CN205861636U - A kind of gas chromatogram flame ionization ditector - Google Patents
A kind of gas chromatogram flame ionization ditector Download PDFInfo
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- CN205861636U CN205861636U CN201620835929.0U CN201620835929U CN205861636U CN 205861636 U CN205861636 U CN 205861636U CN 201620835929 U CN201620835929 U CN 201620835929U CN 205861636 U CN205861636 U CN 205861636U
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- electromagnetic valve
- flame ionization
- gas passage
- ionization ditector
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Abstract
The open a kind of gas chromatogram flame ionization ditector of this utility model, described flame ionization ditector includes the ion chamber being sequentially connected with, amplifier, data acquisition unit, controller, bottom, described ion chamber is provided with gas passage, described gas passage includes carrier gas passage, hydrogen paths, the first electromagnetic valve it is provided with in described carrier gas passage, the second electromagnetic valve it is provided with on described hydrogen paths, bottom, described ion chamber is provided with air duct, the 3rd electromagnetic valve it is provided with on described air duct, the upper end of described gas passage is provided with lighter, described first electromagnetic valve, described second electromagnetic valve, described 3rd electromagnetic valve, described lighter is connected with described controller respectively, top, described ion chamber is provided with gas outlet, described gas outlet is provided with positive pressure mechanism.Can automatically adjust gas flow proportioning and carry out automatic ignition and burning, it is ensured that the stability of ion Indoor Combustion, easy to operate.
Description
Technical field
This utility model relates to chromatographic detector technical field, is specifically related to a kind of gas chromatogram hydrogen flameionization and examines
Survey device.
Background technology
Flame ionization ditector is that one of detector commonly used by laboratory gas chromatograph device.This detector is with hydrogen
The flame generated with air burning is the energy, when organic compound enters with hydrogen and the flame of oxygen combustion, at high temperature produces
Biochemical ionization, ionization produces than base flow the ion of high several orders of magnitude, under the orientation of high voltage electric field, forms ion
Stream, faint ion stream (10-12～10-8A) amplifies through high resistant, becomes and is directly proportional to the organic compound amount entering flame
The signal of telecommunication, according to the size of signal, Organic substance is carried out quantitative analysis, flame ionization ditector is to absolutely mostly Organic substance
There is response, and highly sensitive, it is one of common detector the most frequently used in current gas chromatogram.
Existing flame ionization ditector typically use manual ignition, need before igniting first to regulate air and hydrogen
Valve, igniting to be confirmed success after, need again to readjust the valve of air and hydrogen so that it is normal combustion, operation is compared
Loaded down with trivial details, controllability is not strong, and automaticity is the highest；In addition the gas outlet of flame ionization ditector is open design, when
During atmospheric pressure change, Organic substance ionization process in diffusible hydrogen flame can be affected and flame may be sent out by certain
Raw quencher, affects the sensitivity of detector.
Utility model content
In view of this, the application provides a kind of gas chromatogram flame ionization ditector, can automatically adjust gas
Flowrate proportioning carries out automatic ignition and burning, it is to avoid the complex operation of manual ignition, easy to operate, improves conventional efficient；
Can prevent the factors such as the temperature of external environment, humidity, pressure from affecting the normal combustion of ion chamber's flame, it is ensured that in ion chamber
The stability of burning, it is to avoid cancellation.
For solving above technical problem, the technical scheme that this utility model provides is a kind of gas chromatogram hydrogen flame ion
Change detector, ion chamber that described flame ionization ditector includes being sequentially connected with, amplifier, data acquisition unit, controller,
Bottom, described ion chamber is provided with gas passage, and described gas passage includes carrier gas passage, hydrogen paths, in described carrier gas passage
Being provided with the first electromagnetic valve, described hydrogen paths is provided with the second electromagnetic valve, bottom, described ion chamber is provided with air duct,
Being provided with the 3rd electromagnetic valve on described air duct, the upper end of described gas passage is provided with lighter, described first electromagnetic valve,
Described second electromagnetic valve, described 3rd electromagnetic valve, described lighter are connected with described controller respectively, and top, described ion chamber sets
Being equipped with gas outlet, described gas outlet is provided with positive pressure mechanism.
