CN205910045U - Laser ablation sampling system - Google Patents
Laser ablation sampling system Download PDFInfo
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- CN205910045U CN205910045U CN201620744854.5U CN201620744854U CN205910045U CN 205910045 U CN205910045 U CN 205910045U CN 201620744854 U CN201620744854 U CN 201620744854U CN 205910045 U CN205910045 U CN 205910045U
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Abstract
The utility model discloses a laser ablation sampling system, include and set gradually first on -off valve, buffer tank and the fourth on -off valve in the main line from top to end, still include and set gradually outer cavity and the second on -off valve in first bye -pass from top to end, still include and set gradually sample room and the third on -off valve in the second bye -pass from top to end, it is indoor that the sample room is located the exocoel, set up relative introduction port on the sample room and go out the appearance mouth, still including setting up at the indoor sample sending device of exocoel, sample sending device includes through the introduction port and goes out the sample holder strip that appearance mouthful slidable ground runs through the sample room to and be connected and be used for driving sample holder strip gliding drive arrangement on the straight line is located to introduction port and play appearance mouth with the sample holder strip. The utility model discloses an automatic of sample is changed, need not frequently to open the sample room to avoided causing the influence because of frequently opening the gas circuit of sample room in to laser ablation sampling system.
Description
Technical field
This utility model is related to inorganic elementss and isotope analyses technical field of measurement and test, more particularly, to inductive etc.
The mass spectrographic preprocessing system of gas ions is and in particular to a kind of laser ablation sampling system.
Background technology
Laser ablation, can be with multiple analytical tool connection such as inductivity coupled plasma mass spectrometries used as new in situ sampling technology
With.Laser ablation can be prevented effectively from conventional wet and clear up sample broke, loaded down with trivial details time-consuming, the volatile determinand of sample preparation that sample preparation brings
The problems such as Polyatomic ion of the water in loss and digestion solution and acid initiation.
But, existing laser ablation sampling system, its sample room once can only accommodate a small amount of sample.In operation process
In, need frequently to open sample room to change sample, thus easily impacting to the gas circuit in laser ablation sampling system.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of laser stripping possessing sample conveying device
Erosion sampling system, sample can be automatically fed into sample room by it, frequently need not open sample room, thus avoiding laser ablation is entered
Gas circuit in sample system impacts.
Embodiment of the present utility model is achieved through the following technical solutions:
Laser ablation sampling system, including the main line, the first bye-pass and the second bye-pass that possess top and end；The
The top of one bye-pass is connected with the end of main line, and the top of the second bye-pass is connected with the end of main line；Laser ablation
Sampling system also includes the first on-off valve, surge tank and the 4th on-off valve being successively set on main line from top to end；
Laser ablation sampling system also includes exocoel and the second on-off valve being successively set on the first bye-pass from top to end；
Laser ablation sampling system also includes sample room and the 3rd on-off valve being successively set on the second bye-pass from top to end；
It is indoor that sample room is located at exocoel；Relative injection port and outlet are offered on sample room；Laser ablation sampling system also includes
It is arranged on the indoor sample conveying device of exocoel, sample conveying device includes slidably extending through the sample of sample room by injection port and outlet
Product support bar, and be connected with sample carrier bar and the drive driving sample carrier bar to slide is used on straight line residing for injection port and outlet
Dynamic device.
In order to avoid frequently opening sample room in operation process, in embodiment of the present utility model, inventor is arranged
Possesses the sample conveying device of sample carrier bar and driving means.Multiple samples are undertaken on sample carrier bar, driving means drive sample
Support bar motion, makes the sample on sample carrier bar enter sample indoor.Sample room is carried out after laser ablation to this sample, drives
Device drives the motion of sample carrier bar, makes another untreated sample enter sample indoor.And so on, you can realize sample
Automatically change, frequently need not open sample room, thus avoiding because frequent sample room of opening is in laser ablation sampling system
Gas circuit impacts.
