CN203275378U - Simple chromatographic detection device - Google Patents
Simple chromatographic detection device Download PDFInfo
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- CN203275378U CN203275378U CN 201320298435 CN201320298435U CN203275378U CN 203275378 U CN203275378 U CN 203275378U CN 201320298435 CN201320298435 CN 201320298435 CN 201320298435 U CN201320298435 U CN 201320298435U CN 203275378 U CN203275378 U CN 203275378U
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- chromatographic
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Abstract
The utility model discloses a simple chromatographic detection device. The simple chromatographic detection device comprises a quantitative gas inlet unit, a chromatographic column, a gas-sensitive semiconductor sensor, a signal acquisition unit and a power device. After oil and gas are separated, the mixed gas is fed into the quantitative gas inlet unit; under the driving of the power device, the mixed gas is fed into the chromatographic column by the quantitative gas inlet unit so as to carry out gas separation; the separated gas enters the gas-sensitive semiconductor sensor in sequence; the gas-sensitive semiconductor sensor converts a concentration signal of the gas into a voltage signal which is transmitted to the signal acquisition unit for signal acqusition; the signal is transmitted into a calculating device by the signal acquisition unit so as to carry out subsequent calculation. The simple chromatographic detection device disclosed by the utility model has the advantages that air is used as a single power carrier gas, a separation part and a detection part form a simple chromatographic instrument by single filling chromatographic column and a single gas-sensitive semiconductor sensor; the type and the corresponding concentration of the fault gas of a transformer can be fast detected can be fast detected and the operating state of the transformer can be reflected immediately.
Description
Technical field
The utility model relates to the gas analysis instrument apparatus field, is especially a kind of easy gas chromatographic detection device.
Background technology
Analyze the component of oil dissolved gas and content and be and monitor one of effective measures of oil-filled electric equipment safe operation, utilize the gc analysis oil dissolved gas to monitor that the oil-filled electric equipment safe operation has had the use experience of more than 40 year in China.Present domestic power transformer on-line monitoring technique is able to widespread use in each extra-high-speed die mould transformer, and that on-line monitoring equipment is in environment is more abominable, the probability that breaks down is larger, the situation that exists wrong report to fail to report to the state of operating transformer, regularly operating transformer oil being carried out offline inspection becomes situation and becomes.
And the most of off-line chromatograph that uses in the market, detecting device adopts the detecting devices formation detector arrays such as TCD, FID to carry out sample gas and detects, provide gas composition from chromatographic column generally have two to three, for the carrier gas of the power of system generally needs nitrogen, air and hydrogen simultaneously.Whole apparatus structure is complicated, and is bulky, unfavorable carrying, and device generally needs the professional of producer just can keep in repair in case break down.Also need carry out staking-out work during off-line test, whole device increases manpower and materials greatly from preliminary work to expending 2 hours to measuring general needs, and what be unfavorable for off-line device failure gas detects in operating transformer oil at the scene is universal.Therefore, a kind of light and handy, simple and easy chromatograph flexible and convenient operation is demanded needs urgently.
The utility model content
For existing problem in prior art, the purpose of this utility model is to provide a kind of simple and easy chromatographic detection apparatus, as single power carrier gas, separation consists of simple and easy chromatograph with the test section by single chromatography column and single gas sensory sensor by air.Its energy fast detecting goes out kind and the corresponding concentration of transformer failure gas, immediately reflects the state of transformer operation.
to achieve these goals, a kind of simple and easy chromatographic detection apparatus of the utility model, this chromatographic detection apparatus comprises quantitative air admission unit, chromatographic column, the gas sensory sensor, signal gathering unit and propulsion system, mixed gas after gas-oil separation is sent into described quantitative air admission unit, mixed gas is sent into described chromatographic column by quantitative air admission unit and is carried out gas and separate under the drive of described propulsion system, isolated gas enters described gas sensory sensor successively, the gas sensory sensor is converted to voltage signal with the concentration signal of gas, voltage signal is delivered to described signal gathering unit and is carried out signals collecting, by signal gathering unit, signal is sent into and carried out subsequent calculations in calculation element.
Further, isolate H by described mixed gas
2, CO, CH
4, C
2H
4, C
2H
6, C
2H
2
Further, described chromatographic column and described gas sensory sensor setting are provided with attemperating unit in described airtight container in same airtight container, by the temperature in described attemperating unit control airtight container.
Further, the temperature difference of described chromatographic column and described semiconductor transducer is within 0.1 degree.
The utility model adopts air as single power carrier gas, chromatographic column and sensor package is carried out temperature control at a closed container, mixed gas H in measuring transformer oil
2, CO, CH
4, C
2H
4, C
2H
6, C
2H
2Content.
Description of drawings
Fig. 1 is the connection diagram of a kind of simple and easy chromatographic detection apparatus of the utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.
