purity after purifier is up to 99.99999%, and sulfur hexafluoride sample gas enters detector after proportioning valve 23.
2nd, gas sampling
Gas sampling state is as shown in Fig. 2 port of the sulfur hexafluoride sample bottle after proportioning valve 23 with the first six-way valve 15
5 connections, gas is connected after being come out through the 6th port of the first six-way valve 15 with quantity tube 16, and the outlet of quantity tube 16 enters the one or six
It is empty through the 4th port heel row after the third connectivity mouth of port valve 15.Helium enters the one or six after gas purifier 12 after triple valve 13
First port of port valve 15, carrier gas enters the first chromatographic column 17 after being flowed out through the second port, enters after flowing through the first chromatographic column 17
Second six-way valve 18, flows out after being entered by the first port from the second port, and into detector after the second chromatographic column 19.Helium
Third connectivity mouth of another road gas of gas triple valve through the second six-way valve 18 flows out after entering from the 6th port to be emptied.
3rd, gas analysis
After instrument baseline stability to be detected, instrument enters analysis state, as shown in Figure 3.First six-way valve 15 is cut first
Change, after the first port of the helium through the first six-way valve 15 enters, the sulfur hexafluoride sample gas in quantity tube 16 is carried from second
Port outflow after enter the first chromatographic column 17, by the first chromatographic column 17 separate after have controlled through the second six-way valve 18 after enter inspection
Device 20 is surveyed to be detected.At this moment the 4th port of the first six-way valve 15 is connected with the 5th port, the gas in sample gas bottle 21
Directly emptied after the first six-way valve 15.
4th, gas switches
Due to the characteristic gas under the conditions of sulfur hexafluoride sample gas Main Analysis sulfur hexafluoride background gas, to realize gas
Limited separation between component, need to empty the sulfur hexafluoride gas of the first chromatographic column 17, but gas analysis is when proceeding to 10min,
Gas switching is performed, specifically as shown in Figure 4.When gas switches, the first six-way valve 15 is motionless, and the second six-way valve 18 is switched over,
After gas in first chromatographic column 17 is entered by the port of the second six-way valve 18 first, emptied by the second port.Gas switches
After about 5min, state shown in Fig. 3 is switched to again, and the gas that at this moment carrier gas is carried in the first chromatographic column 17 enters the second chromatographic column
19, detected after separation into detector 20.After the completion of sample gas sampling, Fig. 2 states are back switched to.
A kind of detector of sulfur hexafluoride decomposition product provided by the utility model is described in detail above, it is right
In those of ordinary skill in the art, according to the thought of the utility model embodiment, in specific embodiments and applications
It will change, in summary, this specification content should not be construed as to limitation of the present utility model.
Claims (10)
1. a kind of detector of sulfur hexafluoride decomposition product, it is characterised in that including：Quantity tube, the first six-way valve, the two or six lead to
Valve, the first chromatographic column, the second chromatographic column and detector；
The quantity tube (16) is connected by the first six-way valve (15) with the first chromatographic column (17)；
First chromatographic column (17) is connected by the second six-way valve (18) with the second chromatographic column (19)；
Second chromatographic column (19) is connected with detector (20).
2. the detector of sulfur hexafluoride decomposition product according to claim 1, it is characterised in that the quantity tube (16)
Sample introduction end is connected with the 6th port of first six-way valve (15), its sample outlet end and the threeway of first six-way valve (15)
Mouth connection, the second port of first six-way valve (15) is connected with the sample introduction end of first chromatographic column (17).
3. the detector of sulfur hexafluoride decomposition product according to claim 2, it is characterised in that first chromatographic column
(17) sample outlet end is connected with the first port of second six-way valve (18), the second port of second six-way valve (18) with
The sample introduction end connection of second chromatographic column (19).
4. the detector of sulfur hexafluoride decomposition product according to claim 1, it is characterised in that first six-way valve
(15) the 5th port is connected with sample gas source of the gas (21).
