CN208937547U - A kind of thermal desorption gas sample injection device and system - Google Patents
A kind of thermal desorption gas sample injection device and system Download PDFInfo
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- CN208937547U CN208937547U CN201821272832.9U CN201821272832U CN208937547U CN 208937547 U CN208937547 U CN 208937547U CN 201821272832 U CN201821272832 U CN 201821272832U CN 208937547 U CN208937547 U CN 208937547U
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- 238000003795 desorption Methods 0.000 title claims abstract description 53
- 238000002347 injection Methods 0.000 title claims abstract description 32
- 239000007924 injection Substances 0.000 title claims abstract description 32
- 239000007789 gas Substances 0.000 claims abstract description 107
- 239000012159 carrier gas Substances 0.000 claims abstract description 47
- 238000005070 sampling Methods 0.000 claims description 12
- 238000012546 transfer Methods 0.000 claims description 12
- 238000003908 quality control method Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 2
- 241001269238 Data Species 0.000 claims 1
- 230000004907 flux Effects 0.000 claims 1
- 238000004458 analytical method Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 239000003463 adsorbent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000033772 system development Effects 0.000 description 1
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Abstract
The utility model discloses a kind of thermal desorption gas sample injection device and system, which includes the first control valve, the second control valve, first flow adjuster, second flow adjuster, triple valve, six-way valve, quantitative loop and control module；Wherein, the flow for adjusting carrier gas and sample gas respectively is adjusted by first flow adjuster and second flow adjuster, the state of the first control valve, the second control valve, triple valve and six-way valve and the holding duration of state are controlled by control module again, realizes that the quantitative and quantitative loop of any amount for thermal desorption sample cell sample introduction is quantitative.Therefore, the thermal desorption gas sample injection device structure of the utility model is simple, easy to use, compared with loading quantitative loop input mode manually, can more guarantee precision of analysis.
Description
Technical field
The utility model relates to gas chromatograph pretreatment technology field, in particular to a kind of thermal desorption gas sample injection device
And system.
Background technique
In gas chromatograph pretreatment technology, thermal desorption is to be extracted the sample in adsorption tube by heating method gas
A kind of processing means taken out, due to being not suitable for organic solvent, and effect of extracting is preferable, so, by thermal desorption and gas phase
Chromatograph or gas chromatograph-mass spectrometer combination, are widely used for the detection of various organic matters, moreover, the sample being directed to is mainly gas
The monitoring of body, especially volatile organic matter in air, the almost indispensable technology of environmental monitoring.
For gas chromatographic analysis, since sample is gas, the characteristic of corresponding sample in all respects should also be use up
May be consistent with sample, in other words, it is gas that sample, which is preferably also,.Therefore, sample gas in steel cylinder heat is quantitatively transferred to take off
Attached sample cell, also, thermal desorption sample cell is made to be able to maintain required component.Currently, main using loading quantitative loop manually
Input mode, if in this way, thermal desorption sample cell must also be purged with inert gas, the sample for adding front
Product gas is adsorbed by the adsorbent in thermal desorption sample cell, due to loading quantitative loop manually and using inert blowing gas inswept
Cheng Zhong, sample gas can be exposed, it is most likely that and it is contaminated, and then the accuracy of impact analysis result.
Utility model content
The purpose of this utility model is that: provide that a kind of structure is simple, thermal desorption gas sample injection device easy to use.
In order to realize above-mentioned purpose of utility model, the technical solution adopted in the utility model are as follows:
A kind of thermal desorption gas sample injection device characterized by comprising the first control valve, the second control valve, first flow
Adjuster, second flow adjuster, triple valve, six-way valve, quantitative loop and control module；Wherein,
The first flow adjuster is used to adjust the flow for the carrier gas being passed through；The first flow adjuster passes through first
Carrier gas transfer branch is connected to the first port of the six-way valve and is connected to the threeway by the second carrier gas transfer branch
First input port of valve, moreover, first control valve is arranged on the first carrier gas transfer branch road, second control valve
It is arranged on the second carrier gas transfer branch road；
The second flow adjuster is used to adjust the flow for the sample gas being passed through；The second flow adjuster it is defeated
Outlet is connected to the second input port of the triple valve；The third port of the delivery outlet of the triple valve and the six-way valve connects
It is logical；
Two ports of the quantitative loop are respectively connected to the second port and fifth port of the six-way valve；Described six is logical
4th port of valve is respectively used to be connected to sample cell with the 6th port；
The control module is used to first control first control valve and second control valve is in an off state, described
Triple valve is in the state that the second input port is connected to delivery outlet, the six-way valve be in third port be connected to second port,
Fifth port and the 4th state that port is connected to and first port is connected to the 6th port, and the first duration is kept, then control
First control valve and second control valve is in the conductive state, the triple valve be in the first input port and delivery outlet company
Logical state, the six-way valve are in that first port is connected to second port, fifth port is connected to the 6th port and third
The state that port is connected to the 4th port, and keep the second duration；Wherein, the second duration is greater than the first duration.
