CN209237644U - A kind of gas purification pipe and tail gas absorption processing unit for ion mobility spectrometry - Google Patents
A kind of gas purification pipe and tail gas absorption processing unit for ion mobility spectrometry Download PDFInfo
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- CN209237644U CN209237644U CN201821893091.6U CN201821893091U CN209237644U CN 209237644 U CN209237644 U CN 209237644U CN 201821893091 U CN201821893091 U CN 201821893091U CN 209237644 U CN209237644 U CN 209237644U
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Abstract
The utility model discloses a kind of gas purification pipe and tail gas absorption processing unit for ion mobility spectrometry, gas purification pipe is cylindric hollow metal pipe；Solid metal stick is fixed with along the direction of axis in the hollow metal pipe；There is annular groove on the metal bar surface；The annular groove is wound with gas transport pipeline；The gas delivery tube road surfaces have through-hole；Organic matter adsorbent is filled in the hollow metal pipe；It is formed outside tail gas absorption processing unit by upper and lower double-layer structure is closed, superstructure includes gas purification pipe, and understructure includes cubic chamber and the pumping pump assembly for gas to be discharged to processing unit.This tail gas absorption processing unit can do purified treatment for ionic migration spectrometer make-up gas source, and whole device seals under more ionic migration spectrometers simultaneously use condition and will not generate gas outlet resistance to ionic migration spectrometer.
Description
Technical field
The utility model belongs to Ion mobility spectrometry field, and in particular to a kind of gas for ion mobility spectrometry is net
Change pipe and tail gas absorption processing unit.
Background technique
Ion mobility spectrometry (Ion Mobility Spectrometry, IMS) technology is one occurred the 1970s
Kind separation detection technique, compared with traditional mass spectrum, chromatographic apparatus, it has structure simple, high sensitivity, and analysis speed is fast,
As a result reliable feature can detect micro substance in atmospheric environment, be suitable for scene and use.Its operating condition is
Analysis detection is carried out under normal pressure.
Ionization source is the critical component in ionic migration spectrometer, and the ionization and separation to sample molecule all play important
Effect.Common ionization source has radioactive ionization gauge source, light ionization source, corona discharge ionization source, electrospray ionisation source etc..In recent years,
The application method latest developments of migration spectrum are to add chemical dopant in use, it can optimize the performance of instrument, again
Some substances that cannot be detected can be made to be ionized in the detector of ion mobility spectrometry, separate analysis.Common chemical doping
Agent has acetone, butanone, methyl phenyl ethers anisole, niacinamide etc..Chemical dopant in use often addition migration spectrum carrier gas and
It floats in gas, is finally flowed out from the offgas duct of migration spectrum.If tail gas is directly discharged into air, it is bound to cause centainly air
Pollution.
The common Thermal desorption sample injector of ion mobility spectrometry, often solid, fluid sample are dissolved in organic solvent carry out into
Sample analysis.Organic solvent is mixed into carrier gas after Thermal desorption and enters transference tube, finally flows out from the offgas duct of migration spectrum.
Certain pollution can equally be caused to air by being directly discharged into air.
Since 1974, sulfur dioxide, an oxygen were defined in " the industrial "three wastes" discharge tentative standard " that China carries out
Change the discharge standard of 13 kinds of harmful substances such as carbon, hydrogen sulfide.Atmosphere pollutants emission standards are the discharges in order to control pollutant
Amount, makes air quality reach environmental quality standards, to the limitation mark of the amount of pollutants or concentration defined that are discharged into atmosphere
It is quasi-.It examines and promulgates through relevant department, it is legally binding.The whole society on the row of atmosphere pollution to paying much attention to.
Utility model content
Based on background above technology, on the one hand the utility model provides a kind of gas purification pipe, the purification pipe is cylinder
The hollow metal pipe of shape；Solid metal stick is fixed with along the direction of axis in the hollow metal pipe；The metal bar surface has
Annular groove；The annular groove is wound with gas transport pipeline；The gas delivery tube road surfaces have through-hole；It is described hollow
Organic matter adsorbent is filled in metal tube；Gas sufficiently connects by the gas delivery tube of spiral winding with organic matter adsorbent
Touching, carries out absorption processing.
