CN205910046U - Laser ablation sample room - Google Patents
Laser ablation sample room Download PDFInfo
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- CN205910046U CN205910046U CN201620745236.2U CN201620745236U CN205910046U CN 205910046 U CN205910046 U CN 205910046U CN 201620745236 U CN201620745236 U CN 201620745236U CN 205910046 U CN205910046 U CN 205910046U
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- inner cavity
- cavity chamber
- sample room
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Abstract
The utility model discloses a laser ablation sample room, including interior cavity, outer cavity and sample sending device, interior cavity possesses first air inlet and first gas outlet, has offered the introduction port on the interior cavity and has gone out the appearance mouth, sample sending device includes through the introduction port and goes out the sample holder strip that appearance mouthful slidable ground runs through interior cavity 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, interior cavity and sample sending device all set up at the exocoel indoorly, and outer cavity possesses second air inlet and second gas outlet. This laser ablation sample room has realized the automatic of sample and has 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 the laser ablation sampling system. Simultaneously, eliminated the indoor outer pressure differential of inner chamber, avoided because the poor sample granule cloud that leads to of the indoor external pressure of inner chamber leaks.
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 pretreating device of gas ions is and in particular to sample room in 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 sample room, it can be automatically fed into sample, frequently need not open sample room, thus avoiding in laser ablation sampling system
Gas circuit impacts.
Embodiment of the present utility model is achieved through the following technical solutions:
Laser ablation sample room, including inner cavity chamber, exocoel and sample conveying device；Inner cavity chamber possesses the first air inlet and first
Gas outlet, inner cavity chamber offers injection port and outlet；Sample conveying device includes slidably passing through by injection port and outlet
Wear the sample carrier bar of inner cavity chamber, and be connected with sample carrier bar and be used for driving sample carrier bar straight residing for injection port and outlet
The driving means slided on line；It is indoor that inner cavity chamber and sample conveying device are arranged at exocoel, and exocoel possesses the second air inlet and the
Two gas outlets.
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 inner cavity chamber.Inner cavity chamber is carried out after laser ablation to this sample, drives dress
Put drive sample carrier bar motion, make another untreated sample enter inner cavity chamber.And so on, you can realize the automatic of sample
Change, need not frequently open sample room, thus avoiding because frequent sample room of opening is to the gas circuit in laser ablation sampling system
Impact.
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
Outlet leaks to inner chamber outdoor, leads to carrier gas cannot take away sample particle cloud completely.Inventor finds through research why
The indoor sample particle cloud of inner chamber is revealed easily by injection port and outlet, is the inner chamber due to after producing sample particle cloud
The indoor intrinsic pressure pressure outdoor more than inner chamber, leads to sample particle cloud to leak in the presence of inner cavity chamber's external and internal pressure difference.
For this reason, inventor is provided with the exocoel accommodating inner cavity chamber.When laser ablation is carried out to sample, enter by first
QI KOU sends into carrier gas to inner cavity chamber, pass through the second air inlet simultaneously and send into carrier gas to exocoel, makes exocoel and inner chamber indoor
Pressure is consistent.Eliminate the pressure differential inside and outside inner cavity chamber.The sample leading to due to inner cavity chamber's external and internal pressure difference so can be avoided
Grain cloud leakage.
In a kind of embodiment of the present utility model, the wall of inner cavity chamber includes columnar interlude, from the one of interlude
Hold the First Transition section of the circular arc with parabolic outlines extended, from what the other end of interlude extended, there is parabolic
Second changeover portion of the circular arc of line profile；Interlude, First Transition section and the second changeover portion are coaxial；
First air inlet is opened in First Transition section, and the first gas outlet is opened in the second changeover portion；Interlude, First Transition
Section, the second changeover portion, the first gas outlet and the first air inlet are coaxial.
In a kind of embodiment of the present utility model, injection port and outlet are opened in the second changeover portion；Injection port and going out
The plane symmetry that sample mouth is located with respect to the axis of the second changeover portion.
In a kind of embodiment of the present utility model, First Transition section is identical with the second changeover portion shape.