Further, described carrier gas passage is positioned on the main road of described gas passage, and described hydrogen paths is positioned at described gas
On the branch road of body passage.
Further, described lighter is provided above emitter stage, and described emitter stage is provided above collector, described
Emitter-base bandgap grading is connected respectively at described amplifier with described collector.
Further, described positive pressure mechanism includes pressure detector, make-up gas passage, and described pressure detector is arranged at institute
Stating gas outlet, described make-up gas passage is positioned at side, top, described ion chamber, described pressure detector and described controller
Connect.
Further, also to include that make-up gas electromagnetic valve, described make-up gas electromagnetic valve are arranged at described for described positive pressure mechanism
On make-up gas passage, described make-up gas electromagnetic valve connects described controller.
Further, described gas outlet is additionally provided with deflector, and described deflector is arranged at described make-up gas and leads to
Road and the top of junction, ion chamber.
Further, described deflector is 20 45 ° with the angle of the inwall of described gas outlet.
Further, described air duct is arranged above gas diffuser.
Technical scheme is compared to prior art, and its detailed description is as follows: technical scheme provides one
Gas chromatogram flame ionization ditector, described detector is provided with controller, is provided above igniting at gas passage
Device, is provided with carrier gas passage and hydrogen paths at gas passage, is respectively provided with the first electromagnetism in carrier gas passage and hydrogen paths
Valve and the second electromagnetic valve, bottom, ion chamber is provided with air duct, described air duct is provided with the 3rd electromagnetic valve, Qi Zhong
One electromagnetic valve, the second electromagnetic valve, the 3rd electromagnetic valve are connected with controller respectively, additionally, lighter is also connected with controller, at this
In flame ionization ditector described in application, burn as the energy in atmosphere with hydrogen, utilize carrier gas to carry tested component
Entering ion chamber with hydrogen (combustible gas) from gas passage, air is combustion-supporting gas, and tested component is separated into positive and negative in flame
Ion, negative ions moves to respective opposite polarity electrode in the electric field that two interelectrode DC voltages are formed, and is formed
Ion stream be collected pole and collect, and by current signal transfer to amplifier, data acquisition unit collects the letter of the data after amplification
Number be transmitted further to controller, due to controller connect have the first electromagnetic valve, the second electromagnetic valve, the 3rd electromagnetic valve and lighter all with
Controller connects, and therefore, it can automatically adjust gas flow proportioning and carries out automatic ignition, is automatically adjusted gas after igniting again
Flowrate proportioning realizes stable burning, whole ignition process is the most controlled, it is to avoid the complex operation of manual ignition, automaticity
Height, easy to operate, improve conventional efficient.Additionally, in technical scheme, gas outlet is additionally provided with positive press
Structure, forms certain pressure-fired at gas outlet, prevents outside air from entering, prevent simultaneously the temperature of external environment, humidity,
The factors such as pressure affect the normal combustion of ion chamber's flame, do not affect simultaneously hydrogen flame combustion in ion chamber carbon dioxide and
The discharge of steam, additionally, be provided with pressure detector in positive pressure mechanism, pressure detector is connected with controller, additionally sets
Being equipped with make-up gas electromagnetic valve, described make-up gas electromagnetic valve is also connected to controller, is exported by pressure detector detected gas
Air pressure, and then adjust make-up gas flow in real time, further ensure the stability of ion Indoor Combustion, it is to avoid cancellation.
Having the beneficial effects that of technical scheme: described gas chromatogram flame ionization ditector can be automatic
Adjust gas flow proportioning and carry out automatic ignition and burning, it is to avoid the complex operation of manual ignition, easy to operate, improve reality
Test efficiency；Can prevent the factors such as the temperature of external environment, humidity, pressure from affecting the normal combustion of ion chamber's flame, it is ensured that
The stability of ion Indoor Combustion.
