CN208297430U - A kind of secondary parsing thermal desorption device of binary channels - Google Patents
A kind of secondary parsing thermal desorption device of binary channels Download PDFInfo
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- CN208297430U CN208297430U CN201820757549.9U CN201820757549U CN208297430U CN 208297430 U CN208297430 U CN 208297430U CN 201820757549 U CN201820757549 U CN 201820757549U CN 208297430 U CN208297430 U CN 208297430U
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- 238000003795 desorption Methods 0.000 title claims abstract description 65
- 238000002347 injection Methods 0.000 claims abstract description 11
- 239000007924 injection Substances 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000001467 acupuncture Methods 0.000 claims description 6
- 238000010926 purge Methods 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 8
- 239000007789 gas Substances 0.000 description 22
- 239000005416 organic matter Substances 0.000 description 6
- 238000004817 gas chromatography Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
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Abstract
The utility model relates to detection technique fields, especially a kind of secondary parsing thermal desorption device of binary channels, No. 3 air inlets of the first six-way valve and the second six-way valve are communicated with GC injection port by tracheae, No. 1 air inlet of the first six-way valve is communicated with the secondary collecting trap of the first low temperature by tracheae, and first the secondary collecting trap of low temperature be also connected on No. 4 air inlets of the first six-way valve, No. 1 air inlet of the second six-way valve is communicated with the secondary collecting trap of the second low temperature by tracheae, and second the secondary collecting trap of low temperature be also connected on No. 4 air inlets of the first six-way valve, No. 5 air inlets of the first six-way valve are communicated with the first desorption tube by tracheae, No. 5 air inlets of the second six-way valve are communicated with the second desorption tube by tracheae, and first desorption tube and the second desorption tube side tracheae on be provided with pressure control module, first solenoid valve And gas flowmeter.The utility model realizes the secondary thermal desorption of full-automatic binary channels.
Description
Technical field
The utility model relates to detection technique field more particularly to a kind of secondary parsing thermal desorption devices of binary channels.
Background technique
Gas-chromatography or gas chromatography-mass spectrography (GC, GC-MS) are most widely used at present for volatility
With a kind of detection means of semi-volatile compounds.But some Trace Organic Compounds are due to complicated component in atmosphere, and content is too
It is low, conventional gas chromatography detection can not be used.Secondary parsing thermal desorption device currently produced on the market, is all single-pass
Road, this is the sample feeding equipment of gas chromatograph or gas chromatograph-mass spectrometer combined instrument, for detecting TVOC in environment
(total volatile organism), VOCs (the poisonous and harmful monitoring organic matter of volatility), according to examination criteria analyze sample when
Between it is long, about 1 hour or so.Limit detection efficiency.For this purpose, we have proposed a kind of secondary parsing thermal desorption dresses of binary channels
It sets.
Utility model content
Purpose of the utility model is to solve disadvantages existing in the prior art, and a kind of binary channels proposed is secondary
Parse thermal desorption device.
To achieve the goals above, the utility model adopts the technical scheme that
Design a kind of secondary parsing thermal desorption device of binary channels, including central controller, the first six-way valve and the two or six
Port valve, and No. 2 air inlets of the first six-way valve and the second six-way valve are communicated with air inlet by tracheae, the first six-way valve and
No. 3 air inlets of the second six-way valve are communicated with GC injection port by tracheae, and GC injection port is connected to by tracheae in gas-chromatography
On instrument or gas chromatograph-mass spectrometer combined instrument, No. 1 air inlet of first six-way valve is communicated with the first low temperature two by tracheae
Secondary collecting trap, and the secondary collecting trap of the first low temperature is also connected on No. 4 air inlets of the first six-way valve, second six-way valve
No. 1 air inlet is communicated with the secondary collecting trap of the second low temperature by tracheae, and the secondary collecting trap of the second low temperature is also connected to the two or six
On No. 4 air inlets of port valve, No. 5 air inlets of first six-way valve are communicated with the first desorption tube by tracheae, and described second
No. 5 air inlets of six-way valve are communicated with the second desorption tube, and the gas of the first desorption tube and the second desorption tube side by tracheae
Pressure control module, the first solenoid valve and gas flowmeter are provided on pipe, first six-way valve and the two or six lead to
No. 6 air inlets of valve are communicated with emptying outlet by tracheae, and second solenoid valve is additionally provided on the tracheae, second electromagnetism
It is also connected in the first desorption tube and the second desorption tube by tracheae on tracheae between valve and emptying outlet, and on the tracheae
It is additionally provided with third solenoid valve, is also connected on the tracheae between the second solenoid valve and the first six-way valve and the second six-way valve
It is connected with the 4th solenoid valve, and the 4th solenoid valve other end is connected to the pressure control module in the second desorption tube by tracheae
And gas flowmeter is electrically connected at central controller, and central controller be electrically connected with power supply module, display module,
Storage module, temperature control modules and mechanical action module, and temperature control modules are arranged in the secondary collecting trap of the first low temperature
And second in the secondary collecting trap of low temperature, the mechanical action module is electrically connected at the first six-way valve and the second six-way valve.