According to a kind of specific embodiment, in the utility model thermal desorption gas sample injection device, the control module packet
Include first time controller and the second time controller；Wherein, the first time controller for control the triple valve and
The state of the six-way valve；Second time controller is used to control the shape of first control valve Yu second control valve
State.
Further, the first flow adjuster is also used to monitor the flow of carrier gas, and shows the carrier gas stream monitored
Measure data；The second flow adjuster is also used to monitor the flow of sample gas, and shows the sample gas flow monitored
Data.
Further, the utility model thermal desorption gas sample injection device further includes for controlling the first time controller
With starting switch for the power supply of second time controller.
Further, in the utility model thermal desorption gas sample injection device, the control module further include master controller and
Input equipment；Moreover, the input equipment is for inputting first flow control data, second flow control data and sample gas
The sample volume data of body；The first flow control data and second that the master controller is used to be inputted according to the input equipment
Amount control data, control the first flow adjuster and the second flow adjuster flow adjusted, Yi Jigen respectively
Data are controlled according to the sample volume data and first flow of input equipment input, the first duration data are obtained, further according to first
Duration data obtain the second duration data, and the first duration data are transferred to the first time controller, by the second duration
Data are transferred to second time controller.
According to a kind of specific embodiment, the utility model thermal desorption gas sample injection device further include the first pressure maintaining valve and
Second pressure maintaining valve；Wherein, first pressure maintaining valve is for stablizing the pressure for being transferred to the carrier gas of the first flow adjuster；Institute
State the second pressure maintaining valve for stablize be transferred to the second flow adjuster sample gas pressure.
The utility model also provides a kind of thermal desorption gas sampling system comprising carrier gas gas source, sample gas source and sheet
The thermal desorption gas sample injection device of utility model；Wherein, the carrier gas gas source and the sample gas source are for being respectively the heat
Desorption gas sampling device provides carrier gas and sample gas.
Further, the thermal desorption gas sampling system of the utility model further includes solid for placing the sample cell of sample cell
Determine frame.
Compared with prior art, the utility model has the beneficial effects that
The thermal desorption gas sample injection device of the utility model includes the first control valve, the second control valve, first flow adjusting
Device, second flow adjuster, triple valve, six-way valve device, quantitative loop and control module；Pass through first flow adjuster and second
It measures adjuster and adjusts the flow for adjusting carrier gas and sample gas respectively, then the first control valve, the second control are controlled by control module
The holding duration of valve processed, the state of triple valve and six-way valve and state realizes any amount for being directed to thermal desorption sample cell sample introduction
Quantitative and quantitative loop quantify.Therefore, the thermal desorption gas sample injection device structure of the utility model is simple, easy to use, with hand
The dynamic quantitative loop input mode that loads is compared, and can more guarantee precision of analysis.
Detailed description of the invention:
Fig. 1 is the control planning schematic diagram of utility model device；
Fig. 2 is the air circuit connection schematic diagram of utility model device；
Fig. 3 is a kind of embodiment schematic diagram of the control planning of utility model device；
Fig. 4 is another embodiment schematic diagram of the control planning of utility model device；
Fig. 5 is the air circuit connection schematic diagram of Tthe utility model system；
Fig. 6 is the process schematic that Tthe utility model system is in continuous fill pattern；
Fig. 7 is the process schematic that Tthe utility model system is in quantitative fill pattern.
Reference signs list
1- thermal desorption gas sample injection device, the first control valve of 101-, the second control valve of 102-, 103- triple valve, 104- six
Port valve, 105- quantitative loop, the first pressure maintaining valve of 106-, 107- first flow adjuster, the second pressure maintaining valve of 108-, 109- second flow
Adjuster, 2- carrier gas steel cylinder, 3- calibrating gas steel cylinder, 4- sample tube fixing device, 5- sample cell.
Specific embodiment
The utility model is described in further detail With reference to embodiment.But this should not be interpreted as to this
The range of the above-mentioned theme of utility model is only limitted to embodiment below, and all technologies realized based on the content of the present invention are belonged to
In the scope of the utility model.
