CN208109558U - Volatile organic matter enriching apparatus - Google Patents
Volatile organic matter enriching apparatus Download PDFInfo
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- CN208109558U CN208109558U CN201820351866.0U CN201820351866U CN208109558U CN 208109558 U CN208109558 U CN 208109558U CN 201820351866 U CN201820351866 U CN 201820351866U CN 208109558 U CN208109558 U CN 208109558U
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- organic matter
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- volatile organic
- enriching apparatus
- temperature control
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The utility model relates to a kind of volatile organic matter enriching apparatus, volatile organic matter enriching apparatus include enrichment gas circuit and, sampling pump and temperature control equipment, the one end for being enriched with gas circuit is purge gass input terminal, the other end is enriched substance output end, be enriched with gas circuit from purge gass input terminal to enriched substance output end include the first triple valve being sequentially communicated by gas-guide tube, first on-off valve, adsorbent equipment, second on-off valve and the second triple valve, adsorption stuffing is provided in adsorbent equipment, the bleeding point of sampling pump is connected to the gas outlet of the second triple valve, temperature control equipment is connect with adsorbent equipment.Volatile organic matter enriching apparatus provided by the utility model, absorption and thermal desorption are carried out to the volatile organic matter in environmental gas by adsorbent equipment, volatile organic matter after enrichment is brought into detecting instrument by purge gass, it can be improved the detection sensitivity of detecting instrument, it reduces detection limit by 2 orders of magnitude, guarantees the high time resolution of instrument.
Description
Technical field
The utility model relates to gas detection equipment fields, more particularly to a kind of volatile organic matter enriching apparatus.
Background technique
Volatile organic matter (Volatile Organic Compounds, VOCs) in environment is due to that can make predecessor ginseng
It pollutes and receives significant attention with atmospheric photochemistry.Currently, the method for detection VOCs mainly has chromatographic detection and Mass Spectrometer Method
Method etc..
Chromatographic detection refers to the method using chromatography as analysis means, conventional testing process include sample acquisition,
Sample pre-treatments and chromatographic isolation detection.Wherein, sample acquisition is involved in the problems, such as that sample is kept, and sample pre-treatments easily cause to wave
The loss of hair property organic matter, thus it is very big on measurement result influence, and analysis time is long, and it is complicated for operation.Mass spectroscopic assays
There are selection ion flow pipe mass spectrography, Proton transfer reaction mass spectrometry method, ion molecule reaction mass spectrography etc., these methods are not necessarily to color
Separation process is composed, but distinguishes detection using ion of the mass analyzer in mass spectrum to different mass-to-charge ratioes, to reach
The purpose detected respectively.
VOCs content in environmental background ingredient is down to ppt even ppq magnitude, the VOCs component of these traces, for complete
Further investigation ATMOSPHERICAL BACKGROUND in face mutually converts and has great importance.However above-mentioned chromatographic technique and mass-spectrometric technique, to volatilization
Property organic matter detection limit generally in ppm and ppb magnitude, sensitivity is lower, and trace VOCs can not be examined effectively
It surveys, the missing for causing component to detect influences the analysis of data and further applies.
Utility model content
Based on this, it is necessary to a kind of volatile organic matter enriching apparatus is provided, to solve existing chromatography, mass spectrometric apparatus spirit
Sensitivity is lower, the problem of cannot effectively detecting for trace VOCs.
A kind of volatile organic matter enriching apparatus, including enrichment gas circuit, sampling pump and temperature control equipment, the enriched gas
The one end on road be purge gass input terminal, the other end be enriched substance output end, the enrichment gas circuit from the purge gass input terminal to
The enriched substance output end includes the first triple valve being sequentially communicated by gas-guide tube, the first on-off valve, adsorbent equipment, second logical
Break valve and the second triple valve, is provided with adsorption stuffing in the adsorbent equipment, the adsorption stuffing can be to volatile organic matter
Absorption and thermal desorption are carried out, the sampling pump is equipped with bleeding point, and the bleeding point is connected to the gas outlet of second triple valve,
The temperature control equipment is connect with the adsorbent equipment, and the temperature control equipment is used to carry out temperature to the adsorbent equipment
Control.
The enrichment gas circuit further includes input quantity monitor in one of the embodiments, and the input quantity monitor is used
Be monitored in the input quantity to gas, input quantity monitor setting first triple valve and the adsorbent equipment it
Between.
