CN206450639U - Flame ionization ditector - Google Patents
Flame ionization ditector Download PDFInfo
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- CN206450639U CN206450639U CN201621432276.8U CN201621432276U CN206450639U CN 206450639 U CN206450639 U CN 206450639U CN 201621432276 U CN201621432276 U CN 201621432276U CN 206450639 U CN206450639 U CN 206450639U
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- nozzle
- flame ionization
- housing section
- ionization ditector
- surge drum
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Abstract
The utility model is related to a kind of flame ionization ditector, the flame ionization ditector includes base portion, housing section and the compressed part that order is detachably fastenedly connected, air chamber is formed between the base portion and housing section, combustion chamber is formed between housing section and compressed part；The surge drum is provided with the combustion chamber, the collector is connected with the surge drum；The base portion is provided with hydrogen gas circuit and the nozzle, and the nozzle is connected with the polarization pole, and the hydrogen gas circuit is communicated with the nozzle；The housing section is provided with air gas circuit, and the air gas circuit is connected with the air chamber；The housing section sets polarity installation site；The compressed part is used to compress the surge drum and the housing section, the igniter is provided with, for lighting the hydrogen in the nozzle.The flame ionization ditector that the utility model is provided designs that light, space structure is compact, external interference resistance is strong, easily maintenance replacing.
Description
Technical field
The utility model is related to detection field, more particularly to a kind of hydrogen flame ion suitable for portable gas chromatograph
Change detector, especially a kind of miniature flame ionization ditector.
Background technology
Gas-chromatography (Gas Chromatography abbreviation GC) is the great section occurred nineteen fifties
Technological contribution is learned, this is a kind of new separation, analytical technology, and it is all obtained in industry, agricultural, national defence, construction, scientific research
Extensive use.Mewillan and Harley in 1958 etc. succeeds in developing hydrogen flameionization inspection side device (FID) respectively, and it is allusion quotation
The destructiveness of type, mass flow rate sensitive detector, be using hydrogen and air burning generation flame as the energy, when organic compound enter with
The flame of hydrogen and oxygen combustion, produces chemi-ionization at high temperature, and ionization produces the ion of several orders of magnitude higher than base flow,
Under the orientation of high voltage electric field, ion stream is formed, faint ion stream (10-12~10-8A) passes through high resistant (106~1011
Ω) amplify, as the electric signal being directly proportional to the organic compound amount into flame, therefore can be according to the size of signal to having
Machine thing carries out quantitative analysis.
Flame ionization ditector (FID) using organic matter in the presence of hydrogen flame chemi-ionization and form ion
Stream, is detected by means of ion intensity of flow is determined.The detector sensitivity is high, the range of linearity is wide, operating condition is not harsh, noise
Small, dead volume is small, is the conventional detector of GC detection organic compounds.Flame ionization detector is FID (flame
Ionization detector) because it is general all be that hydrogen flame makees ionization source, ionize organic matter, produce micro-current and
The detector of response, so being also flame ionization ditector.
Hydrogen flame detector is due to simple in construction, excellent performance, reliable and stable, easy to operate, so by more than 40 years
Development, the FID structures of today are still without substantial change.In the prior art, surge drum is outstanding puts setting, so sets and causes hydrogen
Flame ionization detector can only be fixed on some place, no longer move.Once mobile, surge drum position will change
Need to readjust, the signal that otherwise may cause the signal of transmitting and be collected into has very big error, so as to cause detection
As a result it is inaccurate.Therefore, in the prior art, flame ionization ditector cannot be moved arbitrarily, and it is not suitable for very much
For portable portable gas chromatograph.And in the prior art, the external shell portion of flame ionization ditector
It is quite heavy and too fat to move using being integrally formed or being welded and fixed.When inner member occurs that damage, aging, position are inaccurate etc. to ask
During topic, it is difficult to be maintained and repair.
So, there is weight weight in flame ionization ditector, space structure is too fat to move, and external interference resistance is weak etc. asks
Topic, and it is not suitable for portable portable gas chromatograph.
Utility model content
To overcome above mentioned problem, the utility model provides a kind of hydrogen flameionization suitable for portable gas chromatograph
Detector, especially a kind of miniature flame ionization ditector.
