CN101126685A - Sampling apparatus - Google Patents
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- CN101126685A CN101126685A CNA2007101093906A CN200710109390A CN101126685A CN 101126685 A CN101126685 A CN 101126685A CN A2007101093906 A CNA2007101093906 A CN A2007101093906A CN 200710109390 A CN200710109390 A CN 200710109390A CN 101126685 A CN101126685 A CN 101126685A
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Abstract
The utility model provides a sampling device, which comprises a first sampling cavity and a second sampling cavity. The first sampling cavity acquires the samples of high-pressure gaseous substances under test and then the first sampling cavity, the second sampling cavity and a low-pressure environment are communicated to enable the high-pressure gaseous substances under test to expand naturally into the second sampling cavity, or even be discharged into the low-pressure environment. Thereby the gaseous substances under test of the second sampling cavity is arranged in a low-pressure environment and finally sent to the analytical device in order to avoid the damages to the analytical device due to high-voltage shock.
Description
[technical field]
The present invention relates to a kind of sampling apparatus, especially relevant a kind of can be the sampling apparatus of high-pressure gaseous sample of material step-down.
[background technology]
Gas chromatographic analysis device (gas chromatography is called for short GC) is to utilize chromatographic column that the various compositions in the gaseous material to be measured are separated, and detects the content of described each composition simultaneously, has analysis precision height, the slow characteristics of analysis speed.For existing material in the standard spectrogram, can learn to comprise which composition in the test substance by the reference standard spectrogram, for the material that does not have in the standard spectrogram, then need to utilize mass spectrometer (mass spectrography is called for short MS) to do further to analyze.
Gas chromatographic analysis device is responsive to impacting with high pressure (unexpected pressure rises or descends) and flowing fluid ratio; impacting with high pressure and liquid may damage expensive gas chromatographic analysis device; if there is not the corresponding protection device; just can't directly (generally speaking the pressure ratio of carrier gas be less to high pressure; therefore; the high-pressure gaseous material can produce impacting with high pressure to GC) and the gaseous material stream that contains the material (such as water) that under uniform temperature and pressure (such as normal temperature and pressure), is in a liquid state analyze, make the range of application of equipment be subjected to great restriction.
Therefore, need a kind of sampling apparatus of design, can carry out step-down to the high-pressure gaseous material with protection species analysis device.
[summary of the invention]
An aspect of of the present present invention provides a kind of sampling apparatus, comprises first sampling cavity and second sampling cavity, and it comprises three duties: in first duty, first sampling cavity is communicated with gaseous material to be measured source, makes gaseous material to be measured be full of first sampling cavity; In second duty, second sampling cavity is communicated with first sampling cavity and an environment under low pressure simultaneously, make the gaseous material to be measured in first sampling cavity be expanded to second sampling cavity naturally, even discharge described environment under low pressure, the gaseous material to be measured that is retained at last in first sampling cavity and second sampling cavity is a low pressure; In the 3rd duty, first sampling cavity or second sampling cavity are communicated with one second a gaseous material source and a gaseous material analytical equipment simultaneously, utilize the gaseous material in the second gaseous material source that the gaseous material to be measured in first sampling cavity or second sampling cavity is blown into described gaseous material analytical equipment.
Described environment under low pressure is the approaching space of pressure and the described second gaseous material source, so can reduce the compression shock to the gaseous material analytical equipment.
In the 3rd duty, the gaseous material to be measured in first sampling cavity and second sampling cavity is low pressure, thus optional both one of send into described gaseous material analytical equipment and analyze.Though, not disclosing this pipeline in the specific embodiment of the invention and connect setting, this is that the industry those skilled in the art can expect under enlightenment of the present invention.
In addition, a plurality of sampling cavities can also be set, high pressure gaseous material to be measured in described first sampling cavity is expanded to wherein, and the low pressure gaseous material of getting then in any one sampling cavity wherein to be measured is sent into described gaseous material analytical equipment, and this is also within covering scope of the present invention.
Further, in described the 3rd duty, second sampling cavity is communicated with described second gaseous material source and described gaseous material analytical equipment simultaneously.
Wherein, the pressure in described gaseous material to be measured source is greater than the pressure of described environment under low pressure, further, can guarantee that the gaseous material to be measured in first sampling cavity can be expanded to and be full of second sampling cavity naturally by the volume of adjusting first sampling cavity, second sampling cavity and connecting line between the two.