Accompanying drawing explanation
Fig. 1 is the structural representation of herein described gas chromatogram flame ionization ditector.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the technical solution of the utility model, below in conjunction with being embodied as
The utility model is described in further detail for example, it is clear that described embodiment is only that this utility model part is real
Execute example rather than whole embodiments.Based on the embodiment in this utility model, those of ordinary skill in the art are not making
The every other embodiment obtained under creative work premise, broadly falls into the scope of this utility model protection.
A kind of gas chromatogram flame ionization ditector as shown in Figure 1, described flame ionization ditector bag
Include be sequentially connected with ion chamber 1, amplifier 2, data acquisition unit 3, controller 4, bottom, described ion chamber 1 is provided with gas passage
5, described gas passage 5 includes that carrier gas passage 6, hydrogen paths 7, described carrier gas passage 6 are positioned at the main road of described gas passage 5
On, described hydrogen paths 7 is positioned on the branch road of described gas passage 5, and described carrier gas passage 6 is provided with the first electromagnetic valve 8, institute
Stating and be provided with the second electromagnetic valve 9 on hydrogen paths 7, bottom, described ion chamber 1 is provided with air duct 10, described air duct 10
On be provided with the 3rd electromagnetic valve 11, described air duct 10 is arranged above gas diffuser 17, described gas passage 5
Upper end is provided with lighter 18, and described lighter 18 is provided above emitter stage 19, and described emitter stage 19 is provided above collecting
Pole 20, described emitter stage 19 is connected respectively at described amplifier 2 with described collector 20, described first electromagnetic valve 8, described second
Electromagnetic valve 9, described 3rd electromagnetic valve 11, described lighter 18 are connected with described controller 4 respectively, and top, described ion chamber 1 sets
It is equipped with gas outlet 12, at described gas outlet 12, is provided with positive pressure mechanism.
Wherein, described positive pressure mechanism includes that pressure detector 13, make-up gas passage 14, described pressure detector 13 are arranged at
At described gas outlet 12, described make-up gas passage 14 is positioned at side, top, described ion chamber 1, described pressure detector 13 and institute
Stating controller 4 to connect, described make-up gas passage 14 is provided with make-up gas electromagnetic valve 15, described make-up gas electromagnetic valve 15 connects institute
State controller 4.
Additionally, be additionally provided with deflector 16 at described gas outlet 12, described deflector 16 is arranged at described make-up gas and leads to
Road 14 and the top of junction, ion chamber 1, described deflector 16 is 20 45 ° with the angle of the inwall of described gas outlet 12.
Above-mentioned described gas chromatogram flame ionization ditector can adjust gas flow proportioning automatically to be carried out certainly
Dynamic igniting and burning, it is to avoid the complex operation of manual ignition, easy to operate, improve conventional efficient；External environment can be prevented
Temperature, humidity, the factor such as pressure affect the normal combustion of ion chamber 1 flame, it is ensured that in ion chamber 1, burning stablizes
Property.
Below it is only preferred implementation of the present utility model, it is noted that above-mentioned preferred implementation should not regard
For to restriction of the present utility model, protection domain of the present utility model should be as the criterion with claim limited range.For
For those skilled in the art, without departing from spirit and scope of the present utility model, it is also possible to make some
Improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (8)
1. a gas chromatogram flame ionization ditector, it is characterised in that: described flame ionization ditector includes
The ion chamber that is sequentially connected with, amplifier, data acquisition unit, controller, bottom, described ion chamber is provided with gas passage, described gas
Body passage includes carrier gas passage, hydrogen paths, and described carrier gas passage is provided with the first electromagnetic valve, and described hydrogen paths is arranged
There are the second electromagnetic valve, bottom, described ion chamber to be provided with air duct, described air duct is provided with the 3rd electromagnetic valve, described
The upper end of gas passage is provided with lighter, described first electromagnetic valve, described second electromagnetic valve, described 3rd electromagnetic valve, described
Lighter is connected with described controller respectively, and top, described ion chamber is provided with gas outlet, and described gas outlet is provided with
Positive pressure mechanism.