Preferably, first desorption tube and the second desorption tube are made of automatic 24 sample discs and control system, from
Dynamic 24 sample discs can test automatically from No. 1 position to 24 sample positions, and heat block is in the case where heating motor control when purging
The first desorption tube and the heating of the second desorption tube are against, OC-LOCK seal cap expert is penetrated by acupuncture treatment motor under test mode
At gas circuit access, test completion acupuncture treatment motor, which exits, returns to beginning position.
Preferably, first six-way valve and the second six-way valve are specially air way switch valve, and by sample introduction motor into
Row switching.
Preferably, in the secondary collecting trap of first low temperature and the secondary collecting trap of the second low temperature in secondary catch is installed
Collector.
The utility model proposes a kind of secondary parsing thermal desorption device of binary channels, beneficial effect is: the binary channels two
Secondary parsing thermal desorption device enables to detection efficiency to double, the cost of investment for increasing less than 1/4, gas chromatograph or
Gas chromatograph-mass spectrometer combined instrument only increases an injection port and detector, and host and operation control system are increased without, real
Room land occupation and other configuration equipment are tested without in increase, effectively saves equipment cost and artificial use cost, and improve
Efficiency realizes the secondary thermal desorption of full-automatic binary channels.
Detailed description of the invention
Fig. 1 be the utility model proposes a kind of binary channels it is secondary parsing thermal desorption device structural schematic diagram.
Fig. 2 be the utility model proposes a kind of binary channels it is secondary parsing thermal desorption device system block diagram.
In figure: 1 first six-way valve, 2 second six-way valves, 3 GC injection ports, the secondary collecting trap of 4 first low temperature, 5 second low temperature
Secondary collecting trap, 6 first desorption tubes, 7 second desorption tubes, 8 pressure control modules, 9 first solenoid valves, 10 gas flowmeters, 11
4th solenoid valve, 12 third solenoid valves, 13 second solenoid valves, 14 emptying outlets, 15 air inlets.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.
Referring to Fig.1-2, the secondary parsing thermal desorption device of a kind of binary channels, including central controller, the first six-way valve 1 and
Second six-way valve 2, and No. 2 air inlets of the first six-way valve 1 and the second six-way valve 2 are communicated with air inlet 15 by tracheae, the
No. 3 air inlets of one six-way valve 1 and the second six-way valve 2 are communicated with GC injection port 3 by tracheae, and GC injection port 3 passes through gas
Pipe is connected on gas chromatograph or gas chromatograph-mass spectrometer combined instrument, and No. 1 air inlet of the first six-way valve 1 is connected by tracheae
It is connected with the secondary collecting trap 4 of the first low temperature, and the secondary collecting trap 4 of the first low temperature is also connected to No. 4 air inlets in the first six-way valve 1
On, No. 1 air inlet of the second six-way valve 2 is communicated with the secondary collecting trap 5 of the second low temperature, and the secondary trapping of the second low temperature by tracheae
Trap 5 is also connected on No. 4 air inlets of the second six-way valve 2, and No. 5 air inlets of the first six-way valve 1 are communicated with first by tracheae
No. 5 air inlets of desorption tube 6, the second six-way valve 2 are communicated with the second desorption tube 7, and the first desorption tube 6 and second by tracheae
It is logical that pressure control module 8, the first solenoid valve 9 and gas flowmeter the 10, the 1st are provided on the tracheae of 7 side of desorption tube
No. 6 air inlets of valve 1 and the second six-way valve 2 are communicated with emptying outlet 14 by tracheae, and are additionally provided with second on the tracheae
Solenoid valve 13, second solenoid valve 13 and emptying outlet 14 between tracheae on also by tracheae be connected to the first desorption tube 6 and
In second desorption tube 7, and third solenoid valve 12 is additionally provided on the tracheae, second solenoid valve 13 and the first six-way valve 1 and
The 4th solenoid valve 11 is also communicated on tracheae between two six-way valves 2, and 11 other end of the 4th solenoid valve is connected to by tracheae
In the second desorption tube 7, pressure control module 8 and gas flowmeter 10 are electrically connected at central controller, and center control
Device processed is electrically connected with power supply module, display module, storage module, temperature control modules and mechanical action module, and temperature
Control module is arranged in the secondary collecting trap 4 of the first low temperature and the secondary collecting trap 5 of the second low temperature, and mechanical action module electrically connects
It is connected to the first six-way valve 1 and the second six-way valve 2.