Based on above technical scheme, it is preferred that the ratio of the outer diameter of the metal bar and metal bore is 1:2~1:
4。
Based on above technical scheme, it is preferred that the through-hole rate of the tail gas transmission pipe surface is 40%-60%.
The utility model another further aspect provides a kind of tail gas absorption processing unit for ion mobility spectrometry, the tail gas
Absorption treating device includes above-mentioned gas purification pipe；The tail gas absorption processing unit is by cavity I setting up and down and cavity
II sealing composition；The bottom end of the cavity 1 is open；The open top end of the cavity II；The cavity I and cavity II pass through " O "
Circle sealing；The gas purification pipe is fixed in cavity I；It is provided with cubic chamber in the cavity II and is used for gas
The pumping pump assembly of processing unit is discharged；The upper surface of the cubic chamber is provided with through-hole；It is filled out in the cubic chamber room
Filled with organic matter adsorbent；Ion mobility spectrometry offgas outlet pipe is connected to gas purification pipe through connecting line, gas purification pipe and
Cubic chamber is connected to through connecting line.
Tail gas absorption processing unit internal gettering body purification pipe, cubic chamber and be evacuated pump assembly remaining space be
The buffer storage chamber of gas after purification；The tail gas of the ion mobility spectrometry offgas outlet pipe sequentially enters gas through connecting line
Body purification pipe and cubic chamber, the tail gas into cubic chamber carry out two through the organic matter adsorbent in cubic chamber room
It is overflowed after secondary absorption processing by cubic chamber upper surface through-hole, into buffer storage chamber, then by pumping pump assembly
Gas is discharged after purifying.
Based on above technical scheme, it is preferred that the section of the cavity wall of II connecting place of the cavity I and cavity is slope shape
Section, and slope inwardly；The cavity wall of the connecting place is equipped with annular groove, for fixed described " O " circle.
Based on above technical scheme, it is preferred that the gas purification pipe is fixed on described by bracket and damping silicagel pad
On the top plate of cavity I.
Based on above technical scheme, it is preferred that the organic matter adsorbent includes active carbon and molecular sieve；The activity
The ratio of charcoal and molecular sieve is 1:1~4:1.
Based on above technical scheme, it is preferred that the through-hole rate of described cube of cavity upper surface is 20%-50%.
Based on above technical scheme, it is preferred that the pumping flow velocity of the aspiration pump in the pumping pump assembly is 5-10L/
min。
Based on above technical scheme, it is preferred that the through-hole that I side of cavity is provided with goes out for ion mobility spectrometry tail gas
The tail gas of mouth pipe enters；The number of openings can change according to migration spectrum instrument number of units, and the through-hole not enabled is close by plug
Envelope.The variation of ion mobility spectrometry quantity is adapted to except through in I side of cavity opening up the through-hole of different number, it can be with
By adjusting or replacement aspiration pump, change pumping flow rate pump.
The tail gas tip tube of ion mobility spectrometry connects the tail gas absorption processing unit in the utility model, air tight and can
To guarantee tail gas circulation non-resistance.
Beneficial effect
(1) tail gas of ion mobility spectrometry is by purified treatment twice, and wherein gas purification pipe inside spin winds gas transport
Pipeline comes into full contact with solvent in tail gas with cleanser, improves treatment effect.
(2) sealing of tail gas absorption processing unit, the pressure resistance in the utility model, while aspiration pump can be rapidly by purification
Make-up gas discharger afterwards avoids terminal from generating pressure, influences the detection and analysis of ion mobility spectrometry.
(3) tail gas absorption processing unit structure in the utility model is simple, easy to use, difficulty of processing is easily achieved,
It can be in any live application on site.
Detailed description of the invention
It is described in further detail with reference to the accompanying drawing.
Fig. 1 is tail gas absorption processing unit surface structure and interior layout subregion schematic diagram；
Fig. 2 is tail gas absorption processing unit exhaust gas flow direction schematic diagram；
Wherein: 1 is cavity I, and 2 be the cubic chamber area in cavity II, and 3 are evacuated pump assembly area for cavity II, and 4 are
Two logical quick coupling I-1,5 be four turn of one quick coupling II, and 6 be gas purification pipe, and 7 be cubic chamber, and 8 be pumping pump group
Part, 9 is fix two logical quick coupling I-5, and 10 be quick coupling III-1, and 11 be quick coupling III-2, and 12 be quick coupling
III-3,13 be quick coupling III-4, and 14 be quick coupling III-5.