However, inventor finds during realizing this utility model embodiment, due to sample carrier bar and injection port, go out
Relative motion can be produced between sample mouth, therefore, it is difficult to real between sample carrier bar and injection port, between sample carrier bar and outlet
Now fully seal, after sample being carried out with laser ablation and obtains sample particle cloud, sample particle cloud easily pass through injection port and
It is outdoor that outlet leaks to sample.Inventor finds through research, and why the indoor sample particle cloud of sample is easily by entering
Sample mouth and outlet are revealed, and are the indoor intrinsic pressure pressure outdoor more than sample of sample due to after producing sample particle cloud,
Sample particle cloud is led to leak in the presence of the external and internal pressure difference of sample room.
For this reason, inventor is provided with exocoel, the first bye-pass and the second bye-pass in laser ablation sampling system.?
When laser ablation is carried out to sample, carrier gas is sent into exocoel and sample room by the first bye-pass and the second bye-pass simultaneously,
Make the exocoel pressure indoor with sample consistent, eliminate the pressure differential inside and outside sample room.So can avoid due to sample interior
The sample particle cloud leakage that external pressure difference leads to.
In a kind of embodiment of the present utility model, laser ablation sampling system also includes first pressure meter, second pressure
Meter and the 3rd piezometer；
First pressure meter is arranged in main line, and is located between the first on-off valve and surge tank；Second pressure meter is arranged
In the first bye-pass, and it is located between exocoel and the second on-off valve；3rd piezometer is arranged in the second bye-pass, and position
Between sample room and the 3rd on-off valve.
In a kind of embodiment of the present utility model, laser ablation sampling system also includes effusion meter, and effusion meter is arranged at
In second bye-pass, effusion meter is located between top and the sample room of the second bye-pass.
In a kind of embodiment of the present utility model, laser ablation sampling system also includes three-way valve and vacuum pump；Threeway
Valve possesses first interface, second interface and the 3rd interface, and the 3rd interface is connected with the end of the second bye-pass, first interface with true
Empty pump connects.
In a kind of embodiment of the present utility model, laser ablation sampling system also includes signal homogenizer, and signal homogenizes
Device is arranged in the second bye-pass, and signal homogenizer is located between the 3rd on-off valve and the end of the second bye-pass.
In a kind of embodiment of the present utility model, signal homogenizer includes first end, the second end and many companies
Logical first end and the capillary tube of the second end；First end and the second end are connected in the second bye-pass.
In a kind of embodiment of the present utility model, first end includes the first head cavity being interconnected and the first adapter；
The second end includes the second head cavity being interconnected and the second adapter；Capillary tube connects the first head cavity and the second head cavity；First connects
Pipe and the second adapter are connected in the second bye-pass.
In a kind of embodiment of the present utility model, the outer wall of the first head cavity includes the first connection plane and connects with first
Connect the first cover body of flat seal connection, the first adapter is connected with the first cover body, the first adapter is parallel with the first connection plane；
The second cover body that the outer wall of the second head cavity includes the second connection plane and is connected flat seal connection with second, the
Two adapters are connected with the second cover body, and the second adapter is parallel with the second connection plane；
The two ends of capillary tube are connected to the first connection plane and second and connect in plane.
In a kind of embodiment of the present utility model, the length of multiple capillary tubies is different.
In a kind of embodiment of the present utility model, sample carrier bar offers sample receiving hole.
The technical solution of the utility model at least has the advantage that and beneficial effect:
Setting sample conveying device, realizes the automatic replacing of sample, frequently need not open sample room, thus avoiding because frequently opening
Open sample room the gas circuit in laser ablation sampling system is impacted.Meanwhile, setting exocoel, the first bye-pass and second
Pipeline.When laser ablation is carried out to sample, sent to exocoel and sample room by the first bye-pass and the second bye-pass simultaneously
Enter carrier gas, make the exocoel pressure indoor with sample consistent, eliminate the pressure differential inside and outside sample room.So avoid due to sample
The sample particle cloud leakage that indoor and outdoor pressure differential leads to.