First desorption tube 6 and the second desorption tube 7 are made of automatic 24 sample discs and control system, automatic 24 samples
Disk can be tested automatically from No. 1 position to 24 sample positions, and heat block againsts the first solution in the case where heating motor control when purging
Suction pipe 6 and the heating of the second desorption tube 7, penetrate OC-LOCK seal cap expert by acupuncture treatment motor under test mode and lead at gas circuit
Road, test completion acupuncture treatment motor, which exits, returns to beginning position, and the first desorption tube 6 and the second desorption tube 7 are incited somebody to action according to examination criteria
For the air of certain volume by being enriched with equipped with particular fillers sampling pipe, sampling pipe is loaded in the secondary thermal desorption of binary channels point
Analysis.
First six-way valve 1 and the second six-way valve 2 are specially air way switch valve, and are switched over by sample introduction motor.
It is interior in the secondary collecting trap 4 of first low temperature and the secondary collecting trap 5 of the second low temperature that secondary trap tube is installed, it purges
When, it heats the first desorption tube 6 and the second desorption tube 7, the detection organic matter that will volatilize out by carrier gas nitrogen brings low temperature two into
The trapping of secondary trap tube, when sweat are the heating that is rapidly heated, will the secondary trap tube of low temperature trap in the volatile organic compounds that trap.
When work, the first desorption tube 6 and the second desorption tube 7 according to the flow of program setting, pressure, at a temperature of,
Determine at temperature the organic matter adsorbed in sample cell, by high-temperature heating, volatile organic matter from the first desorption tube 6 and the
It is parsed in two desorption tubes, 7 filler, becomes gas, the volatile organic matter gas parsed is blown by high purity inert gas
Sweep to secondary enrichment in the secondary collecting trap 4 of -40 the first low temperature of degree and the secondary collecting trap 5 of the second low temperature, -40 the first low temperature two of degree
By the system of being rapidly heated, heat up fast 240 degrees seconds, and quickly low temperature is caught for secondary collecting trap 4 and the secondary collecting trap 5 of the second low temperature
Collector is raised to about 300 degree from -40 degree, so that volatile organic matter is flashed as gaseous state again, passes through the first six-way valve 1 and the
Two six-way valves 2 are quickly switched into GC injection port 3, carry the secondary collecting trap 4 of the first low temperature and the second low temperature two by GC injection port 3
Treated that gas enters detection gas chromatograph or gas chromatograph-mass spectrometer combined instrument for secondary trap tube in secondary collecting trap 5
Middle analysis content and composition.
More than, the only preferable specific embodiment of the utility model, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, according to the utility model
Technical solution and its utility model design be subject to equivalent substitution or change, should all cover the protection scope of the utility model it
It is interior.