Specific embodiment
A kind of tail gas absorption processing unit for ion mobility spectrometry, device is by upper layer cavity I and II group of lower layer's cavity
At upper layer cavity I is fixed with gas purification pipe, and lower layer's cavity II is fixed with cubic chamber and pumping pump assembly, the tail gas
The cavity wall of the connecting place of upper and lower two layers of cavity of absorption treating device is to intracavitary inclination, and the cavity wall of connecting place is equipped with ring
Connected in star is fixed with " O " circle in groove, seals for cavity I and cavity II.
Cavity I side in tail gas absorption processing unit upper layer is provided with 4 through-holes, fixes two logical quick coupling I-1, I- respectively
2, I-3 and I-4, the offgas outlet pipe of 4 ionic migration spectrometers respectively with two logical quick coupling I-1, I-2, I-3 and I-4 one
End connection；The other end of two logical quick coupling I-1, I-2, I-3 and I-4 is connect with one end of four turn of one quick coupling II respectively,
The other end of four turn of one quick coupling II is connect with the entrance pipe end of gas purification pipe；Two logical quick coupling I-1 and four
Turn a quick coupling II, quick coupling II passes through polyfluortetraethylene pipe with gas purification tube inlet pipe end and connect；Gas purification
Pipe is cylinder-shaped, hollow, closed metal pipe structure, is fastened transversely in tail gas absorption processing unit upper layer cavity I, described
Two, outside of cylinder closed structure or so end face is respectively fixed with the quick coupling III-1 and III-2 that one end is threaded hole；
It is the entrance pipe end of gas purification pipe, the right end that the fixed one end in the left side, which is the quick coupling III-1 of threaded hole,
It is the outlet pipe end of gas purification pipe that the fixed one end in face, which is the quick coupling III-2 of threaded hole,；The metal tube inner space
Having one section of diameter along the direction of axis is the solid metal stick of 1cm；There are annular groove, gas in solid metal stick surface
Transfer conduit is helically wound around in annular groove；The gas delivery tube of the spiral winding is polyfluortetraethylene pipe, gas transport
Pipe surface has through-hole；Organic matter adsorbent is filled with inside the metal tube.Metal tube inner chamber body both ends are respectively fixed with quickly
Connector III-4 and quick coupling III-5；By logical between quick coupling III-4 and quick coupling III-1 in the metal tube
Hole connection；Quick coupling III-5 is connect with quick coupling III-2 in the metal tube.
Cubic chamber is fixed in cavity II；The upper surface of cubic chamber is provided with through-hole；The cubic chamber
Interior to be filled with organic matter adsorbent, cubic chamber is fixed with quick coupling III-3 with threaded hole close to cavity bottom；Fastly
Quick coupling III-2 is connect by polyfluortetraethylene pipe with quick coupling III-3.
According to exhaust gas circulating direction, ion mobility spectrometry offgas outlet pipe end is fixed two logical quick coupling I-1
(4), four turn of one quick coupling II (5), quick coupling III-1 (10), quick coupling III-4 (13), gas purification are sequentially connected
It manages (6), quick coupling III-5 (14), quick coupling III-2 (11), quick coupling III-3 (12), cubic chamber (7), take out
Air pump assembly (8) fixes two logical quick coupling I-5 (9).Gas after final purification is discharged into air by quick coupling I-5 (9)
In.
Embodiment 1
Voltage-withstand test, the fast quick access of tail gas outlet port connection are done to the tail gas absorption processing unit in the utility model
Head I-5 (9) is connect with polyfluortetraethylene pipe one end, and the polyfluortetraethylene pipe other end connects pressure gauge, makes to enter chamber indoor gas
Force pressure table regulates and controls in 0.5MPa；Tail gas absorption processing unit can pressure resistance, normal use it is air tight.
Embodiment 2
Sealing test is done to the tail gas absorption processing unit in the utility model, 4 ionic migration spectrometer tail gas connections make
Into tail gas absorption processing unit, the quick coupling I-5 (9) of tail gas outlet port connection is connect with polyfluortetraethylene pipe, is passed through
Quality of connection flowmeter controls gas and exports 2L/min, and tail gas absorption processing unit is air tight under such state, and can guarantee
It is worked normally under 4 ion mobility spectrometry analyzer air circuit connection system condition of normal pressure.