Brief description
In order to clearer explanation this utility model embodiment technical scheme, below to need in embodiment use attached
Figure is briefly described.It should be appreciated that the following drawings illustrate only some embodiments of the present utility model, it is right to be not construed as
The restriction of this utility model scope.To those skilled in the art, in the case of not paying creative work, Neng Gougen
Obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the structural representation of laser ablation sampling system in this utility model embodiment；
Fig. 2 is the installation diagram of sample conveying device and sample room in this utility model embodiment；
Fig. 3 is the structural representation of signal homogenizer in this utility model embodiment；
Fig. 4 is another kind of structural representation of laser ablation sampling system in this utility model embodiment；
Wherein, the corresponding parts title of reference is as follows:
100- laser ablation sampling system, 110- main line, 120- first bye-pass, 130- second bye-pass, 141-
One on-off valve, 142- second on-off valve, 143- the 3rd on-off valve, 144- the 4th on-off valve, 145- surge tank, 146- exocoel,
147- sample room, 147-1- small bore end, 147-2- injection port, 147-3- outlet, 147-4- sealing ring, 150- sample presentation fills
Put, 151- sample carrier bar, 152- sliding shoe, 153- groove, 154- sample receiving hole, 155- slide rail, 161- first pressure meter, 162-
Second pressure meter, 163- the 3rd piezometer, 164- effusion meter, 165- air relief valve, 170- signal homogenizer, 171- first end,
171-1- first head cavity, 171-11- first connects plane, 171-12- first cover body, and 171-2- first takes over, 172- second end
Portion, 172-1- second head cavity, 172-11- second connects plane, 172-12- second cover body, and 172-2- second takes over, 173- capillary
Pipe, 180- vacuum pump, 190- three-way valve, 191- first interface, 192- second interface, 193- the 3rd interface, 200- mass spectrograph.
Specific embodiment
Purpose, technical scheme and advantage for making this utility model embodiment are clearer, below in conjunction with accompanying drawing, to this
Technical scheme in utility model embodiment carries out clear, complete description.Obviously, described embodiment is this utility model
A part of embodiment, rather than whole embodiment.
Therefore, below the detailed description of embodiment of the present utility model is not intended to limit with this claimed practicality new
The scope of type, but it is merely representative of section Example of the present utility model.Based on the embodiment in this utility model, this area is general
The every other embodiment that logical technical staff is obtained under the premise of not making creative work, broadly falls into this utility model and protects
The scope of shield.
It should be noted that in the case of not conflicting, the embodiment in this utility model and the feature in embodiment and
Technical scheme can be mutually combined.
It should also be noted that similar label and letter expression similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then do not need it to be defined further and explains in subsequent accompanying drawing.
In description of the present utility model, it should be noted that term " first ", " second ", " the 3rd " etc. are only used for area
Divide description, and it is not intended that indicating or hint relative importance.
Embodiment 1:
With reference to Fig. 1, Fig. 1 is the structural representation of laser ablation sampling system 100 in this utility model embodiment.Laser is shelled
Erosion sampling system 100, including main line 110, the first bye-pass 120 and the second bye-pass 130.Main line 110 possess top and
End, operationally, gas flows from the top of main line 110 to the end of main line 110, i.e. gas a direction in FIG
Upper flowing.First bye-pass 120 also possesses top and end, and the top of the first bye-pass 120 is connected with the end of main line 110
Connect.Enter the first bye-pass 120 from main line 110 end effluent air, and from the top of the first bye-pass 120 to first
The end flowing of pipeline 120, that is, gas b side in FIG flows up.Second bye-pass 130 also possesses top and end, the
The top of two bye-passes 130 is connected with the end of main line 110.Enter the second arm from main line 110 end effluent air
Road 130, and flow from the top of the second bye-pass 130 to the end of the second bye-pass 130, that is, on gas c direction in FIG
Flowing.
Laser ablation sampling system 100 also includes being successively set on from the top of main line 110 to the end of main line 110
The first on-off valve 141 in main line 110, surge tank 145 and the 4th on-off valve 144.Laser ablation sampling system 100 also includes
End from the top of the first bye-pass 120 to the first bye-pass 120 is successively set on the exocoel the first bye-pass 120
146 and second on-off valve 142.Laser ablation sampling system 100 is also included from the top of the second bye-pass 130 to the second bye-pass
130 end is successively set on sample room 147 and the 3rd on-off valve 143 in the second bye-pass 130.Sample room 147 is located at outer
In chamber 146, the 3rd on-off valve 143 is located at outside exocoel 146.Laser ablation sampling system 100 also includes being arranged on exocoel
Sample conveying device 150 in 146.