In a kind of embodiment of the present utility model, inner cavity chamber offers the first laser window just to sample carrier bar, the
One laser window is by the first glass capsulation.
In a kind of embodiment of the present utility model, exocoel offers the second laser window just to first laser window,
Second laser window is by the second glass capsulation.
In a kind of embodiment of the present utility model, sample carrier bar offers multiple sample receiving holes.
In a kind of embodiment of the present utility model, sample receiving hole arranged for interval in the glide direction of sample carrier bar.
In a kind of embodiment of the present utility model, laser ablation sample room also includes being arranged in injection port and outlet
The sealing ring of wall.
In a kind of embodiment of the present utility model, driving means include slide rail, power output portion and with sample carrier bar
The sliding shoe that two ends in glide direction connect；Groove is offered on slide rail, sliding shoe is slidably matched with groove；Power output portion and cunning
Motion block is in transmission connection.
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 accommodates the exocoel of inner cavity chamber, to sample
When product carry out laser ablation, carrier gas is sent into inner cavity chamber by the first air inlet, is sent to exocoel by the second air inlet simultaneously
Enter carrier gas, make the exocoel pressure indoor with inner chamber consistent.Eliminate the pressure differential inside and outside inner cavity chamber.So can avoid due to interior
The sample particle cloud leakage that chamber external and internal pressure difference 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 sample room in this utility model embodiment；
Fig. 2 is enlarged drawing at a of Fig. 1；
Fig. 3 is the external structure schematic diagram of inner cavity chamber in this utility model embodiment；
Fig. 4 is the external structure schematic diagram of exocoel in this utility model embodiment；
Fig. 5 is the structural representation of laser ablation sampling system in this utility model embodiment；
Fig. 6 is the structural representation of signal homogenizer 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, 151- first pressure
Meter, 152- second pressure meter, 153- the 3rd piezometer, 154- effusion meter, 155- air relief valve, 160- signal homogenizer, 161- the
One end, 161-1- first head cavity, 161-11- first connects plane, 161-12- first cover body, and 161-2- first takes over, 162-
The second end, 162-1- second head cavity, 162-11- second connects plane, 162-12- second cover body, and 162-2- second takes over,
163- capillary tube, 200- laser ablation sample room, 210- inner cavity chamber, 210-1- first laser window, 210-2- first glass, 211-
First air inlet, 212- first gas outlet, 213- injection port, 214- outlet, 215- sealing ring, 216- interlude, 217-
One changeover portion, 218- second changeover portion, 220- exocoel, 220-1- second laser window, 220-2- second glass, 221- second enters
QI KOU, 222- second gas outlet, 230- sample conveying device, 231- sample carrier bar, 231-1- sample receiving hole, 232- driving means,
232-1- slide rail, 232-2- sliding shoe, 232-3- groove.
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 sample room 200 in this utility model embodiment.Laser ablation
Sample room 200 includes inner cavity chamber 210, exocoel 220 and sample conveying device 230.
In conjunction with Fig. 1 and with reference to Fig. 2, Fig. 2 is enlarged drawing at a of Fig. 1.Inner cavity chamber 210 possesses the first air inlet 211 and first
Gas outlet 212, inner cavity chamber 210 offers injection port 213 and outlet 214.Sample conveying device 230 is included by injection port 213
Slidably extend through the sample carrier bar 231 of inner cavity chamber 210 with outlet 214, and be connected with sample carrier bar 231 and be used for driving
The driving means 232 that sample carrier bar 231 slides on injection port 213 and straight line residing for outlet 214.
Inner cavity chamber 210 and sample conveying device 230 are arranged in exocoel 220, and exocoel 220 possesses the second air inlet 221
With the second gas outlet 222.
In order to avoid frequently opening laser ablation sample room 200 in operation process, in the present embodiment, inventor is arranged
Possesses the sample conveying device 230 of sample carrier bar 231 and driving means 232.Multiple samples are undertaken on sample carrier bar 231, drives
Device 232 drives sample carrier bar 231 to move, and makes the sample on sample carrier bar 231 enter inner cavity chamber 210.Right in inner cavity chamber 210
After this sample carries out laser ablation, driving means 232 drive sample carrier bar 231 to move, and so that another untreated sample is entered
Inner cavity chamber 210.And so on, you can realize the automatic replacing of sample, laser ablation sample room 200 need not frequently be opened, thus
Avoid and because of frequent laser ablation sample room 200 of opening, the gas circuit in laser ablation sampling system is impacted.