Sealing adaptor component in the utility model is not limited to the above embodiments, and those skilled in the art are practical according to this
Novel announcement, the improvement made for the utility model and modification are all within the protection scope of the utility model patent.
Claims (10)
1. a kind of gas purification pipe for ion mobility spectrometry, it is characterised in that: the purification pipe is cylindric hollow metal
Pipe；Solid metal stick is fixed with along the direction of axis in the hollow metal pipe；There is annular groove on the metal bar surface；It is described
Annular groove is wound with gas transport pipeline；The gas delivery tube road surfaces have through-hole；It is filled in the hollow metal pipe
Organic matter adsorbent.
2. purification pipe according to claim 1, which is characterized in that the outer diameter of the metal bar and the ratio of metal bore
For 1:2~1:4.
3. purification pipe according to claim 1, which is characterized in that the through-hole rate of the gas transport pipe surface is 40%-
60%.
4. a kind of tail gas absorption processing unit for ion mobility spectrometry, it is characterised in that: the tail gas absorption processing unit packet
Include gas purification pipe described in claim 1；The tail gas absorption processing unit is sealed by cavity I and cavity II setting up and down
Composition；The bottom end of the cavity I is open；The open top end of the cavity II；The cavity I and cavity II pass through the sealing of " O " circle
Assembling；The gas purification pipe is fixed in cavity I；Cubic chamber is provided in the cavity II and for gas to be discharged
The pumping pump assembly of processing unit；The upper surface of the cubic chamber is provided with through-hole；It is filled in the cubic chamber room
Organic matter adsorbent；Ion mobility spectrometry offgas outlet pipe is connected to by the road with gas purification pipe, gas purification pipe and cubic chamber
Room is connected to by the road.
5. the tail gas absorption processing unit according to claim 4 for ion mobility spectrometry, it is characterised in that: the cavity
I and the section of cavity wall of II connecting place of cavity be ramp-shaped cross-section, and to intracavitary inclination；The cavity wall of the connecting place is equipped with ring
Connected in star, " O " circle described in fixed.
6. the tail gas absorption processing unit according to claim 4 for ion mobility spectrometry, it is characterised in that: the gas
Purification pipe is fixed on the top plate of the cavity I by bracket and damping silicagel pad.
7. the tail gas absorption processing unit according to claim 4 for ion mobility spectrometry, it is characterised in that: described organic
Object adsorbent includes active carbon and molecular sieve；The ratio of the active carbon and molecular sieve is 1:1~4:1.
8. the tail gas absorption processing unit according to claim 4 for ion mobility spectrometry, it is characterised in that: described cube
The through-hole rate of fluid chamber upper surface is 20%-50%.
9. the tail gas absorption processing unit according to claim 4 for ion mobility spectrometry, it is characterised in that: the pumping
Flow rate pump is 5-10L/min.
10. the tail gas absorption processing unit according to claim 4 for ion mobility spectrometry, it is characterised in that: the chamber
The through-hole that I side of body is provided with, the tail gas for ion mobility spectrometry offgas outlet pipe enter；The number of openings can be according to migration spectrum
The variation of instrument number of units, the through-hole not enabled are sealed by plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821893091.6U CN209237644U (en) | 2018-11-16 | 2018-11-16 | A kind of gas purification pipe and tail gas absorption processing unit for ion mobility spectrometry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821893091.6U CN209237644U (en) | 2018-11-16 | 2018-11-16 | A kind of gas purification pipe and tail gas absorption processing unit for ion mobility spectrometry |
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| Publication Number | Publication Date |
|---|---|
| CN209237644U true CN209237644U (en) | 2019-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821893091.6U Active CN209237644U (en) | 2018-11-16 | 2018-11-16 | A kind of gas purification pipe and tail gas absorption processing unit for ion mobility spectrometry |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113020140A (en) * | 2019-12-09 | 2021-06-25 | 中国科学院大连化学物理研究所 | In-situ cleaning method for ion transfer tube |
-
2018
- 2018-11-16 CN CN201821893091.6U patent/CN209237644U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113020140A (en) * | 2019-12-09 | 2021-06-25 | 中国科学院大连化学物理研究所 | In-situ cleaning method for ion transfer tube |
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