The flame ionization ditector, including polarization pole, collector, surge drum, nozzle and igniter；
The flame ionization ditector includes base portion, housing section and the compressed part that order is detachably fastenedly connected, institute
State and air chamber is formed between base portion and housing section, combustion chamber, the air chamber and the combustion are formed between housing section and compressed part
Room is burnt to communicate；Wherein,
The surge drum is provided with the combustion chamber, the collector is connected with the surge drum；
The base portion is provided with hydrogen gas circuit and the nozzle, and the nozzle is connected with the polarization pole, and extends to institute
State above polarization pole, and the hydrogen gas circuit is communicated with the nozzle；
The housing section is provided with air gas circuit, and the air gas circuit is connected with the air chamber；The housing section is set
Polarity installation site, the polarization pole and the collector are fixed in the two poles of the earth installation site；
The compressed part is used to compress the surge drum and the housing section, is provided with the igniter, is used for
Light the hydrogen in the nozzle.
Specifically, the supporting part of the housing section including connecting portion and thereunder, the two is detachably fastenedly connected, described
Air gas circuit is arranged on the supporting part, and the two poles of the earth installation site is arranged on the connecting portion.
Specifically, it is described to be detachably fastenedly connected as threaded connection.
More specifically, described be threaded to fine thread connection.
Further, it is provided with surge drum fixed seat in the combustion chamber, the compressed part is by the surge drum fixed seat
Compressed with the housing section, the surge drum fixed seat is used to fix the surge drum.
Further, the base portion is provided with carrier gas path, and the carrier gas path is communicated with the nozzle.
Further, the base portion is provided with nozzle groove, is engaged with the nozzle, for installing the nozzle.
Further, the flame ionization ditector also includes nozzle fixed seat, is arranged on the nozzle groove
In, for fixing the nozzle.
Specifically, it is provided with sealing gasket between the nozzle fixed seat and the nozzle.
More specifically, the nozzle is ceramic nozzle or quartz nozzle.
The beneficial effects of the utility model：
The flame ionization ditector that the utility model is provided designs that light, space structure is compact, anti-external interference energy
Power is strong.The flame ionization ditector integrated level that the utility model is provided is high, and all parts are closely connected with independence,
All parts are fastened or connected by screw thread, allow the effective impedance external interference of its entirety, and easily tie up
Repair replacing.
Brief description of the drawings
Fig. 1 is the structural representation of flame ionization ditector described in the utility model.
Reference is：
10th, base portion
12nd, hydrogen gas circuit
14th, carrier gas path
20th, housing section
21st, supporting part
212nd, air gas circuit
22nd, connecting portion
40th, compressed part
50th, polarization pole
52nd, collector
70th, nozzle
72nd, nozzle fixed seat
80th, surge drum
82nd, surge drum fixed seat
Embodiment
Below in conjunction with drawings and examples, embodiment of the present utility model is described in more details, with
Just it better understood when the advantage of scheme of the present utility model and its various aspects.However, specific implementations described below side
Formula and embodiment are only the purposes of explanation, rather than to limitation of the present utility model.
As shown in figure 1, flame ionization ditector described in the utility model, including polarization pole 52, collector 54, receipts
Collect cylinder 80, nozzle 70 and igniter, wherein, the flame ionization ditector includes what order was detachably fastenedly connected
Base portion 10, housing section 20 and compressed part 40, form air chamber, housing section 20 and compressed part between the base portion 10 and housing section 20
Combustion chamber is formed between 40, the air chamber is communicated with the combustion chamber.
As shown in figure 1, being provided with the surge drum 80 in the combustion chamber, the collector is connected with the surge drum.
As shown in figure 1, the base portion 10 is provided with hydrogen gas circuit 2 and the nozzle 70, the nozzle 70 and the polarization
Pole 50 is connected, and extends to the top of the polarization pole 50, and the hydrogen gas circuit 12 is communicated with the nozzle 70；Preferably,
The nozzle 70 is ceramic nozzle or quartz nozzle.
As shown in figure 1, the base portion 10 is provided with carrier gas path 14, the carrier gas path 14 is communicated with the nozzle 70.
The carrier gas path 14 is used to be passed through inert gas, and tested gas is loaded into it is passed through the nozzle 70 with hydrogen jointly, it is ensured that
Tested gas passes through flame kernel, completely burning.