However, inventor finds during realizing the present embodiment, due to sample carrier bar 231 and injection port 213, go out sample
Relative motion can be produced between mouthfuls 214, therefore, it is difficult between sample carrier bar 231 and injection port 213, sample carrier bar 231 with go out
Realize between sample mouth 214 fully sealing, after sample being carried out with laser ablation and obtains sample particle cloud, sample particle cloud is easily
Leaked to outside inner cavity chamber 210 by injection port 213 and outlet 214, lead to carrier gas cannot take away sample particle cloud completely.Invention
People finds through research, and why the sample particle cloud in inner cavity chamber 210 is revealed easily by injection port 213 and outlet 214,
Due to after producing sample particle cloud, intrinsic pressure in inner cavity chamber 210 more than inner cavity chamber 210 outside pressure, in inner cavity chamber 210
Sample particle cloud is led to leak in the presence of external pressure difference.
For this reason, inventor is provided with the exocoel 220 accommodating inner cavity chamber 210.When laser ablation is carried out to sample, pass through
First air inlet 211 sends into carrier gas to inner cavity chamber 210, passes through the second air inlet 221 simultaneously and sends into carrier gas to exocoel 220, makes
Exocoel 220 is consistent with the pressure in inner cavity chamber 210.Eliminate the pressure differential inside and outside inner cavity chamber 210.So can avoid due to interior
The sample particle cloud leakage that chamber 210 external and internal pressure difference leads to.
In the present embodiment, sample carrier bar 231 is strip plate.Sample carrier bar 231 passes through injection port 213 and outlet
214 slidably extend through inner cavity chamber 210.Driving means 232 include slide rail 232-1, and with sample carrier bar 231 length direction on
Two ends connect sliding shoe 232-2.Groove 232-3 is offered on slide rail 232-1, sliding shoe 232-1 is slidably disposed on groove
In 232-3.Driving means 232 also include in figure unshowned power output portion, for driving sliding shoe 232-1 in groove 232-3
Middle slip, thus drive sample carrier bar 231 to slide on injection port 213 and straight line residing for outlet 214.Power output portion is permissible
The device of sliding shoe 232-1 linear motion can be driven using hydraulic cylinder, pneumatic cylinder, linear electric motors, screw pair etc..
It should be noted that in other specific embodiments, driving means can be only with direct and sample carrier bar 231
The devices such as the hydraulic cylinder of connection, pneumatic cylinder, linear electric motors, screw pair, as long as sample carrier bar 231 can be driven in injection port
213 and straight line residing for outlet 214 on slide.
Sample can be fixed on sample carrier bar 231 using various ways.In the present embodiment, on sample carrier bar 231
Open up multiple sample receiving hole 231-1, sample receiving hole 231-1 is equidistantly spaced cloth on the length direction of sample carrier bar 231
Put.Sample receiving hole 231-1 is blind hole.Operationally, sample is placed in sample receiving hole 231-1, thus being fixed.Need
Bright, in other specific embodiments, sample receiving hole 231-1 can also adopt stepped hole, or possesses the through hole of step,
Sample is accepted by step.The length direction that the arrangement form of sample receiving hole 231-1 is also not necessarily limited in sample carrier bar 231 is first-class
Spacing arranged for interval.
In order to avoid the sample particle cloud in inner cavity chamber 210 to leak further, in the present embodiment, can also be in injection port
213 and outlet 214 inwall on sealing ring 215 is set, with reduce sample carrier bar 231 and injection port 213 and outlet 214 it
Between gap.