First triple valve and second triple valve are two-bit triplet solenoid valve in one of the embodiments,
First on-off valve and second on-off valve are solenoid valve；The volatile organic matter enriching apparatus further includes control system
System, the control system are led to first triple valve, second triple valve, first on-off valve, described second respectively
Disconnected valve, the input quantity monitor and temperature control equipment electrical connection.
The volatile organic matter enriching apparatus further includes collection vessel in one of the embodiments, and the collection is held
Device is connected to the injection port of first triple valve.
The enrichment gas circuit is additionally provided with purge gass pressure maintaining valve, the purge gass pressure maintaining valve in one of the embodiments,
It is arranged between the purge gass input terminal and first triple valve.
The volatile organic matter enriching apparatus further includes purging device of air, the purging in one of the embodiments,
Device of air is equipped with gas outlet, and the gas outlet is connected to the purge gass input terminal.
The enrichment gas circuit has multiple in one of the embodiments, and multiple enrichment gas circuits pass through input terminal multi-pass
Connector is connected with output end multiple-pass joint, and the purge gass of the input terminal multiple-pass joint and multiple enrichment gas circuits input
End connection, the output end multiple-pass joint are connect with the enriched substance output end of multiple enrichment gas circuits.
The temperature control equipment includes the heating dress connecting respectively with the adsorbent equipment in one of the embodiments,
It sets, refrigerating plant and temperature sensor.
The refrigerating plant is semiconductor chilling plate or air compressor in one of the embodiments,.
The temperature control equipment further includes coolant circulation system in one of the embodiments, and the coolant liquid is followed
Loop system is connect with the adsorbent equipment.
Compared with prior art, the utility model has the advantages that：
Volatile organic matter enriching apparatus provided by the utility model, by adsorbent equipment to the volatility in environmental gas
Organic matter carries out absorption and thermal desorption, the volatile organic matter after enrichment are brought into detecting instrument by purge gass, be can be improved
The detection sensitivity of detecting instrument reduces detection limit by 2 orders of magnitude, guarantees the high time resolution of instrument.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the volatile organic matter enriching apparatus of an embodiment；
Fig. 2 is the structural schematic diagram of the temperature control equipment of an embodiment；
Fig. 3 is the structural schematic diagram at another visual angle of temperature control equipment shown in Fig. 2.
Specific embodiment
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The preferred embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms in fact
It is existing, however it is not limited to embodiment described herein.On the contrary, purpose of providing these embodiments is makes public affairs to the utility model
The understanding for opening content is more thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein "and/or" includes
Any and all combinations of one or more related listed items.
As shown in Figure 1, the volatile organic matter enriching apparatus 10 of an embodiment, including enrichment gas circuit 100, temperature control
Device 200 and sampling pump 300.Wherein, the one end for being enriched with gas circuit 100 is purge gass input terminal, and the other end is enriched substance output end.
Enrichment gas circuit 100 from purge gass input terminal to enriched substance output end include the first triple valve 110 being sequentially communicated by gas-guide tube,
First on-off valve 120, adsorbent equipment 130, the second on-off valve 140 and the second triple valve 150.Wherein, it is arranged in adsorbent equipment 130
There is an adsorption stuffing, under room temperature or low temperature, adsorption stuffing can adsorb volatile organic matter, also, add to adsorption stuffing
After heat to certain temperature, volatile organic matter can be desorbed out.Sampling pump 300 is equipped with bleeding point, the bleeding point of sampling pump 300
It is connected to the gas outlet of the second triple valve 150, it will be understood that the gas outlet of the second triple valve 150 refers to leading to enrichment gas circuit
Interface outside 100.Adsorbent equipment 130 is connect with temperature control equipment 200, and temperature control equipment 200 is used for adsorbent equipment
130 carry out temperature control.
Wherein, the adsorption stuffing being arranged in adsorbent equipment 130 can be selected but be not limited to Tenax-TA adsorbent.
In an alternative embodiment, volatile organic matter enriching apparatus 10 further includes control system (not shown), control
System processed is controlled with the first triple valve 110, the second triple valve 150, the first on-off valve 120, the second on-off valve 140 and temperature respectively
Device 200 is electrically connected.In the present embodiment, the first triple valve 110 and the second triple valve 150 are two-bit triplet solenoid valve, first
On-off valve 120 and the second on-off valve 140 are solenoid valve.
