CN203396758U - Novel wide-range hydrogen flame ionization detector - Google Patents
Novel wide-range hydrogen flame ionization detector Download PDFInfo
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- CN203396758U CN203396758U CN201320398292.XU CN201320398292U CN203396758U CN 203396758 U CN203396758 U CN 203396758U CN 201320398292 U CN201320398292 U CN 201320398292U CN 203396758 U CN203396758 U CN 203396758U
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- flame ionization
- detecting device
- gas
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- ignition coil
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Abstract
The utility model provides a novel wide-range hydrogen flame ionization detector, belongs to the technical field of flame ionization detectors, and solves the problems of an existing detector that manual ignition exits, a detection range is not wide and the like. The hydrogen flame ionization detector comprises a cylindrical detector shell and a base; a plurality of gas channels for inputting gas into the detector shell are plugged into the base; the detector shell is internally provided with an ignition coil; the ignition coil and gas flows in the gas channels are controlled by an automatic system. The novel wide-range hydrogen flame ionization detector has the advantages of automatic ignition, high accuracy, improvement of instrumental sensitivity and the like.
Description
Technical field
The utility model belongs to flame ionization detector technical field, refers in particular to a kind of novel wide-range flame ionization ditector.
Background technology
Hydrogen flameionization inspection side device (FID) is that to take the flame that hydrogen and air burning generate be the energy, when organic compound enters the flame with hydrogen and oxygen combustion, at high temperature produce chemi-ionization, ionization produces than the ion of the high several orders of magnitude of base flow, under the orientation of high-voltage electric field, form ion current, faint ion current (10
-12～10
-8a) through high resistant (10
6～10
11Ω) amplify, become the electric signal being directly proportional to the organic compound amount that enters flame, therefore can to organism, carry out quantitative test according to the size of signal.
Hydrogen flame detector is due to simple in structure, excellent performance, reliable and stable, easy to operate, so through the development of more than 40 years, the FID structure of today was still without substantial variation.Its principal feature is that nearly all volatile organic compound is all had to response, relative response to all footpaths compounds (carbon number >=3) is almost equal, also almost equal to the relative response of the homolog (carbon number >=3) containing in heteroatomic Hydrocarbon Organic.This gives quantitatively bringing great convenience of compound, and has highly sensitive (10-13～10-10g/s), and base flow is little by (10
-14～10
-13a), the range of linearity is wide by (10
6～10
7), dead volume little (≤1ml), response fast (1ms), can with the direct coupling of capillary column, to gas flow rate, pressure and very degree change the advantages such as insensitive, so become most widely used gas chromatography detector.
Summary of the invention
The purpose of this utility model is to provide a kind of novel wide-range flame ionization ditector, and it systematically controls the flow of air and hydrogen, has promoted analytical applications scope, and instrumental sensitivity is high, and performance is outstanding.
The purpose of this utility model is achieved in that
Novel wide-range flame ionization ditector, it is characterized in that: comprise tubular detecting device housing and base, on described base, peg graft and be provided with the gas passage in a plurality of gas input detector housings, in described detecting device housing, be provided with ignition coil, described ignition coil and the gas flow of gas passage are all controlled by automated system.
In above-mentioned novel wide-range flame ionization ditector, described gas passage comprises air duct, hydrogen passage and make-up gas passage, described air duct communication with detection device enclosure interior, described hydrogen passage and make-up gas channel connection, to the nozzle being located in detecting device housing, are positioned at detecting device housing and are provided with air diffuser.
In above-mentioned novel wide-range flame ionization ditector, described nozzle place is provided with lighter, and described lighter is connected with ignition coil and controls its work by ignition coil.
In above-mentioned novel wide-range flame ionization ditector, also comprise the analysis circuit after detecting device internal combustion, described analysis circuit comprises non-linear amplification module, AD modular converter and the linear amplification module connecting successively.
The utility model compared to existing technology outstanding and useful technique effect is:
In the utility model, there is automatic firing function, and the robotization of the example of the gas mixture ratio in detecting device is controlled, automatically light a fire reaching default blending ratio, omitted the complex operation of existing manual firelock igniting, and further improved accuracy, and having adopted new analysis circuit, the signal intensity after processing is high, improve the sensitivity of instrument, also promoted the applied analysis scope of this structure.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present utility model.
Fig. 2 is the structure principle chart of analysis circuit in the utility model.
Embodiment
Below in conjunction with accompanying drawing, with specific embodiment, the utility model is further described, referring to Fig. 1-2:
Novel wide-range flame ionization ditector, comprise tubular detecting device housing 1 and base 2, described base is provided with the gas passage in a plurality of gas input detector housings, in described detecting device housing, be provided with ignition coil, described ignition coil and the gas flow of gas passage are all controlled by automated system.
It is to adopt EPC system automatically to adjust the ratio of hydrogen sky that above-mentioned automated system is controlled, and adjusts to after burning ratio, and ignition coil is continued just can realize automatic firing function in several seconds conduction time.