The shape of inner cavity chamber 210 can arbitrarily be arranged.In existing laser ablation sampling system, for accommodating the chamber of sample
Room, being shaped as of its inner space be spherical, cube shaped or two ends are taper, middle for cube shaped combination.But
Inventor finds through research, is used for accommodating the chamber of sample, carrier gas is from chamber in existing laser ablation sampling system
When import enters chamber, due to being increased dramatically of space, easily turbulization, lead to the carrier gas cannot be disposably by the sample of within the chamber
Product particle cloud is taken away, and most of sample particle cloud is trapped within the chamber, thus affecting accuracy of detection.It is two ends for inner space
For taper, the middle chamber for cube shaped combination although cone space can alleviate space to a certain extent drastically increases
Big situation, but the straight chamber inner wall limiting cone space still can lead to stronger turbulent flow to produce.
For this reason, in the present embodiment, inner cavity chamber 210 adopts following shape, to improve the problems referred to above.With reference to Fig. 3, Fig. 3 is
The external structure schematic diagram of inner cavity chamber in this utility model embodiment.The wall of inner cavity chamber 210 includes columnar interlude 216,
The First Transition section 217 of the circular arc with parabolic outlines extended from one end of interlude 216, from interlude 216
What the other end extended has the second changeover portion 218 of the circular arc of parabolic outlines.Interlude 216, First Transition section 217 and
Second changeover portion 218 is coaxial.First Transition section 217 and the second changeover portion 218 are of similar shape, and with respect to interlude
216 centrosymmetry setting.
First air inlet 211 is opened in First Transition section 217, and the first gas outlet 212 is opened in the second changeover portion 218.In
Between section 216, First Transition section 217, the second changeover portion 218, the first gas outlet 212 and the first air inlet 211 coaxial.
The wall of inner cavity chamber 210 is using the First Transition section 217 with parabolic outlines and the second changeover portion 218.On the one hand,
Carrier gas after the first air inlet 211 enters inner cavity chamber 210, the spatially slowly increase that First Transition section 217 limits, then carrier gas enters
Enter interlude 216.After interlude 216 flows into the second changeover portion 218, what the second changeover portion 218 limited spatially slowly subtracts for carrier gas
Little, until carrier gas is flowed out from the first gas outlet 212.So alleviate space and the situation that lead to carrier gas turbulization is increased dramatically.
On the other hand, there is the First Transition section 217 of parabolic outlines and the space of the second changeover portion 218 restriction with respect to taper sky
Between, carrier gas turbulization can be avoided to a greater extent.So so that carrier gas can be by the most samples in inner cavity chamber 210
Product particle cloud is disposably taken away, and reduces sample particle cloud and is trapped in the amount in inner cavity chamber 210.
In order to reduce the amount that sample particle cloud is trapped in inner cavity chamber 210 further, in the present embodiment, can also will enter
Sample mouth 213 and outlet 214 are opened in the second changeover portion 218.Injection port 213 and outlet 214 are with respect to the second changeover portion 218
Axis be located a plane symmetry.Sample is located on sample carrier bar 231, and sample carrier bar 231 passes through injection port 213 and goes out
Sample mouth 214 runs through inner cavity chamber 210, and operationally, sample is located in the space that the second changeover portion 218 limits.By laser ablation
The sample particle cloud producing is largely focused in the space of the second changeover portion 218 restriction, near the first gas outlet 212, thus
Enable from the first air inlet 211 carrier gas more easily by sample particle cloud bar from inner cavity chamber 210, reduce further
Sample particle cloud is trapped in the amount in inner cavity chamber 210.
Sample in inner cavity chamber 210, the laser ablation that sent by generating device of laser.Generating device of laser can directly set
Put in inner cavity chamber 210.
Certainly, generating device of laser can also be arranged in exocoel 220, at this time, it may be necessary to open up in inner cavity chamber 210
One laser window 210-1, first laser window 210-1 is sealed by the first glass 210-2.First laser window 210-1 is just to sample carrier bar
231.The laser that generating device of laser sends is injected in inner cavity chamber 210 through the first glass 210-2, holds on sample carrier bar 231
The sample carrying is degraded.