As depicted in figs. 1 and 2, the thermal desorption gas sample injection device of the utility model comprising: the first control valve 101,
Two control valves 102, first flow adjuster 107, second flow adjuster 109, triple valve 103, six-way valve 104, quantitative loop 105
And control module.
First flow adjuster 107 is used to adjust the flow for the carrier gas being passed through.Moreover, first flow adjuster 107 passes through
First carrier gas transfer branch is connected to the first port of six-way valve 104, and is connected to threeway by the second carrier gas transfer branch
First input port of valve 103.Meanwhile first control valve 101 be arranged on the first carrier gas transfer branch road, with control the first carrier gas pass
The on-off of defeated branch, the second control valve 102 are arranged on the second carrier gas transfer branch road, to control the logical of the second carrier gas transfer branch
It is disconnected.
Second flow adjuster 109 is used to adjust the flow for the sample gas being passed through.Moreover, second flow adjuster 109
Delivery outlet be connected to the second input port of triple valve 103, the third port of the delivery outlet of triple valve 103 and six-way valve 104 connects
It is logical.
Two ports of quantitative loop 105 are respectively connected to the second port and fifth port of six-way valve 104；Six-way valve 104
The 4th port be respectively used to be connected to sample cell with the 6th port.
Control module is for first controlling the first control valve 101 and the in an off state, triple valve 103 of the second control valve 102
The state that is connected in the second input port with delivery outlet, six-way valve 104 be in third port be connected to second port, fifth port
With the 4th state that port is connected to and first port is connected to the 6th port, and the first duration T1 is kept, then controls the first control
Valve 101 processed and the second control valve are 102 in the conductive state, triple valve 103 is in state that the first input port is connected to delivery outlet,
Six-way valve 104 is in that first port is connected to second port, fifth port is connected to the 6th port and third port and the 4th
The state of port connection, and keep the second duration T2；Wherein, the second duration T2 is greater than the first duration T1.
In the utility model thermal desorption gas sample injection device, control module completes the by configuring corresponding control parameter
The setting of one duration T1 and the second duration T2.
As shown in Fig. 2, the utility model thermal desorption gas sample injection device further includes in order to more effectively realize that flow is adjusted
First pressure maintaining valve 106 and the second pressure maintaining valve 108.Wherein, the first pressure maintaining valve 106 is transferred to first flow adjuster for stabilization
The pressure of 107 carrier gas；Second pressure maintaining valve 108 is transferred to the pressure of the sample gas of second flow adjuster 109 for stablizing.
As shown in figure 3, in the utility model thermal desorption gas sample injection device, control module include first time controller and
Second time controller.Wherein, first time controller is used to control the state of triple valve and six-way valve；Second time controller
For controlling the state of the first control valve and the second control valve.
Further, the thermal desorption gas sample injection device of the utility model further includes starting switch.Moreover, starting switch use
In the power supply of control first time controller and the second time controller.Specifically, first time controller and the control of the second time
The power supply of device processed, can be used storage battery power supply, can also connect socket by power supply adaptor and realize power supply.It is closed when starting switch
When, first time controller and the second time controller get power supply, first time controller and the control of the second time simultaneously
It after device starting, works, is realized to the first control valve, the second control valve, triple valve and six-way valve according to respective setup parameter
Control.
In the thermal desorption gas sample injection device of the utility model, the first control valve, the second control valve, triple valve and six-way valve
It is common electric actuator.Wherein, the first control valve, the second control valve are solenoid valve.
When the thermal desorption gas sample injection device work of the utility model, sample gas sample volume is quantified in order to realize,
It needs to set the first duration T1 and sample gas flow, therefore, first flow adjuster and second flow adjuster need
It selects with the electronic flow adjuster for monitoring and showing traffic engineering capability.
Specifically, staff adjusts the flow of sample gas, and combine electron stream by adjusting second flow adjuster
The data on flows of the sample gas shown on amount adjuster is combining needs to set a suitable sample gas flow
The sample gas flow of sample volume and setting can calculate the first duration T1.Finally by operation first time controller
Key, come deadline parameter setting.After calculating the first duration T1, staff is according to obtained by practical operation
Empirical value, it is only necessary to the time of carrier gas purge is greater than time for being passed through of sample gas, therefore, in the second time controller
Upper setting one is greater than the time parameter of the first duration T1, the i.e. corresponding time parameter of the second duration T2.