First on-off valve 141, the second on-off valve 142, the 3rd on-off valve 143 and the 4th on-off valve 144 are used for control piper
Break-make, it can adopt angle valve, butterfly valve, gate valve, ball valve etc. can be with the valve of control piper break-make.In the present embodiment,
One on-off valve 141, the second on-off valve 142, the 3rd on-off valve 143 are stop valve, and the 4th on-off valve 144 is bi-bit bi-pass electromagnetism
Valve.
With reference to Fig. 2, Fig. 2 is the installation diagram of sample conveying device 150 and sample room 147 in this utility model embodiment.Sample room
147 entirety are in spindle, and sample room 147 possesses relative two small bore end 147-1.Two small bore end 147-1 are connected to
In second bye-pass 130, gas from one of small bore end 147-1 flow into sample room 147, the gas in sample room 147 from
Another small bore end 147-1 flows out.Relative injection port 147-2 and outlet 147-3 is offered on the wall of sample room 147.
Sample carrier bar 151 is strip plate.Sample carrier bar 151 passes through injection port 147-2 and outlet 147-3 slidably
Ground runs through sample room 147.Driving means include slide rail 155, and the cunning being connected with the two ends on sample carrier bar 151 length direction
Motion block 152.Groove 153 is offered on slide rail 155, sliding shoe 152 is slidably disposed in groove 153.Driving means also include figure
Not shown in power output portion, for driving sliding shoe 152 to slide in groove 153, thus driving sample carrier bar 151 in sample introduction
Slide on mouth 147-2 and straight line residing for outlet 147-3.Power output portion can using hydraulic cylinder, pneumatic cylinder, linear electric motors,
Screw pair etc. can drive the device of sliding shoe 152 linear motion.
It should be noted that in other specific embodiments, driving means can be only with direct and sample carrier bar 151
The devices such as the hydraulic cylinder of connection, pneumatic cylinder, linear electric motors, screw pair, as long as sample carrier bar 151 can be driven in injection port
Slide on 147-2 and straight line residing for outlet 147-3.
The operation principle of laser ablation sampling system 100 is as follows:
Multiple samples are fixed on sample carrier bar 151, sample is evenly distributed on the length direction of sample carrier bar 151.
Referring again to Fig. 1.Close the second on-off valve 142, the 3rd on-off valve 143 and the 4th on-off valve 144, open first and lead to
Disconnected valve 141.Send into carrier gas (noble gases, such as helium) from the top of main line 110, carrier gas enters surge tank 145, makes buffering
Pressure in tank 145 is maintained at 0.2-0.3mpa.Open the second on-off valve 142, the 3rd on-off valve 143 and the 4th on-off valve 144,
The first bye-pass 120 is passed through in carrier gas in surge tank 145 and the second bye-pass 130 empties, thus to laser ablation sampling system
100 whole pipeline is carried out.Close the second on-off valve 142 and the 3rd on-off valve 143.End by the second bye-pass 130
It is connected with mass spectrograph 200.
Driving means drive sample carrier bar 151 to slide, and make a sample on sample carrier bar 151 enter sample room 147.From
Carrier gas is sent at the top of main line 110, and carrier gas enters surge tank 145, exocoel 146 and sample room 147.Keep surge tank 145
In pressure position 0.2-0.3mpa.Pressurize 5-10min, makes the pressure in exocoel 146 and sample room 147 basically identical.
Close the first on-off valve 141, the sample in sample room 147 is carried out with laser ablation, obtain sample particle cloud.Open
3rd on-off valve 143, the sample particle cloud bar in sample room 147 from sample room 147, is delivered to matter by the carrier gas in surge tank 145
Spectrometer 200 is analyzed.After the completion of analysis, close the 3rd on-off valve 143.
Constantly repeat the above steps, you can laser ablation and analysis are carried out to each sample on sample carrier bar 151.
By sample conveying device 150, you can realize the automatic replacing of sample, need not frequently open sample room 147, thus avoiding
Because frequent sample room 147 of opening impacts to the gas circuit in laser ablation sampling system 100.