With reference to Fig. 4, Fig. 4 is the external structure schematic diagram of inner cavity chamber in this utility model embodiment.Generating device of laser
The outside of laser ablation sample room 200 can be arranged on.Now need second laser window 220-1 is opened up on exocoel 220, the
Dual-laser window 220-1 is sealed by the second glass 220-2.Second laser window 220-1 is just to first laser window 210-1.Laser occurs
The laser that device sends by injecting in inner cavity chamber 210 through after the second glass 220-2, first laser window 210-1, to sample carrier
The sample carrying on bar 231 is degraded.
In order that the work that those skilled in the art are more clearly understood from laser ablation sample room 200 in the present embodiment is former
Reason, illustrates to the laser ablation sampling system 100 possessing laser ablation sample room 200 below.
With reference to Fig. 5, Fig. 5 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
220 and second on-off valve 142.Second air inlet 221 of exocoel 220 and the second gas outlet 222 and the first bye-pass 120 are even
Connect.Laser ablation sampling system 100 also includes setting successively from the top of the second bye-pass 130 to the end of the second bye-pass 130
Put the inner cavity chamber 210 in the second bye-pass 130 and the 3rd on-off valve 143.Inner cavity chamber 210 is located in exocoel 220, inner cavity chamber
210 the first air inlet 211 and the first gas outlet 212 are connected with the second bye-pass 130.3rd on-off valve 143 is located at exocoel
Outside 220.
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.
The operation principle of laser ablation sampling system 100 is as follows:
Multiple samples are fixed on sample carrier bar 231, sample is evenly distributed on the length direction of sample carrier bar 231.
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, in surge tank 145
Carrier gas pass through the first bye-pass 120 and the second bye-pass 130 and empty, thus the whole pipe to laser ablation sampling system 100
Road is carried out.Close the second on-off valve 142 and the 3rd on-off valve 143.By the end of the second bye-pass 130 and mass spectrograph 300
Connect.
Driving means 232 drive sample carrier bar 231 to slide, and make a sample on sample carrier bar 231 enter inner cavity chamber
210.Send into carrier gas from the top of main line 110, carrier gas enters surge tank 145, exocoel 220 and inner cavity chamber 210.Keep buffering
Pressure position 0.2-0.3mpa in tank 145.Pressurize 5-10min, makes the pressure in exocoel 220 and inner cavity chamber 210 basically identical.
Close the first on-off valve 141, the sample in inner cavity chamber 210 is carried out with laser ablation, obtain sample particle cloud.Open
3rd on-off valve 143, the sample particle cloud bar in inner cavity chamber 210 from inner cavity chamber 210, is delivered to matter by the carrier gas in surge tank 145
Spectrometer 300 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 231.
By sample conveying device 230, you can realize the automatic replacing of sample, need not frequently open laser ablation sample room 200,
Thus avoid impacting to the gas circuit in laser ablation sampling system 100 because of frequent laser ablation sample room 200 of opening.
In laser ablation sampling system 100 work process, need to check surge tank 145, exocoel 220 and inner cavity chamber
Pressure in 210.Pressure can be realized by setting pressure transducer in surge tank 145, exocoel 220 and inner cavity chamber 210
Detection.In the present embodiment, pressure is realized by first pressure meter 151, second pressure meter 152 and the 3rd piezometer 153
Detection.First pressure meter 151 meter is arranged in main line 110, and is located between the first on-off valve 141 and surge tank 145.First
Piezometer 151 is used for detecting the pressure in surge tank 145.Second pressure meter 152 is arranged in the first bye-pass 120, and is located at
Between exocoel 220 and the second on-off valve 142.Second pressure meter 152 is used for detecting the pressure in exocoel 220.3rd pressure
Meter 153 is arranged in the second bye-pass 130, and is located between inner cavity chamber 210 and the 3rd on-off valve 143.3rd piezometer 153
Outside exocoel 220, for detecting the pressure in inner cavity chamber 210.