In an alternative embodiment, enrichment gas circuit 100 further includes input quantity monitor 160, input quantity monitor 160
It is arranged between the first triple valve 110 and adsorbent equipment 130, and/or, input quantity monitor 160 is arranged in the second triple valve 150
Between adsorbent equipment 130.Preferably, the setting of input quantity monitor 160 the first triple valve 110 and the first on-off valve 120 it
Between, or be arranged between the second triple valve 150 and the second on-off valve 140.Optionally, input quantity monitor 160 is used for blowing
Scavenging body and/or the input quantity for acquiring gas are monitored.In a specific embodiment, the first triple valve 110 and first
Input quantity monitor 160 is provided between on-off valve 120, which can monitor the flow of purge gass, also can
The flow for the acquisition gas that enough monitoring are inputted from the first triple valve 110.
Still optionally further, control system is electrically connected with input quantity monitor 160.In an alternative embodiment, when
When input quantity monitor 160 detects that the input quantity of acquisition gas reaches predetermined value, control system controls 120 He of the first on-off valve
Second on-off valve 140 is closed.Further, control system control temperature control equipment 200 is heated to adsorbent equipment 130
After desired temperature, control system controls the first on-off valve 120 and the second on-off valve 140 is opened.
Still optionally further, control system is electrically connected with sampling pump 300.In an alternative embodiment, work as input quantity
When monitor 160 detects that the input quantity of acquisition gas reaches predetermined value, control system controls sampling pump 300 and closes.
In an alternative embodiment, adsorbent equipment 130 is dismountable, and be convenient for changing or change the outfit adsorption stuffing.It inhales
The shape of adsorption device 130 can be but not limited to tubulose, spherical or irregular shape etc..The number of adsorbent equipment 130 is not yet
It is limited to only one.Preferably, the aging temperature of adsorbent equipment 130 reaches 350 DEG C or more.
In an alternative embodiment, volatile organic matter enriching apparatus 10 further includes collection vessel (not shown), is received
Collection container is connected to the injection port of the first triple valve 110, and collection vessel, which can facilitate, is collected the gas of particular place.?
In one embodiment, collection vessel is polytetrafluoroethylene (PTFE) airbag.Volatile organic matter enriching apparatus 10 can be directly to ring
Border gas is acquired, and is passed through in enrichment gas circuit 100 and is enriched with after capable of also being sampled by collection vessel, thus, volatility
Organic matter enriching apparatus 10 can be enriched with location environmental gas, also can gas to other positions particular place into
Row enrichment.
In an alternative embodiment, enrichment gas circuit 100 is additionally provided with purge gass pressure maintaining valve 170, purge gass pressure maintaining valve
170 are arranged between purge gass input terminal and the first triple valve 110, to control the input pressure of purge gass, the input of purge gass
Setting is adjusted according to the requirement of the detecting instrument of cooperation in pressure.
Still optionally further, control system is electrically connected with purge gass pressure maintaining valve 170.In an alternative embodiment, when
When temperature control system is heated to setting value to adsorbent equipment 130, control system controls purge gass pressure maintaining valve 170 and opens.
In an alternative embodiment, volatile organic matter enriching apparatus 10 further includes purging device of air 400, purge gass
Device 400 is equipped with gas outlet, and gas outlet is connected to purge gass input terminal.
Still optionally further, control system is electrically connected with purging device of air 400.In an alternative embodiment, work as temperature
When degree control system is heated to setting value to adsorbent equipment 130, the past enrichment gas circuit 100 of control system control purging device of air 400
In be passed through purge gass.
In an alternative embodiment, enrichment gas circuit 100 has multiple, and multiple enrichment gas circuits 100 pass through input terminal multi-pass
Connector 180 and output end multiple-pass joint 190 connect, and the purge gass of input terminal multiple-pass joint 180 and multiple enrichment gas circuits 100 input
End connection, output end multiple-pass joint 190 are connect with the enriched substance output end of multiple enrichment gas circuits 100.Thus, it is possible to realize multiple
Enrichment gas circuit 100 carries out Enrichment simultaneously, improves bioaccumulation efficiency.It is alternatively possible to right by same temperature control device 200
Multiple adsorbent equipments 130 carry out temperature control, can also be respectively by multiple temperature control equipments 200 to multiple adsorbent equipments
130 carry out temperature control.In a specific embodiment, it is enriched with gas circuit 100 there are two volatile organic matter enriching apparatus tools,
The purge gass input terminal of two enrichment gas circuits 100 is connected by input terminal multiple-pass joint 180, the enrichment of two enrichment gas circuits 100
Object output end is connected by output end multiple-pass joint 190, one end that input terminal multiple-pass joint 180 is connect with purging device of air 400
It is connected with purge gass pressure maintaining valve 170.In the present embodiment, there are two temperature control dresses for the setting of volatile organic matter enriching apparatus 10
200 are set, temperature control is carried out to two adsorbent equipments 130 respectively.In other embodiments, enrichment gas circuit 100 can also have three
It is a, four etc..