However, inventor finds during realizing this utility model embodiment, due to sample carrier bar 151 and injection port
Relative motion can be produced between 147-2, outlet 147-3, therefore, it is difficult between sample carrier bar 151 and injection port 147-2, sample
Realize fully sealing between product support bar 151 and outlet 147-3, sample is being carried out with laser ablation and is obtaining sample particle cloud
Afterwards, sample particle cloud is easily leaked to outside sample room 147 by injection port 147-2 and outlet 147-3.Inventor is through research
Find, why the sample particle cloud in sample room 147 is revealed easily by injection port 147-2 and outlet 147-3, be due to
After producing sample particle cloud, intrinsic pressure in sample room 147 more than sample room 147 outside pressure, in sample room 147 external and internal pressure
Sample particle cloud is led to leak in the presence of difference.
For this reason, inventor is provided with exocoel 146, the first bye-pass 120 and second in laser ablation sampling system 100
Bye-pass 130.When laser ablation is carried out to sample, by the first bye-pass 120 and the second bye-pass 130 simultaneously to exocoel
146 and sample room 147 send into carrier gas, make exocoel 146 consistent with the pressure in sample room 147, elimination sample room 147 inside and outside
Pressure differential.The sample particle cloud leading to due to sample room 147 external and internal pressure difference so can be avoided to leak.
In laser ablation sampling system 100 work process, need to check surge tank 145, exocoel 146 and sample room
Pressure in 147.Pressure can be realized by setting pressure transducer in surge tank 145, exocoel 146 and sample room 147
Detection.In the present embodiment, pressure is realized by first pressure meter 161, second pressure meter 162 and the 3rd piezometer 163
Detection.First pressure meter 161 meter is arranged in main line 110, and is located between the first on-off valve 141 and surge tank 145.First
Piezometer 161 is used for detecting the pressure in surge tank 145.Second pressure meter 162 is arranged in the first bye-pass 120, and is located at
Between exocoel 146 and the second on-off valve 142.Second pressure meter 162 is used for detecting the pressure in exocoel 146.3rd pressure
Meter 163 is arranged in the second bye-pass 130, and is located between sample room 147 and the 3rd on-off valve 143.3rd piezometer 163
Outside exocoel 146, for the pressure in detection sample room 147.
In the case that the nebulizer gas pressure of input main line 110 is excessive, air relief valve can also be set in main line 110
165, air relief valve 165 is located between top and first on-off valve 141 of main line 110.
In the work process of laser ablation sampling system 100, in order to by the sample particle cloud one in sample room 147
Secondary property take away sample room 147, need to be controlled to entering the carrier gas flux in sample room 147.For this reason, stream can also be arranged
Gauge 164.Effusion meter 164 is arranged in the second bye-pass 130, and effusion meter 164 is located at top and the sample of the second bye-pass 130
Between room 147.Effusion meter 164 is located at outside exocoel 146.In the course of the work, laser stripping is carried out to the sample in sample room 147
After losing and obtain sample particle cloud, open the 3rd on-off valve 143, the carrier gas in surge tank 145 is entered sample room by effusion meter 164
147 flow-control is in 0.6l/min.So, the sample particle cloud in sample room 147 is disposably taken away sample room by carrier gas
147, deliver to mass spectrograph 200 and be analyzed.
Carrier gas by the sample particle cloud bar in sample room 147 from sample room 147 and during entering mass spectrograph 200,
There may be between carrier gas and sample particle cloud cannot mixed uniformly situation, this will lead to enter mass spectrograph 200 sample
Grain cannot be uniformly distributed, and affects testing result.For this reason, in the present embodiment, signal homogenizer 170 can also be set.Signal is even
Change device 170 to be arranged in the second bye-pass 130, signal homogenizer 170 is located at the 3rd on-off valve 143 and the second bye-pass 130
Between end.Signal homogenizer 170 is used for making carrier gas uniformly mix with sample particle cloud, so that entering mass spectrograph 200
Sample particle is uniformly distributed.
In the present embodiment, signal homogenizer 170 adopts following structure.With reference to Fig. 3, Fig. 3 is this utility model embodiment
The structural representation of middle signal homogenizer 170.Signal homogenizer 170 includes first end 171, the second end 172 and many
Connection first end 171 and the capillary tube 173 of the second end 172；First end 171 and the second end 172 are connected to second
In pipeline 130.It is mixed with the carrier gas of sample particle cloud and entering the with the second bye-pass 130 after the 3rd on-off valve 143
One end 171, enters the second end 172 after then passing through capillary tube 173 again.This process makes sample particle cloud and carrier gas carry out
Mix again, thus improving the mixing uniformity of sample particle cloud and carrier gas.