be illustrated in figure 1 as the specific embodiment of a kind of simple and easy chromatographic detection apparatus of the utility model, this chromatographic detection apparatus comprises quantitative air admission unit 1, chromatographic column 9, gas sensory sensor 10, signal gathering unit 11 and propulsion system 7, mixed gas after gas-oil separation is sent in quantitative air admission unit 1, the mobile power source that provides of mixed gas is provided propulsion system 7, the power resources of solenoid valve 6 cutting off when this chromatographic detection apparatus is out of service play the effect of protection filled type chromatographic column 9, pressure transducer 5 monitors propulsion system 7 residue carrier gas situations, timely reminding user to replace propulsion system 7 when carrier gas is finished, the nebulizer gas pressure that voltage stabilizer 3 provides propulsion system 7 is stabilized in the value of needs, the one termination has tensimeter 4, can monitor force value in gas circuit.six-way valve 2 works in sample introduction and non-sample introduction two states with this chromatographic detection apparatus, and quantitatively air admission unit 1 imports mixed gas in chromatographic column 9 by six-way valve 2, and chromatography column 9 is responsible for compound sample gas is separated into one-component H ﹠lt, sub TranNum="95" ﹠gt, 2 ﹠lt, /sub ﹠gt, , CO, CH ﹠lt, sub TranNum="96" ﹠gt, 4 ﹠lt, /sub ﹠gt, , C ﹠lt, sub TranNum="97" ﹠gt, 2 ﹠lt, /sub ﹠gt, H ﹠lt, sub TranNum="98" ﹠gt, 4 ﹠lt, /sub ﹠gt, , C ﹠lt, sub TranNum="99" ﹠gt, 2 ﹠lt, /sub ﹠gt, H ﹠lt, sub TranNum="100" ﹠gt, 6 ﹠lt, /sub ﹠gt, , C ﹠lt, sub TranNum="101" ﹠gt, 2 ﹠lt, /sub ﹠gt, H ﹠lt, sub TranNum="102" ﹠gt, 2 ﹠lt, /sub ﹠gt, sample gas, sample gas passes in gas sensory sensor 10, the one-component gas that gas sensory sensor 10 is responsible for chromatography column 9 is separated is converted to electric signal by concentration signal, capture card 11 carries out the signal conversion with the electric signal of gas sensory sensor 10 outputs, process to provide software to carry out follow-up data, chromatographic column 9 and gas sensory sensor 10 are arranged in same airtight container 8, be provided with attemperating unit in airtight container 8, control the interior temperature of airtight container 8 by attemperating unit, attemperating unit comprises temperature controller 12, heating rod 14 and temperature sensor 13, it is identical with gas sensory sensor 10 temperature that it can protect positive chromatographic column 9, within temperature difference is controlled at positive and negative 0.1 degree.
The non-linear relation of the output of gas sensory sensor 10 and concentration, this also causes generally adopting at present in the algorithm of sensor relative peak height algorithm application to have very large measuring error in system, when larger drift occured the sensor baseline, error can be larger especially.And the utility model employing is demarcated the corresponding resistance change value of sample gas concentration change based on gas sensing resistance, the error that this calibration algorithm can avoid the fluctuation of sensor baseline to cause sample gas to detect.
Present most of off-line gas chromatography is adopted on-the-spot working method of demarcating, and the utility model adopts disposable staking-out work mode, only needs in advance the utility model to be carried out staking-out work, and each test later on is not need to repeat to demarcate.
Gas sensory sensor 10 work in oil gas detection time long after, due to the pollution that is subject to oil vapour, the sensitivity of gas sensing resistance will change.The utility model adopts the Fast Correction technology, namely the utility model is carried out secondary and demarcates, and can revert back the sensor sensitivity of timing signal sensor for the first time.
Above-mentioned example just is used for explanation the utility model, and embodiment of the present utility model is not limited to these examples, and the various embodiments that meet the utility model thought that those skilled in the art make are all within protection domain of the present utility model.
Claims (3)
1. simple and easy chromatographic detection apparatus, it is characterized in that, this chromatographic detection apparatus comprises quantitative air admission unit, chromatographic column, the gas sensory sensor, signal gathering unit and propulsion system, mixed gas after gas-oil separation is sent into described quantitative air admission unit, mixed gas is sent into described chromatographic column by quantitative air admission unit and is carried out gas and separate under the drive of described propulsion system, isolated gas enters described gas sensory sensor successively, the gas sensory sensor is converted to voltage signal with the concentration signal of gas, voltage signal is delivered to described signal gathering unit and is carried out signals collecting, by signal gathering unit, signal is sent into and carried out subsequent calculations in calculation element.
2. simple and easy chromatographic detection apparatus as claimed in claim 1, it is characterized in that, described chromatographic column and described gas sensory sensor setting are provided with attemperating unit in described airtight container in same airtight container, by the temperature in described attemperating unit control airtight container.
3. simple and easy chromatographic detection apparatus as claimed in claim 3, is characterized in that, the temperature difference of described chromatographic column and described semiconductor transducer is within 0.1 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320298435 CN203275378U (en) | 2013-05-28 | 2013-05-28 | Simple chromatographic detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320298435 CN203275378U (en) | 2013-05-28 | 2013-05-28 | Simple chromatographic detection device |
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| Publication Number | Publication Date |
|---|---|
| CN203275378U true CN203275378U (en) | 2013-11-06 |
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ID=49505757
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| CN 201320298435 Expired - Lifetime CN203275378U (en) | 2013-05-28 | 2013-05-28 | Simple chromatographic detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758958A (en) * | 2016-03-01 | 2016-07-13 | 湖南大学 | Quick detector for hydrogen and methane components in respiratory air |
| CN107884328A (en) * | 2017-12-01 | 2018-04-06 | 贵州大学 | A kind of three axle seepage apparatus for measuring mixed gas content change |
| CN114200072A (en) * | 2022-02-21 | 2022-03-18 | 佛山速敏智能仪器科技有限公司 | Method and device for calibrating online monitoring system for dissolved gas in transformer oil |
-
2013
- 2013-05-28 CN CN 201320298435 patent/CN203275378U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758958A (en) * | 2016-03-01 | 2016-07-13 | 湖南大学 | Quick detector for hydrogen and methane components in respiratory air |
| CN107884328A (en) * | 2017-12-01 | 2018-04-06 | 贵州大学 | A kind of three axle seepage apparatus for measuring mixed gas content change |
| CN114200072A (en) * | 2022-02-21 | 2022-03-18 | 佛山速敏智能仪器科技有限公司 | Method and device for calibrating online monitoring system for dissolved gas in transformer oil |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |
|
| CX01 | Expiry of patent term |