5. the detector of sulfur hexafluoride decomposition product according to claim 4, it is characterised in that also include：Proportioning valve
And the first pressure-reducing valve (12), the second pressure-reducing valve (22) (23)；
The proportioning valve (23) and second pressure-reducing valve (22) are arranged on the 5th port and the institute of first six-way valve (15)
On the pipeline for stating sample gas source of the gas (21) connection.
6. the detector of the sulfur hexafluoride decomposition product according to claim 1 to 5 any one, it is characterised in that also wrap
Include：Triple valve (14), gas purifier (13)；
First port of first six-way valve (15) is connected with the first port of the triple valve (14), the triple valve (14)
The second port be connected with the sample outlet end of the gas purifier (13).
7. the detector of sulfur hexafluoride decomposition product according to claim 6, it is characterised in that the gas purifier
(13) sample introduction end is connected with carrier gas source of the gas (11).
8. the detector of sulfur hexafluoride decomposition product according to claim 7, it is characterised in that the gas purifier
(13) the first pressure-reducing valve (12) is provided with the pipeline that sample introduction end is connected with the carrier gas source of the gas (11).
9. the detector of sulfur hexafluoride decomposition product according to claim 6, it is characterised in that the triple valve (14)
Third connectivity mouth is connected with the second port of second six-way valve (18).
10. the detector of sulfur hexafluoride decomposition product according to claim 1, it is characterised in that also include：Control mould
Block, the control module is microcomputer or the instrument panel with liquid crystal display.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085280A (en) * | 2018-10-16 | 2018-12-25 | 广东电网有限责任公司 | A kind of system of quantitative detection sulfur hexafluoride gas ingredient |
| CN110514755A (en) * | 2019-08-16 | 2019-11-29 | 国家能源集团宁夏煤业有限责任公司 | Chromatographic detection device and method for detecting organic sulfur |
| CN110609105A (en) * | 2019-09-30 | 2019-12-24 | 广州供电局有限公司 | Automatic sample introduction device for gas chromatography |
| CN110726794A (en) * | 2019-10-23 | 2020-01-24 | 朗析仪器（上海）有限公司 | Analysis system for full analysis of decomposition products in sulfur hexafluoride mixed gas |
| CN112578018A (en) * | 2020-11-24 | 2021-03-30 | 广东电网有限责任公司电力科学研究院 | Novel device and method for testing decomposition and composite characteristics of environment-friendly insulating gas |
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2016
- 2016-08-30 CN CN201620999333.4U patent/CN206450641U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085280A (en) * | 2018-10-16 | 2018-12-25 | 广东电网有限责任公司 | A kind of system of quantitative detection sulfur hexafluoride gas ingredient |
| CN109085280B (en) * | 2018-10-16 | 2024-04-12 | 广东电网有限责任公司 | System for quantitatively detecting sulfur hexafluoride gas component |
| CN110514755A (en) * | 2019-08-16 | 2019-11-29 | 国家能源集团宁夏煤业有限责任公司 | Chromatographic detection device and method for detecting organic sulfur |
| CN110514755B (en) * | 2019-08-16 | 2022-03-22 | 国家能源集团宁夏煤业有限责任公司 | Chromatographic detection device and method for detecting organic sulfur |
| CN110609105A (en) * | 2019-09-30 | 2019-12-24 | 广州供电局有限公司 | Automatic sample introduction device for gas chromatography |
| CN110726794A (en) * | 2019-10-23 | 2020-01-24 | 朗析仪器（上海）有限公司 | Analysis system for full analysis of decomposition products in sulfur hexafluoride mixed gas |
| CN112578018A (en) * | 2020-11-24 | 2021-03-30 | 广东电网有限责任公司电力科学研究院 | Novel device and method for testing decomposition and composite characteristics of environment-friendly insulating gas |
| CN112578018B (en) * | 2020-11-24 | 2022-01-11 | 广东电网有限责任公司电力科学研究院 | Device and method for testing decomposition and composite characteristics of insulating gas |
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