A kind of gas chromatogram flame ionization ditector the most according to claim 1, it is characterised in that: described carrier gas
Passage is positioned on the main road of described gas passage, and described hydrogen paths is positioned on the branch road of described gas passage.
A kind of gas chromatogram flame ionization ditector the most according to claim 1, it is characterised in that: described igniting
Device is provided above emitter stage, and described emitter stage is provided above collector, and described emitter stage and described collector are respectively at institute
State amplifier to connect.
A kind of gas chromatogram flame ionization ditector the most according to claim 1, it is characterised in that: described malleation
Mechanism includes pressure detector, make-up gas passage, and described pressure detector is arranged at described gas outlet, and described make-up gas leads to
Road is positioned at side, top, described ion chamber, and described pressure detector is connected with described controller.
A kind of gas chromatogram flame ionization ditector the most according to claim 4, it is characterised in that: described malleation
Mechanism also includes that make-up gas electromagnetic valve, described make-up gas electromagnetic valve are arranged on described make-up gas passage, described make-up gas electromagnetism
Valve connects described controller.
A kind of gas chromatogram flame ionization ditector the most according to claim 4, it is characterised in that: described gas
Exit is additionally provided with deflector, and described deflector is arranged at the top of described make-up gas passage and junction, ion chamber.
A kind of gas chromatogram flame ionization ditector the most according to claim 6, it is characterised in that: described water conservancy diversion
Plate is 20 45 ° with the angle of the inwall of described gas outlet.
A kind of gas chromatogram flame ionization ditector the most according to claim 1, it is characterised in that: described air
Passage is arranged above gas diffuser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620835929.0U CN205861636U (en) | 2016-08-02 | 2016-08-02 | A kind of gas chromatogram flame ionization ditector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620835929.0U CN205861636U (en) | 2016-08-02 | 2016-08-02 | A kind of gas chromatogram flame ionization ditector |
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| CN205861636U true CN205861636U (en) | 2017-01-04 |
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| CN201620835929.0U Active CN205861636U (en) | 2016-08-02 | 2016-08-02 | A kind of gas chromatogram flame ionization ditector |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109521131A (en) * | 2018-12-04 | 2019-03-26 | 杭州谱育科技发展有限公司 | Chromatographic detection apparatus and method |
| CN110702824A (en) * | 2019-10-21 | 2020-01-17 | 江苏天瑞仪器股份有限公司 | Automatic ignition control method of hydrogen flame ionization detector |
| CN112285191A (en) * | 2020-09-20 | 2021-01-29 | 杭州谱育科技发展有限公司 | Apparatus and method for detecting gas |
| CN113701568A (en) * | 2020-05-23 | 2021-11-26 | 杨玉香 | Firework lift-off device array and operation method thereof |
-
2016
- 2016-08-02 CN CN201620835929.0U patent/CN205861636U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109521131A (en) * | 2018-12-04 | 2019-03-26 | 杭州谱育科技发展有限公司 | Chromatographic detection apparatus and method |
| CN110702824A (en) * | 2019-10-21 | 2020-01-17 | 江苏天瑞仪器股份有限公司 | Automatic ignition control method of hydrogen flame ionization detector |
| CN113701568A (en) * | 2020-05-23 | 2021-11-26 | 杨玉香 | Firework lift-off device array and operation method thereof |
| CN112285191A (en) * | 2020-09-20 | 2021-01-29 | 杭州谱育科技发展有限公司 | Apparatus and method for detecting gas |
| CN112285191B (en) * | 2020-09-20 | 2023-06-20 | 杭州谱育科技发展有限公司 | Apparatus and method for detecting gas |
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