As shown in Fig. 2, in an alternative embodiment, temperature control equipment 200 includes connecting respectively with adsorbent equipment 130
Heating device 210, refrigerating plant 220 and the temperature sensor 230 connect.
Optionally, heating device 210 can be but not limited to one of heat block, heating rod and heater strip or a variety of.
In a specific embodiment, heating device 210 includes heat block, heating rod and heater strip；Wherein, heat block and heating rod
It is bonded the outer wall of adsorbent equipment 130, and is fixed by fixed mechanism, heater strip passes through the adsorption stuffing in adsorbent equipment 130, passes through
Vacuum three-way connection (not shown) sealing and lead to be enriched with gas circuit 100 outside.In the present embodiment, pass through multiple heaters
Structure simultaneously heats adsorbent equipment, can be improved the heating rate of adsorbent equipment.
In an alternative embodiment, temperature control equipment 200 further includes coolant circulation system (not shown), cooling
Fluid circulation is connect with adsorbent equipment 130, to facilitate adsorbent equipment 130 from condition of high temperature fast cooling, improves working efficiency.
Optionally, refrigerating plant 220 can be but not limited to cooling piece, air compressor etc..In a specific implementation
In example, refrigerating plant 220 includes multiple semiconductor chilling plates.In another specific embodiment, refrigerating plant 220 is air
Compressor.In the present embodiment, avoid using liquid nitrogen or liquid CO2As refrigerant, that is, avoid refrigerant be not easy long-term preservation,
The problems such as being easy consumption, while reducing operating cost and being easier to realize the automation collection of atmospheric sample.
Temperature sensor 230 selects PT100 temperature sensor 230 in one of the embodiments,.
In an alternative embodiment, temperature control equipment 200 further includes mobile platform 240, is set on mobile platform 240
It is equipped with stepper motor 242 and mobile mechanism 244, stepper motor 242 is connect by transmission shaft (not shown) with mobile mechanism 244,
Stepper motor 242 drives mobile mechanism 244 to move on mobile platform 240, and refrigerating plant 220 is arranged in mobile mechanism 244,
Heating device 210 is fixed on mobile platform 240.In the present embodiment, refrigerating plant 220 includes cooling piece 222 and dissipates
Thermal 224, heating device 210 includes heat block, and when needing to cool down to adsorbent equipment 130, stepper motor 242, which drives, to be moved
Motivation structure 244 is mobile, contacts cooling piece 222 and heat block, realizes the cooling to adsorbent equipment 130；It needs to adsorbent equipment
130 when being heated up, and stepper motor 242 drives mobile mechanism 244 mobile, is made cooling piece 222 far from heating device 210, can be subtracted
Heat transfer in few heating process, to obtain faster heating rate.The start and stop of stepper motor 242 in one of the embodiments,
It is controlled by the optoelectronic switch 246 being arranged on mobile platform 240, to improve control sensitivity and accuracy.
Still optionally further, control system is electric with heating device 210, refrigerating plant 220 and temperature sensor 230 respectively
Connection.Control system can also be electrically connected with coolant circulation system, to control the open and close of coolant circulation system.
Above-mentioned volatile organic matter enriching apparatus 10, it is organic to the volatility in environmental gas by adsorbent equipment 130
Object carries out absorption and thermal desorption, the volatile organic matter after enrichment are brought into detecting instrument by purge gass, can be improved detection
The detection sensitivity of instrument reduces detection limit by 2 orders of magnitude, guarantees the high time resolution of instrument.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of volatile organic matter enriching apparatus, which is characterized in that including being enriched with gas circuit, sampling pump and temperature control equipment,
One end of the enrichment gas circuit is purge gass input terminal, and the other end is enriched substance output end, and the enrichment gas circuit is from the purging
Gas input terminal to the enriched substance output end includes the first triple valve being sequentially communicated by gas-guide tube, the first on-off valve, absorption
Device, the second on-off valve and the second triple valve, are provided with adsorption stuffing in the adsorbent equipment, and the adsorption stuffing can be to waving
Hair property organic matter carries out absorption and thermal desorption, and the sampling pump is equipped with bleeding point, the bleeding point and second triple valve
Gas outlet connection, the temperature control equipment are connect with the adsorbent equipment, and the temperature control equipment is used for the absorption
Device carries out temperature control.