As shown in figure 1, the base portion 10 is also provided with nozzle groove, it is engaged with the nozzle 70, for installing
State nozzle 70.In addition, the flame ionization ditector also includes nozzle fixed seat 72, it is arranged in the nozzle groove,
For fixing the nozzle 70.Sealing gasket is provided between the nozzle fixed seat 72 and the nozzle 70, prevents gas from leaking,
Influence measurement result.
As shown in figure 1, nozzle 70 can be fastened under the fixation of nozzle fixed seat 72 and sealing gasket fix nozzle 70,
The junction of the bottom of nozzle 70 and hydrogen gas circuit 12 can also be sealed simultaneously, the installation accuracy of nozzle 70 is finally also ensured.
As shown in figure 1, the housing section 20 is provided with air gas circuit 212, the air gas circuit 212 connects with the air chamber
It is logical.The housing section 20 sets polarity installation site, and the polarization pole 50 and the collector 52 are fixed on the two poles of the earth peace
On holding position.
As shown in figure 1, in order to which more aspect is dismantled, connecting portion can also be included with maintenance, the housing section 20 by being easy to safeguard
22 and supporting part 21 thereunder, the two is detachably fastenedly connected, and fastening point is B, and the air gas circuit 212 is arranged on described
On supporting part 21.The supporting part 21 can have boss, and combustion chamber is significantly distinguished with air chamber.
As illustrated in fig. 1, it is preferred that the air gas circuit 212 is arranged on the supporting part 21, the two poles of the earth installation site
It is arranged on the connecting portion 22.The mode that the polarization pole 50 and the collector 52 can be connected through a screw thread is fixed on described
In the installation site of the two poles of the earth.
As shown in figure 1, the compressed part 40 is used to compress the surge drum 80 and the housing section 20, institute is provided with
Igniter is stated, for lighting the hydrogen in the nozzle 70.Especially, the compressed part 40 is by the surge drum 80, described
Supporting part 21, connecting portion 22 and surge drum fixed seat 82 are compressed, be the flame ionization ditector overall structure more
It is compact.
As shown in figure 1, normally, above-mentioned base portion 10, housing section 20, surge drum 80, nozzle 70 etc. are coaxially arranged, side
Just install, by the axiality for ensuring to install, can also further ensure the accuracy of testing result.
Hydrogen is passed through flame ionization ditector from hydrogen gas circuit 12, it enters in nozzle 70, by air from air
Gas circuit 212 is passed through in flame ionization ditector, air inlet room, and oxygen is provided for the burning of hydrogen.The igniter,
For lighting the hydrogen in the nozzle 70.Object under test is decomposed using combustion of hydrogen, the polarization pole 50 produces electric field, institute
State surge drum 80 be used for collect decompose composition, the collector 52 collection coherent signal, and then determine its composition.
As shown in figure 1, being to be detachably connected between each several part for the flame ionization ditector that the utility model is provided
, fastening point is A, B, C, it is preferable that described to be detachably fastenedly connected as threaded connection.It is highly preferred that described be threaded to
Fine thread is connected.So both it can maintain easily and repair, can also suitably reduce hydrogen flameionization according to actual conditions
The size of detector, so as to reduce floor space.
Further, since the utility model fastening point A, B, C are attached using high-precision fine thread, ensureing to connect
Connection precision is ensure that while connecing fastening, makes compact overall structure light, without unnecessary fastenings, is greatly optimized
Overall structure, or even may be such that its overall full-size is only
Flame ionization ditector described in the utility model, is fixed surge drum 80 and surge drum by compressed part 40
Seat 82 is fixed, and keeps it in same position, and without the movement because of flame ionization ditector, position is offset,
The accuracy of testing result is greatly ensure that, and it is highly suitable for portable portable gas chromatograph.
Therefore, this mode can not only ensure that surge drum 80 fastens jail in the case where not increasing unnecessary fastener
Lean on, anti-vibration is anti-tampering, it can also be ensured that the installation accuracy of surge drum 80, make its internal structure compact firmly.
It should be noted that each embodiment above by reference to described by accompanying drawing is only to illustrate the utility model rather than limit
Scope of the present utility model is made, it will be understood by those within the art that, do not departing from spirit of the present utility model and model
The modification carried out on the premise of enclosing to the utility model or equivalent substitution, all should cover within the scope of the utility model.
In addition, signified outer unless the context, the word occurred in the singular includes plural form, and vice versa.In addition, except non-specifically
Explanation, then all or part of of any embodiment can combine all or part of of any other embodiment to use.