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
155, air relief valve 155 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 inner cavity chamber 210
Secondary property take away inner cavity chamber 210, need to be controlled to entering the carrier gas flux in inner cavity chamber 210.For this reason, stream can also be arranged
Gauge 154.Effusion meter 154 is arranged in the second bye-pass 130, and effusion meter 154 is located at top and the inner chamber of the second bye-pass 130
Between room 210.Effusion meter 154 is located at outside exocoel 220.In the course of the work, laser stripping is carried out to the sample in inner cavity chamber 210
After losing and obtain sample particle cloud, open the 3rd on-off valve 143, the carrier gas in surge tank 145 is entered inner cavity chamber by effusion meter 154
210 flow-control is in 0.6l/min.So, the sample particle cloud in inner cavity chamber 210 is disposably taken away inner cavity chamber by carrier gas
210, deliver to mass spectrograph 300 and be analyzed.
Carrier gas by the sample particle cloud bar in inner cavity chamber 210 from inner cavity chamber 210 and during entering mass spectrograph 300,
There may be between carrier gas and sample particle cloud cannot mixed uniformly situation, this will lead to enter mass spectrograph 300 sample
Grain cannot be uniformly distributed, and affects testing result.For this reason, in the present embodiment, signal homogenizer 160 can also be set.Signal is even
Change device 160 to be arranged in the second bye-pass 130, signal homogenizer 160 is located at the 3rd on-off valve 143 and the second bye-pass 130
Between end.Signal homogenizer 160 is used for making carrier gas uniformly mix with sample particle cloud, so that entering mass spectrograph 300
Sample particle is uniformly distributed.
In the present embodiment, signal homogenizer 160 adopts following structure.With reference to Fig. 6, Fig. 6 is this utility model embodiment
The structural representation of middle signal homogenizer 160.Signal homogenizer 160 includes first end 161, the second end 162 and many
Connection first end 161 and the capillary tube 163 of the second end 162；First end 161 and the second end 162 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 161, enters the second end 162 after then passing through capillary tube 163 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 161 includes the first head cavity 161-1 being interconnected and the first adapter 161-2.The
Two ends 162 include the second head cavity 162-1 being interconnected and the second adapter 162-2.Capillary tube 163 connects the first head cavity 161-
1 and the second head cavity 162-1.First adapter 161-2 and the second adapter 162-2 is connected in the second bye-pass 130.First head cavity
The outer wall of 161-1 includes the first connection plane 161-11 and is connected the first cover body that plane 161-11 is tightly connected with first
161-12, the first adapter 161-2 is connected with the first cover body 161-12, and the first adapter 161-2 is connected plane 161-11 with first to be put down
OK.The outer wall of the second head cavity 162-1 includes the second connection plane 162-11 and is connected plane 162-11 with second and is tightly connected
The second cover body 162-12, the second adapter 162-2 is connected with the second cover body 162-12, and the second adapter 162-2 is connected flat with second
Face 162-11 is parallel.The two ends of capillary tube 163 are connected to the first connection plane 161-11 and the second connection plane 162-11
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
161-2, then flows in the first head cavity 161-1.Because the first adapter 161-2 is parallel with the first connection plane 161-11, now
The carrier gas being mixed with sample particle cloud is injected in the inner surface of the first cover body 161-12, 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 163.In capillary tube
In 163, the sample particle cloud in each tributary and carrier gas are mixed again, subsequently into the second head cavity 162-1.Due to second
Adapter 162-2 connects, with second, the carrier gas being mixed with sample particle cloud that plane 162-11 is parallel, now flows out from capillary tube 163
It is injected in the inner surface of the second cover body 162-12, thus turbulization is so that sample particle cloud and carrier gas are mixed further,
Then pass through the second adapter 162-2 again to flow out.So, improve the mixing uniformity of sample particle cloud and carrier gas.
It should be noted that the first adapter 161-2 and first parallel, the second adapter 162-2 and that connects plane 161-11
Two connection planes 162-11 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 161-11, the outlet of the second adapter 162-2 is not just to second for the outlet of the first adapter 161-2
Connect plane 162-11.
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 163 is configured, and makes the length of multiple capillary tubies 163 different.So, the tributary in each capillary tube 163 is not
Enter the second head cavity 162-1 with the time, thus producing stronger turbulent flow in the second head cavity 162-1, thus carrying further
The high mixing uniformity of sample particle cloud and carrier gas.
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.