Certainly, those skilled in the art also know that electronic flow adjuster can be using common flow regulator with interflow
Meter is replaced, to realize equivalent function.
As shown in figure 4, control module further includes master controller and input in the utility model thermal desorption gas sample injection device
Equipment.Moreover, input equipment is used to input the sample introduction of first flow control data, second flow control data and sample gas
Measure data.The first flow control data and second flow that master controller is used to be inputted according to input equipment control data, respectively
Control first flow adjuster and second flow adjuster flow adjusted, and the sample volume number inputted according to input equipment
Data are controlled according to first flow, the first duration data is obtained, further according to the first duration data, obtains the second duration data, and
First duration data are transferred to first time controller, the second duration data are transferred to the second time controller.
Specifically, the first flow adjuster and second flow adjuster that use in the present embodiment are that automatically controlled flow is adjusted
Device, the time controller of use have parameter/configuration interface, and master controller with the parameter/configuration interface of time controller by connecting
It connects, to complete the transmission and configuration of duration data.
For the input equipment used in the present embodiment for keyboard, master controller can be based on microcomputer development or miniature calculating
Machine system development forms, and realizes the automatic control of the interactive controlling and flow regulator and time controller of input equipment.
As shown in figure 5, the utility model also provides a kind of thermal desorption gas sampling system comprising carrier gas gas source, standard
Gas source and thermal desorption gas sample injection device 1.Carrier gas gas source and calibrating gas gas source for be respectively thermal desorption gas into
Sampling device 1 provides carrier gas and calibrating gas.Wherein, carrier gas gas source is the steel cylinder 2 equipped with carrier gas, and calibrating gas gas source is equipped with mark
The steel cylinder 3 of quasi- gas.
Further, in order to facilitate the placement of sample cell, the thermal desorption gas sampling system of the utility model further includes using
In the sample tube fixing device 4 for placing sample cell 5.
As shown in fig. 6, the thermal desorption gas sampling system of the utility model works in continuous fill pattern, wherein by sample
Quality control is placed on sample holder, and sample cell is connected to the 4th port of six-way valve.
Specific workflow are as follows:
A: debugging and sets the flow of carrier gas and sample gas.
B: being passed through the sample gas of the first duration to six-way valve, and sample gas successively passes through third port, second port, determines
Amount ring, fifth port enter in sample cell behind the 4th port.
C: being passed through the carrier gas of the second duration to six-way valve, and carrier gas enters after third port and the 4th port all the way
In sample cell；First port, second port, quantitative loop, fifth port are successively passed through in another way carrier gas, finally by the 6th port
Discharge.Wherein, the second duration is greater than the first duration, and the first duration is set according to the sample volume and flow of sample gas.
Therefore, the thermal desorption gas sampling system of the utility model works in continuous fill pattern, can be realized and is directed to
Any amount of thermal desorption sample cell sample introduction quantifies.
As shown in fig. 7, the thermal desorption gas sampling system of the utility model works in continuous fill pattern, wherein by sample
Quality control is placed on sample holder, and sample cell is connected to the 6th port of six-way valve.
Specific workflow are as follows:
A, debugging and the flow of carrier gas and sample gas is set.
B: being passed through the sample gas of the first duration to six-way valve, and sample gas successively passes through third port, second port, determines
Ring, fifth port are measured, is discharged finally by the 4th port.
C: being passed through the carrier gas of the second duration to six-way valve, and carrier gas is discharged after third port and the 4th port all the way, separately
First port, second port, quantitative loop, fifth port are successively passed through in carrier gas all the way, behind the 6th port, enter sample
In quality control.Wherein, the second duration is greater than the first duration.Moreover, as long as sample gas is by the first duration satisfaction full of quantitative loop
It can.
Therefore, the thermal desorption gas sampling system of the utility model works in continuous fill pattern, can be realized and is directed to
The quantitative loop of thermal desorption sample cell sample introduction is quantitative.
Specific embodiment of the present utility model is described in detail above in conjunction with attached drawing, but the utility model is not
It is limited to above embodiment, in the spirit and scope for not departing from claims hereof, those skilled in the art
Member can be with various modification can be adapted or remodeling.