Claims (10)
1. a kind of flame ionization ditector, including polarization pole, collector, surge drum, nozzle and igniter, its feature
It is, the flame ionization ditector includes base portion, housing section and the compressed part that order is detachably fastenedly connected, the base
Air chamber is formed between portion and housing section, combustion chamber, the air chamber and the combustion chamber are formed between housing section and compressed part
Communicate；Wherein,
The surge drum is provided with the combustion chamber, the collector is connected with the surge drum；
The base portion is provided with hydrogen gas circuit and the nozzle, and the nozzle is connected with the polarization pole, and extends to the pole
Change above pole, and the hydrogen gas circuit is communicated with the nozzle；
The housing section is provided with air gas circuit, and the air gas circuit is connected with the air chamber；The housing section is provided with two
Pole installation site, the polarization pole and the collector are fixed in the two poles of the earth installation site；
The compressed part is used to compress the surge drum and the housing section, the igniter is provided with, for lighting
Hydrogen in the nozzle.
2. flame ionization ditector as claimed in claim 1, it is characterised in that the housing section include connecting portion and
Supporting part below, the two is detachably fastenedly connected, and the air gas circuit is arranged on the supporting part, and described the two poles of the earth are installed
Position is arranged on the connecting portion.
3. flame ionization ditector as claimed in claim 1 or 2, it is characterised in that it is described it is detachable be fastenedly connected for
Threaded connection.
4. flame ionization ditector as claimed in claim 3, it is characterised in that described to be threaded to fine thread company
Connect.
5. flame ionization ditector as claimed in claim 1, it is characterised in that be provided with surge drum in the combustion chamber
Fixed seat, the compressed part compresses the surge drum fixed seat and the housing section, and the surge drum fixed seat is used to fix
The surge drum.
6. flame ionization ditector as claimed in claim 1, it is characterised in that the base portion is provided with carrier gas path,
The carrier gas path is communicated with the nozzle.
7. flame ionization ditector as claimed in claim 1, it is characterised in that the base portion is provided with nozzle groove,
It is engaged with the nozzle, for installing the nozzle.
8. flame ionization ditector as claimed in claim 7, it is characterised in that the flame ionization ditector is also
Including nozzle fixed seat, it is arranged in the nozzle groove, for fixing the nozzle.
9. flame ionization ditector as claimed in claim 8, it is characterised in that the nozzle fixed seat and the nozzle
Between be provided with sealing gasket.
10. flame ionization ditector as claimed in claim 1, it is characterised in that the nozzle is ceramic nozzle or stone
English nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621432276.8U CN206450639U (en) | 2016-12-23 | 2016-12-23 | Flame ionization ditector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621432276.8U CN206450639U (en) | 2016-12-23 | 2016-12-23 | Flame ionization ditector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206450639U true CN206450639U (en) | 2017-08-29 |
Family
ID=59674512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621432276.8U Active CN206450639U (en) | 2016-12-23 | 2016-12-23 | Flame ionization ditector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206450639U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088921A (en) * | 2017-12-12 | 2018-05-29 | 优泰科技（深圳）有限公司 | VOC on-line computing models |
| CN110749686A (en) * | 2018-07-24 | 2020-02-04 | 中国科学院大连化学物理研究所 | Nozzle assembly for miniature hydrogen flame ionization detector |
| CN111562336A (en) * | 2020-06-16 | 2020-08-21 | 大连中汇达科学仪器有限公司 | Hydrogen flame ionization detector with hydrogenation effect |
-
2016
- 2016-12-23 CN CN201621432276.8U patent/CN206450639U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088921A (en) * | 2017-12-12 | 2018-05-29 | 优泰科技（深圳）有限公司 | VOC on-line computing models |
| CN110749686A (en) * | 2018-07-24 | 2020-02-04 | 中国科学院大连化学物理研究所 | Nozzle assembly for miniature hydrogen flame ionization detector |
| CN110749686B (en) * | 2018-07-24 | 2021-08-10 | 中国科学院大连化学物理研究所 | Nozzle assembly for miniature hydrogen flame ionization detector |
| CN111562336A (en) * | 2020-06-16 | 2020-08-21 | 大连中汇达科学仪器有限公司 | Hydrogen flame ionization detector with hydrogenation effect |
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