In the present embodiment, first end 171 includes the first head cavity 171-1 being interconnected and the first adapter 171-2.The
Two ends 172 include the second head cavity 172-1 being interconnected and the second adapter 172-2.Capillary tube 173 connects the first head cavity 171-
1 and the second head cavity 172-1.First adapter 171-2 and the second adapter 172-2 is connected in the second bye-pass 130.First head cavity
The outer wall of 171-1 includes the first connection plane 171-11 and is connected the first cover body that plane 171-11 is tightly connected with first
171-12, the first adapter 171-2 is connected with the first cover body 171-12, and the first adapter 171-2 is connected plane 171-11 with first to be put down
OK.The outer wall of the second head cavity 172-1 includes the second connection plane 172-11 and is connected plane 172-11 with second and is tightly connected
The second cover body 172-12, the second adapter 172-2 is connected with the second cover body 172-12, and the second adapter 172-2 is connected flat with second
Face 172-11 is parallel.The two ends of capillary tube 173 are connected to the first connection plane 171-11 and the second connection plane 172-11
On.The carrier gas being mixed with sample particle cloud is entering the first adapter with the second bye-pass 130 after the 3rd on-off valve 143
171-2, then flows in the first head cavity 171-1.Because the first adapter 171-2 is parallel with the first connection plane 171-11, now
The carrier gas being mixed with sample particle cloud is injected in the inner surface of the first cover body 171-12, thus turbulization is so that sample particle
Cloud and carrier gas are mixed.Then the carrier gas being mixed with sample particle cloud is divided into multiple tributaries entrance capillary tubies 173.In capillary tube
In 173, the sample particle cloud in each tributary and carrier gas are mixed again, subsequently into the second head cavity 172-1.Due to second
Adapter 172-2 connects, with second, the carrier gas being mixed with sample particle cloud that plane 172-11 is parallel, now flows out from capillary tube 173
It is injected in the inner surface of the second cover body 172-12, thus turbulization is so that sample particle cloud and carrier gas are mixed further,
Then pass through the second adapter 172-2 again to flow out.So, improve the mixing uniformity of sample particle cloud and carrier gas.
It should be noted that the first adapter 171-2 and first parallel, the second adapter 172-2 and that connects plane 171-11
Two connection planes 172-11 are parallel, are not necessarily referring to absolute parallel between the two.Somewhat being mutually inclined between the two is also to go,
As long as not just to the first connection plane 171-11, the outlet of the second adapter 172-2 is not just to second for the outlet of the first adapter 171-2
Connect plane 172-11.
In order to improve the mixing uniformity of sample particle cloud and carrier gas further, in the present embodiment, can also be to capillary
The length of pipe 173 is configured, and makes the length of multiple capillary tubies 173 different.So, the tributary in each capillary tube 173 is not
Enter the second head cavity 172-1 with the time, thus producing stronger turbulent flow in the second head cavity 172-1, thus carrying further
The high mixing uniformity of sample particle cloud and carrier gas.
Referring again to Fig. 2, in order to avoid the sample particle cloud in sample room 147 to leak further, can also be in injection port
Sealing ring 147-4 is arranged on the inwall of 147-2 and outlet 147-3, to reduce sample carrier bar 151 and injection port 147-2, to go out sample
Gap between mouth 147-3.
Sample can be fixed on sample carrier bar 151 using various ways.In the present embodiment, on sample carrier bar 151
Open up multiple sample receiving holes 154, sample receiving hole 154 is evenly arranged on the length direction of sample carrier bar 151.Sample is accepted
Hole 154 is blind hole.Operationally, sample is placed in sample receiving hole 154, thus being fixed.
It should be noted that in the present embodiment, the work ginseng such as pressure in surge tank 145, carrier gas flux, dwell time
Number is merely to illustrate that the operation principle exemplifications set out of laser ablation sampling system 100.In other specific embodiments
In, different running parameters can be adopted according to practical situation.
Also, it should be noted sample room 147 is overall in the present embodiment is in spindle, be in order to avoid in carrier gas by sample
Product particle cloud takes away and produces backflow during sample room 147 such that it is able to more completely by sample particle cloud bar from sample room 147.?