Claims (4)
1. a kind of secondary parsing thermal desorption device of binary channels, which is characterized in that including central controller, the first six-way valve (1) with
And second six-way valve (2), and No. 2 air inlets of the first six-way valve (1) and the second six-way valve (2) are communicated with air inlet by tracheae
No. 3 air inlets of mouth (15), the first six-way valve (1) and the second six-way valve (2) are communicated with GC injection port (3) by tracheae, and
GC injection port (3) is connected to first six-way valve on gas chromatograph or gas chromatograph-mass spectrometer combined instrument by tracheae
(1) No. 1 air inlet is communicated with the secondary collecting trap of the first low temperature (4) by tracheae, and the secondary collecting trap of the first low temperature (4) also connects
Lead on No. 4 air inlets of the first six-way valve (1), No. 1 air inlet of second six-way valve (2) is communicated with second by tracheae
The secondary collecting trap of low temperature (5), and the secondary collecting trap of the second low temperature (5) is also connected on No. 4 air inlets of the second six-way valve (2),
No. 5 air inlets of first six-way valve (1) are communicated with the first desorption tube (6) by tracheae, and the 5 of second six-way valve (2)
Number air inlet is communicated with the second desorption tube (7) by tracheae, and the gas of the first desorption tube (6) and the second desorption tube (7) side
Pressure control module (8), the first solenoid valve (9) and gas flowmeter (10), first six-way valve (1) are provided on pipe
And second No. 6 air inlets of six-way valve (2) emptying outlet (14) is communicated with by tracheae, and be additionally provided with second on the tracheae
Solenoid valve (13), the second solenoid valve (13) and emptying export and are also connected to the first solution by tracheae on the tracheae between (14)
On suction pipe (6) and the second desorption tube (7), and third solenoid valve (12), the second solenoid valve are additionally provided on the tracheae
(13) the 4th solenoid valve (11), and are also communicated on the tracheae between the first six-way valve (1) and the second six-way valve (2)
Four solenoid valves (11) other end is connected to the pressure control module (8) and gas stream on the second desorption tube (7) by tracheae
Meter (10) is electrically connected at central controller, and central controller is electrically connected with power supply module, display module, storage mould
Block, temperature control modules and mechanical action module, and temperature control modules setting in the secondary collecting trap of the first low temperature (4) and
In the secondary collecting trap of second low temperature (5), the mechanical action module is electrically connected at the first six-way valve (1) and the second six-way valve
(2).
2. the secondary parsing thermal desorption device of a kind of binary channels according to claim 1, which is characterized in that first desorption
Pipe (6) and the second desorption tube (7) are made of automatic 24 sample discs and control system, and automatic 24 sample discs can be from No. 1
Position is tested automatically to 24 sample positions, when purging heat block against in the case where heating motor control the first desorption tube (6) and
Second desorption tube (7) heating penetrates OC-LOCK seal cap expert into gas circuit access, test by acupuncture treatment motor under test mode
Completion acupuncture treatment motor, which exits, returns to beginning position.
3. the secondary parsing thermal desorption device of a kind of binary channels according to claim 1, which is characterized in that the described 1st is logical
Valve (1) and the second six-way valve (2) are specially air way switch valve, and are switched over by sample introduction motor.
4. the secondary parsing thermal desorption device of a kind of binary channels according to claim 1, which is characterized in that first low temperature
It is interior in secondary collecting trap (4) and the secondary collecting trap of the second low temperature (5) that secondary trap tube is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820757549.9U CN208297430U (en) | 2018-05-21 | 2018-05-21 | A kind of secondary parsing thermal desorption device of binary channels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820757549.9U CN208297430U (en) | 2018-05-21 | 2018-05-21 | A kind of secondary parsing thermal desorption device of binary channels |
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| CN208297430U true CN208297430U (en) | 2018-12-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110333127A (en) * | 2019-06-24 | 2019-10-15 | 北京大学 | A gas-phase semi-volatile organic compound online measurement system, method and application |
| CN111044649A (en) * | 2020-03-18 | 2020-04-21 | 山东海慧环境科技有限公司 | Gas analysis device |
-
2018
- 2018-05-21 CN CN201820757549.9U patent/CN208297430U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110333127A (en) * | 2019-06-24 | 2019-10-15 | 北京大学 | A gas-phase semi-volatile organic compound online measurement system, method and application |
| US11467135B2 (en) | 2019-06-24 | 2022-10-11 | Peking University | Online measuring system, method and application for semi-volatile organic compound in gas phase |
| CN111044649A (en) * | 2020-03-18 | 2020-04-21 | 山东海慧环境科技有限公司 | Gas analysis device |
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