Claims (8)
1. a kind of thermal desorption gas sample injection device characterized by comprising the first control valve, the second control valve, first flow tune
Save device, second flow adjuster, triple valve, six-way valve, quantitative loop and control module；Wherein,
The first flow adjuster is used to adjust the flow for the carrier gas being passed through；The first flow adjuster passes through the first carrier gas
Transmission branch is connected to the first port of the six-way valve and is connected to the triple valve by the second carrier gas transfer branch
First input port, moreover, first control valve is arranged on the first carrier gas transfer branch road, the second control valve setting
On the second carrier gas transfer branch road；
The second flow adjuster is used to adjust the flow for the sample gas being passed through；The delivery outlet of the second flow adjuster
It is connected to the second input port of the triple valve；The delivery outlet of the triple valve is connected to the third port of the six-way valve；
Two ports of the quantitative loop are respectively connected to the second port and fifth port of the six-way valve；The six-way valve
4th port is respectively used to be connected to sample cell with the 6th port；
The control module is for first controlling first control valve in an off state, described threeway with second control valve
Valve is in the state that the second input port is connected to delivery outlet, the six-way valve be in third port be connected to second port, the 5th
Port and the 4th state that port is connected to and first port is connected to the 6th port, and the first duration is kept, then control described
First control valve and second control valve be in the conductive state, the triple valve is in what the first input port was connected to delivery outlet
State, the six-way valve are in that first port is connected to second port, fifth port is connected to the 6th port and third port
The state being connected to the 4th port, and keep the second duration；Wherein, the second duration is greater than the first duration.
2. thermal desorption gas sample injection device as described in claim 1, which is characterized in that the control module includes at the first time
Controller and the second time controller；Wherein, the first time controller is for controlling the triple valve and the six-way valve
State；Second time controller is used to control the state of first control valve Yu second control valve.
3. thermal desorption gas sample injection device as claimed in claim 2, which is characterized in that the first flow adjuster is also used to
The flow of carrier gas is monitored, and shows the carrier gas flux data monitored；The second flow adjuster is also used to monitor sample gas
The flow of body, and show the sample gas flow data monitored.
4. thermal desorption gas sample injection device as claimed in claim 2, which is characterized in that when further including for controlling described first
Between controller and the power supply of second time controller start switch.
5. thermal desorption gas sample injection device as claimed in claim 2, which is characterized in that the control module further includes main control
Device and input equipment；Moreover, the input equipment is for inputting first flow control data, second flow control data and sample
The sample volume data of product gas；The first flow that the master controller is used to input according to the input equipment controls data and the
Two flow control datas control the first flow adjuster and the second flow adjuster flow adjusted respectively, with
And data are controlled according to the sample volume data and first flow of input equipment input, the first duration data are obtained, further according to
First duration data obtain the second duration data, and the first duration data are transferred to the first time controller, by second
Duration data are transferred to second time controller.
6. thermal desorption gas sample injection device as described in claim 1, which is characterized in that further include that the first pressure maintaining valve and second are steady
Pressure valve；Wherein, first pressure maintaining valve is for stablizing the pressure for being transferred to the carrier gas of the first flow adjuster；Described second
Pressure maintaining valve is transferred to the pressure of the sample gas of the second flow adjuster for stablizing.
7. a kind of thermal desorption gas sampling system, which is characterized in that including carrier gas gas source, sample gas source and such as claim 1
Thermal desorption gas sample injection device described in one of~6；Wherein, the carrier gas gas source and the sample gas source are for being respectively described
Thermal desorption gas sample injection device provides carrier gas and sample gas.
8. thermal desorption gas sampling system as claimed in claim 7, which is characterized in that further include the sample for placing sample cell
Quality control fixed frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821272832.9U CN208937547U (en) | 2018-08-08 | 2018-08-08 | A kind of thermal desorption gas sample injection device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821272832.9U CN208937547U (en) | 2018-08-08 | 2018-08-08 | A kind of thermal desorption gas sample injection device and system |
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| Publication Number | Publication Date |
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| CN208937547U true CN208937547U (en) | 2019-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821272832.9U Withdrawn - After Issue CN208937547U (en) | 2018-08-08 | 2018-08-08 | A kind of thermal desorption gas sample injection device and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108732287A (en) * | 2018-08-08 | 2018-11-02 | 成都科林分析技术有限公司 | A kind of thermal desorption gas sample injection device and method |
-
2018
- 2018-08-08 CN CN201821272832.9U patent/CN208937547U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108732287A (en) * | 2018-08-08 | 2018-11-02 | 成都科林分析技术有限公司 | A kind of thermal desorption gas sample injection device and method |
| CN108732287B (en) * | 2018-08-08 | 2024-01-12 | 成都科林分析技术有限公司 | Thermal desorption gas sampling device and method |
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