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 sample room it is characterised in that:
Described laser ablation sample room includes inner cavity chamber, exocoel and sample conveying device；
Described inner cavity chamber possesses the first air inlet and the first gas outlet, and described inner cavity chamber offers injection port and outlet；Institute
State sample conveying device to include slidably extending through the sample carrier bar of described inner cavity chamber by described injection port and described outlet, and
It is connected with described sample carrier bar and is used for drive described sample carrier bar sliding on described injection port and straight line residing for described outlet
Dynamic driving means；
It is indoor that described inner cavity chamber and described sample conveying device are arranged at described exocoel, and described exocoel possesses the second air inlet and the
Two gas outlets.
2. laser ablation sample room according to claim 1 it is characterised in that:
The wall of described inner cavity chamber includes columnar interlude, has parabolic outlines from what one end of described interlude was extended
Circular arc First Transition section, the second of the circular arc with parabolic outlines extended from the other end of described interlude
Changeover portion；Described interlude, First Transition section and the second changeover portion are coaxial；
Described first air inlet is opened in described First Transition section, and described first gas outlet is opened in described second changeover portion；
Described interlude, described First Transition section, described second changeover portion, described first gas outlet and described first air inlet are same
Axle.
3. laser ablation sample room according to claim 2 it is characterised in that:
Described injection port and described outlet are opened in described second changeover portion；Described injection port and described outlet are with respect to institute
State the plane symmetry that the axis of the second changeover portion is located.
4. laser ablation sample room according to claim 2 it is characterised in that:
Described First Transition section is identical with described second changeover portion shape.
5. laser ablation sample room according to claim 1 it is characterised in that:
First laser window just to described sample carrier bar is offered on described inner cavity chamber, described first laser window is close by the first glass
Envelope.
6. laser ablation sample room according to claim 5 it is characterised in that:
Second laser window just to described first laser window is offered on described exocoel, described second laser window is by the second glass
Sealing.
7. the laser ablation sample room according to any one in claim 1～6 it is characterised in that:
Multiple sample receiving holes are offered on described sample carrier bar.
8. laser ablation sample room according to claim 7 it is characterised in that:
Described sample receiving hole arranged for interval in the glide direction of described sample carrier bar.
9. the laser ablation sample room according to any one in claim 1～6 it is characterised in that:
Described laser ablation sample room also includes being arranged on the sealing ring of described injection port and described outlet inwall.
10. the laser ablation sample room according to any one in claim 1～6 it is characterised in that:
Described driving means include slide rail, power output portion and the cunning being connected with the two ends in described sample carrier bar glide direction
Motion block；
Groove is offered, described sliding shoe is slidably matched with described groove on described slide rail；Described power output portion and described sliding shoe
It is in transmission connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620745236.2U CN205910046U (en) | 2016-07-15 | 2016-07-15 | Laser ablation sample room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620745236.2U CN205910046U (en) | 2016-07-15 | 2016-07-15 | Laser ablation sample room |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205910046U true CN205910046U (en) | 2017-01-25 |
Family
ID=57805357
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620745236.2U Expired - Fee Related CN205910046U (en) | 2016-07-15 | 2016-07-15 | Laser ablation sample room |
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| Country | Link |
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| CN (1) | CN205910046U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954088A (en) * | 2016-07-15 | 2016-09-21 | 中国工程物理研究院材料研究所 | Laser ablation sample chamber |
| CN110361336A (en) * | 2019-07-19 | 2019-10-22 | 浙江大学 | Efficiently go out sample sample room for microwave plasma torch laser ablation system |
-
2016
- 2016-07-15 CN CN201620745236.2U patent/CN205910046U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954088A (en) * | 2016-07-15 | 2016-09-21 | 中国工程物理研究院材料研究所 | Laser ablation sample chamber |
| CN105954088B (en) * | 2016-07-15 | 2019-02-05 | 中国工程物理研究院材料研究所 | Laser ablation sample room |
| CN110361336A (en) * | 2019-07-19 | 2019-10-22 | 浙江大学 | Efficiently go out sample sample room for microwave plasma torch laser ablation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170125 Termination date: 20170715 |