2. volatile organic matter enriching apparatus as described in claim 1, which is characterized in that the enrichment gas circuit further includes input
Monitor is measured, for being monitored to the input quantity of gas, the input quantity monitor is arranged in institute the input quantity monitor
It states between the first triple valve and the adsorbent equipment.
3. volatile organic matter enriching apparatus as claimed in claim 2, which is characterized in that first triple valve and described
Two triple valves are two-bit triplet solenoid valve, and first on-off valve and second on-off valve are solenoid valve；The volatilization
Property organic matter enriching apparatus further includes control system, the control system respectively with first triple valve, second threeway
Valve, first on-off valve, second on-off valve, the input quantity monitor and temperature control equipment electrical connection.
4. volatile organic matter enriching apparatus as described in claim 1, which is characterized in that it further include collection vessel, the receipts
Collection container is connected to the injection port of first triple valve.
5. volatile organic matter enriching apparatus as described in claim 1, which is characterized in that the enrichment gas circuit, which is additionally provided with, blows
Scavenging pressure maintaining valve, the purge gass pressure maintaining valve are arranged between the purge gass input terminal and first triple valve.
6. volatile organic matter enriching apparatus as described in claim 1, which is characterized in that it further include purging device of air, it is described
It purges device of air and is equipped with gas outlet, the gas outlet is connected to the purge gass input terminal.
7. volatile organic matter enriching apparatus as described in any one of claims 1 to 6, which is characterized in that the enrichment gas circuit
Have multiple, multiple enrichment gas circuits are connected with output end multiple-pass joint by input terminal multiple-pass joint, the input terminal multi-pass
Connector is connect with the purge gass input terminal of multiple enrichment gas circuits, the output end multiple-pass joint and multiple enrichments
The enriched substance output end of gas circuit connects.
8. volatile organic matter enriching apparatus as described in any one of claims 1 to 6, which is characterized in that the temperature control
Device includes the heating device, refrigerating plant and temperature sensor connecting respectively with the adsorbent equipment.
9. volatile organic matter enriching apparatus as claimed in claim 8, which is characterized in that the refrigerating plant is semiconductor system
Cold or air compressor.
10. volatile organic matter enriching apparatus as claimed in claim 8, which is characterized in that the temperature control equipment also wraps
Coolant circulation system is included, the coolant circulation system is connect with the adsorbent equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820351866.0U CN208109558U (en) | 2018-03-14 | 2018-03-14 | Volatile organic matter enriching apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820351866.0U CN208109558U (en) | 2018-03-14 | 2018-03-14 | Volatile organic matter enriching apparatus |
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| Publication Number | Publication Date |
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| CN208109558U true CN208109558U (en) | 2018-11-16 |
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ID=64126504
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| CN201820351866.0U Active CN208109558U (en) | 2018-03-14 | 2018-03-14 | Volatile organic matter enriching apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109794162A (en) * | 2019-01-24 | 2019-05-24 | 河海大学 | A kind of indoor volatile organic compounds removal device based on thermal desorption Yu cold extraction |
| CN110274813A (en) * | 2018-03-14 | 2019-09-24 | 广州禾信仪器股份有限公司 | Volatile organic matter enriching apparatus and method |
| CN116399652A (en) * | 2023-06-09 | 2023-07-07 | 江苏新锐环境监测有限公司 | Volatile organic compound sampling detection method |
-
2018
- 2018-03-14 CN CN201820351866.0U patent/CN208109558U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274813A (en) * | 2018-03-14 | 2019-09-24 | 广州禾信仪器股份有限公司 | Volatile organic matter enriching apparatus and method |
| CN109794162A (en) * | 2019-01-24 | 2019-05-24 | 河海大学 | A kind of indoor volatile organic compounds removal device based on thermal desorption Yu cold extraction |
| CN116399652A (en) * | 2023-06-09 | 2023-07-07 | 江苏新锐环境监测有限公司 | Volatile organic compound sampling detection method |
| CN116399652B (en) * | 2023-06-09 | 2023-08-08 | 江苏新锐环境监测有限公司 | Volatile organic compound sampling detection method |
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Address after: 510535 No. 16, Xinrui Road, Huangpu District, Guangzhou, Guangdong Patentee after: GUANGZHOU HEXIN INSTRUMENT Co.,Ltd. Address before: 510530 Guangdong Guangzhou Guangzhou hi tech Industrial Development Zone, Science City, 11 yuan A3 Road third floor. Patentee before: GUANGZHOU HEXIN INSTRUMENT Co.,Ltd. |