Described gas passage comprises air duct 3, hydrogen passage 4 and make-up gas passage 5, described air duct communication with detection device enclosure interior, described hydrogen passage and make-up gas channel connection, to the nozzle 6 being located in detecting device housing, are positioned at detecting device housing and are provided with air diffuser 7.
Above-mentioned hydrogen passage 4 and make-up gas passage 5 are the capillary columns that are wholely set, capillary column be plugged on base and with base seal setting.
Described nozzle place is provided with lighter 8, and described lighter is controlled its work by ignition coil.
In above-mentioned detecting device housing 1, be provided with gas concentration and collect level 9, above-mentioned ignition coil is located to be collected in level.
The required circuit of the above-mentioned interior ignition coil of detecting device housing 1, lighter is all connected with detecting device housing insulated enclosure.
Also comprise the analysis circuit after detecting device internal combustion, described analysis circuit comprises non-linear amplification module 10, AD modular converter 11 and the linear amplification module 12 connecting successively.When detecting device produces signal, when producing less initialize signal, the non-linear amplification module of circuit increases signal amplification factor automatically, the initialize signal making strengthens, then by AD modular converter, be converted to digital signal, by linear amplification system, realize secondary again and amplify, this just provides the sensitivity of instrument greatly.When the initialize signal producing is larger, the nonlinear block of circuit reduces signal amplification factor automatically, signal is strengthened, but be unlikely to saturated, then by AD modular converter, be converted to digital signal, then by linear amplification system, realize secondary and amplify, this had just both improved the sensitivity of instrument greatly, be unlikely to again to produce saturation signal, improve integral sensitivity.
Above-described embodiment is only preferred embodiment of the present utility model, not limits according to this protection domain of the present utility model, therefore: all equivalences of doing according to structure of the present utility model, shape, principle change, within all should being covered by protection domain of the present utility model.
Claims (4)
1. novel wide-range flame ionization ditector, it is characterized in that: comprise tubular detecting device housing and base, described base is provided with the gas passage in a plurality of gas input detector housings, in described detecting device housing, be provided with ignition coil, described ignition coil and the gas flow of gas passage are all controlled by automated system.
2. novel wide-range flame ionization ditector according to claim 1, it is characterized in that: described gas passage comprises air duct, hydrogen passage and make-up gas passage, described air duct communication with detection device enclosure interior, described hydrogen passage and make-up gas channel connection, to the nozzle being located in detecting device housing, are positioned at detecting device housing and are provided with air diffuser.
3. novel wide-range flame ionization ditector according to claim 2, is characterized in that: described nozzle place is provided with lighter, and described lighter is controlled its work by ignition coil.
4. novel wide-range flame ionization ditector according to claim 1, it is characterized in that: also comprise the analysis circuit after detecting device internal combustion, described analysis circuit comprises non-linear amplification module, AD modular converter and the linear amplification module connecting successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320398292.XU CN203396758U (en) | 2013-07-04 | 2013-07-04 | Novel wide-range hydrogen flame ionization detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320398292.XU CN203396758U (en) | 2013-07-04 | 2013-07-04 | Novel wide-range hydrogen flame ionization detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203396758U true CN203396758U (en) | 2014-01-15 |
Family
ID=49908280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320398292.XU Expired - Lifetime CN203396758U (en) | 2013-07-04 | 2013-07-04 | Novel wide-range hydrogen flame ionization detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203396758U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181264A (en) * | 2014-08-19 | 2014-12-03 | 北京大学 | Low-pressure hydrogen flame ionization detector |
| CN105203676A (en) * | 2015-10-22 | 2015-12-30 | 杭州泰丽豪环保科技有限公司 | Hydrogen flame ionization detector suitable for high-pressure, high-temperature and high-humidity environments |
| CN106404969A (en) * | 2016-08-31 | 2017-02-15 | 浙江福立分析仪器股份有限公司 | Flow regulation monitoring system for gas chromatograph and application method thereof |
-
2013
- 2013-07-04 CN CN201320398292.XU patent/CN203396758U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181264A (en) * | 2014-08-19 | 2014-12-03 | 北京大学 | Low-pressure hydrogen flame ionization detector |
| CN104181264B (en) * | 2014-08-19 | 2015-12-30 | 北京大学 | A kind of pressure hydrogen flame ionization detector |
| CN105203676A (en) * | 2015-10-22 | 2015-12-30 | 杭州泰丽豪环保科技有限公司 | Hydrogen flame ionization detector suitable for high-pressure, high-temperature and high-humidity environments |
| CN106404969A (en) * | 2016-08-31 | 2017-02-15 | 浙江福立分析仪器股份有限公司 | Flow regulation monitoring system for gas chromatograph and application method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 317500 Research Park, Wenling Economic Development Zone, Zhejiang Patentee after: ZHEJIANG FULI ANALYTICAL INSTRUMENTS CO.,LTD. Address before: 317500 Wenling Economic Development Zone, Zhejiang, Taizhou Patentee before: ZHEJIANG FULI ANALYTICAL INSTRUMENT Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140115 |
|
| CX01 | Expiry of patent term |