In other specific embodiments, sample room 147 can also be the shape such as square or circular.
Embodiment 2:
With reference to Fig. 4, Fig. 4 is another kind of structural representation of laser ablation sampling system 100 in this utility model embodiment.
A kind of laser ablation sampling system 100 that the present embodiment also provides for, it increased vacuum pump 180 He on the basis of embodiment 1
Three-way valve 190.
Three-way valve 190 possesses first interface 191, second interface 192 and the 3rd interface 193.3rd interface 193 and second
The end of pipeline 130 connects, and first interface 191 is connected with vacuum pump 180.
Work process is as follows:
Multiple samples are fixed on sample carrier bar 151, sample is evenly distributed on the length direction of sample carrier bar 151.
Close the second on-off valve 142, the 3rd on-off valve 143 and the 4th on-off valve 144, open the first on-off valve 141.From master
Carrier gas (noble gases, such as helium) is sent at the top of pipeline 110, and carrier gas enters surge tank 145, makes the pressure in surge tank 145
Power is maintained at 0.2-0.3mpa.Open the second on-off valve 142, the 3rd on-off valve 143 and the 4th on-off valve 144.Adjustment three-way valve
190, so that second interface 192 is connected with the 3rd interface 193.The first bye-pass 120 and second are passed through in carrier gas in surge tank 145
Pipeline 130 empties, thus being carried out to the whole pipeline of laser ablation sampling system 100.Close the first on-off valve 141 and
Two on-off valves 142.Adjustment three-way valve 190, makes first interface 191 connect with the 3rd interface 193.Start vacuum pump 180, to laser
Degrade the pipeline evacuation of sampling system 100.Then, mass spectrograph 200 is connected with second interface 192.Adjustment three-way valve 190,
Second interface 192 is made to connect with the 3rd interface 193.Close the 3rd on-off valve 143.
Driving means drive sample carrier bar 151 to slide, and make a sample on sample carrier bar 151 enter sample room 147.From
Carrier gas is sent at the top of main line 110, and carrier gas enters surge tank 145, exocoel 146 and sample room 147.Keep surge tank 145
In pressure position 0.2-0.3mpa.Pressurize 5-10min, makes the pressure in exocoel 146 and sample room 147 basically identical.
Close the first on-off valve 141, the sample in sample room 147 is carried out with laser ablation, obtain sample particle cloud.Open
3rd on-off valve 143, the sample particle cloud bar in sample room 147 from sample room 147, is delivered to matter by the carrier gas in surge tank 145
Spectrometer 200 is analyzed.After the completion of analysis, close the 3rd on-off valve 143.
Constantly repeat the above steps, you can laser ablation and analysis are carried out to each sample on sample carrier bar 151.
After the laser ablation of complete paired samples and analysis, close the 4th on-off valve 144, open the second on-off valve 142 He
3rd on-off valve 143, the gas in the pipeline of emptying laser ablation sampling system 100.Then adjust three-way valve 190, make first
Interface 191 connects with the 3rd interface 193, closes the second on-off valve 142, using vacuum pump 180 to laser ablation sampling system 100
Pipeline evacuated.
In the present embodiment, achieve the cleaning of the pipeline to laser ablation sampling system 100 by vacuum pump 180, make
Without disassembly, cleaning before and after industry, improve work efficiency.
The foregoing is only section Example of the present utility model, be not limited to this utility model, for this
For skilled person, this utility model can have various modifications and variations.All of the present utility model spirit and principle it
Interior, any modification, equivalent substitution and improvement made etc., should be included within protection domain of the present utility model.
Claims (10)
1. laser ablation sampling system it is characterised in that:
Including the main line, the first bye-pass and the second bye-pass that possess top and end；The top of described first bye-pass with
The end of described main line connects, and the top of described second bye-pass is connected with the end of described main line；
The first on-off valve that described laser ablation sampling system also includes being successively set on described main line from top to end,
Surge tank and the 4th on-off valve；
Described laser ablation sampling system also includes the exocoel being successively set on described first bye-pass from top to end
With the second on-off valve；
Described laser ablation sampling system also includes the sample room being successively set on described second bye-pass from top to end
With the 3rd on-off valve；
It is indoor that described sample room is located at described exocoel；Relative injection port and outlet are offered on described sample room；
Described laser ablation sampling system also includes being arranged on the indoor sample conveying device of described exocoel, and described sample conveying device includes leading to
Cross described injection port and described outlet slidably extends through the sample carrier bar of described sample room, and with described sample carrier bar even
Connect and be used for the driving means driving described sample carrier bar to slide on described injection port and straight line residing for described outlet.
2. laser ablation sampling system according to claim 1 it is characterised in that:
Described laser ablation sampling system also includes first pressure meter, second pressure meter and the 3rd piezometer；
Described first pressure meter is arranged in described main line, and is located between described first on-off valve and described surge tank；Institute
State second pressure meter to be arranged in described first bye-pass, and be located between described exocoel and described second on-off valve；Described
3rd piezometer is arranged in described second bye-pass, and is located between described sample room and described 3rd on-off valve.
3. laser ablation sampling system according to claim 1 it is characterised in that:
Described laser ablation sampling system also includes effusion meter, and described effusion meter is arranged in described second bye-pass, described stream
Gauge is located between top and the described sample room of described second bye-pass.
4. laser ablation sampling system according to claim 1 it is characterised in that:
Described laser ablation sampling system also includes three-way valve and vacuum pump；Described three-way valve possesses first interface, second interface
With the 3rd interface, described 3rd interface is connected with the end of described second bye-pass, and described first interface is with described vacuum pump even
Connect.
5. the laser ablation sampling system according to any one in Claims 1 to 4 it is characterised in that:
Described laser ablation sampling system also includes signal homogenizer, and described signal homogenizer is arranged at described second bye-pass
In, described signal homogenizer is located between described 3rd on-off valve and the end of described second bye-pass.
6. laser ablation sampling system according to claim 5 it is characterised in that:
Described signal homogenizer includes first end, the second end and many and connects described first end and described the second end
Capillary tube；
Described first end and described the second end are connected in described second bye-pass.
7. laser ablation sampling system according to claim 6 it is characterised in that:
Described first end includes the first head cavity being interconnected and the first adapter；Described the second end includes being interconnected
Two head cavitys and the second adapter；Described capillary tube connects described first head cavity and described second head cavity；Described first takes over and described
Second adapter is connected in described second bye-pass.
8. laser ablation sampling system according to claim 7 it is characterised in that:
The first cover body that the outer wall of described first head cavity includes the first connection plane and is connected flat seal connection with first, institute
State the first adapter to be connected with described first cover body, described first adapter is parallel with the described first connection plane；
The second cover body that the outer wall of described second head cavity includes the second connection plane and is connected flat seal connection with second, institute
State the second adapter to be connected with described second cover body, described second adapter is parallel with the described second connection plane；
The two ends of described capillary tube are connected to described first and connect in plane and described second connection plane.
9. the laser ablation sampling system according to any one in claim 6～8 it is characterised in that:
The length of multiple described capillary tubies is different.
10. the laser ablation sampling system according to any one in Claims 1 to 4 it is characterised in that:
Sample receiving hole is offered on described sample carrier bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620744854.5U CN205910045U (en) | 2016-07-15 | 2016-07-15 | Laser ablation sampling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620744854.5U CN205910045U (en) | 2016-07-15 | 2016-07-15 | Laser ablation sampling system |
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| Publication Number | Publication Date |
|---|---|
| CN205910045U true CN205910045U (en) | 2017-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620744854.5U Expired - Fee Related CN205910045U (en) | 2016-07-15 | 2016-07-15 | Laser ablation sampling system |
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| CN (1) | CN205910045U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954089A (en) * | 2016-07-15 | 2016-09-21 | 中国工程物理研究院材料研究所 | Laser ablation sample feeding system |
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2016
- 2016-07-15 CN CN201620744854.5U patent/CN205910045U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954089A (en) * | 2016-07-15 | 2016-09-21 | 中国工程物理研究院材料研究所 | Laser ablation sample feeding system |
| CN105954089B (en) * | 2016-07-15 | 2018-12-21 | 中国工程物理研究院材料研究所 | Laser ablation sampling system |
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Granted publication date: 20170125 Termination date: 20170715 |