Further, in first duty, first sampling cavity is while and gas sampling system connectivity also.
Further, in first duty, second sampling cavity is communicated with described second gaseous material source and described environment under low pressure simultaneously.
Further, in second duty, first sampling cavity only directly is communicated with second sampling cavity.
Further, in the 3rd duty, first sampling cavity is communicated with described second gaseous material source and described environment under low pressure simultaneously.
Further, be a circulation from first duty to the second duty to the, three duties, carry out second when taking turns sampling analysis, switch to first duty from described the 3rd duty again.
Further, described first sampling cavity and described second sampling cavity can be any type of sampling cavities, such as ring pipe, corrugated tube etc.
Further, in described first duty and second duty, the input port of described gaseous material analytical equipment is communicated with the described second gaseous material source.
Further, the described second gaseous material source can be any gas source of analyzing the low pressure of gaseous material to be measured with described gaseous material analytical equipment that do not influence, and such as inert gas source, further, can be nitrogen, argon gas, helium etc.
Further, can utilize transfer valve to realize the switching of duty.
Further, please join Fig. 1 to Fig. 3, utilize the switching of the combination realization duty of transfer valve 52, transfer valve 53 and stop valve.
52 of the structure of transfer valve 53 and transfer valves are same, are provided with first port 531, second port 532, the 3rd port 533, the 4th port 534, five-port 535 and the 6th port 536.Transfer valve 53 is under first strobe state, and first port 531 is communicated with second port 532, and the 3rd port 533 is communicated with the 4th port 534, and five-port 535 is communicated with the 6th port 536; Under second strobe state, first port 531 is communicated with the 6th port 536, and second port 532 is communicated with the 3rd port 533, and the 4th port 534 is communicated with five-port 535.
In one embodiment, the duty of described sampling apparatus is determined by the combination of the state of the strobe state of described transfer valve and stop valve.
When described transfer valve 52 is operated in first strobe state, transfer valve 53 is operated in first strobe state, and stop valve 55 is in opening, and described sampling apparatus is operated in first duty.The five-port 525 and the 6th port 526 of first port 521 of described high pressure gaseous material process to be measured transfer valve 52, second port 522, first sampling cavity 520, transfer valve 52 enter the gas sampling system, wherein, the pressure of described gas sampling system and the pressure in described high pressure gaseous material to be measured source are roughly the same, after after a while, residual gaseous material in first sampling cavity 520 is discharged to the gas sampling system, is full of high pressure gaseous material to be measured in first sampling cavity 520.The five-port 535 and the 6th port 536 of first port 531 of the 3rd port 523 of inert gas process transfer valve 52, the 4th port 524, transfer valve 53, second port 532, second sampling cavity 530, transfer valve 53 enter described environment under low pressure, and the residual gaseous materials in second sampling cavity 530 are expelled to described environment under low pressure.Inert gas enters described gaseous material analytical equipment through the 3rd port 533 and the 4th port 534 of transfer valve 53, discharges the residual gas in the described gaseous material analytical equipment.
Keep described transfer valve 52 in second strobe state, switch transfer valve 53 to second strobe state, open stop valve 55, described sampling apparatus is operated in the 3rd duty.Described high pressure gaseous material to be measured enters the gas sampling system through first port 521 and the 6th port 526 of transfer valve 52.First port 53 1 and the 6th port 536 of the five-port 525 of the 3rd port 523 of inert gas process transfer valve 52, second port 522, first sampling cavity 520, transfer valve 52, the 4th port 524, transfer valve 53 enter described environment under low pressure, and the gaseous materials residual to be measured in first sampling cavity 520 are expelled to described environment under low pressure.The five-port 535 and the 4th port 534 of the 3rd port 533 of inert gas process transfer valve 53, second port 532, second sampling cavity 530, transfer valve 53 enter described gaseous material analytical equipment, the low pressure gaseous materials to be measured in second sampling cavity 530 are expelled to described gaseous material analytical equipment analyze.
Described sampling apparatus is a complete circulation from first duty to the second duty to the, three duties, when described gaseous material analytical equipment is finished analysis, switch transfer valve 52 to first strobe state, switch transfer valve 53 to first strobe state, remain off valve 55 is in opening, described sampling apparatus just switches to first duty from the 3rd duty, carries out second and takes turns sampling analysis.At this moment, the five-port 535 and the 6th port 536 of first port 531 of the 3rd port 523 of inert gas process transfer valve 52, the 4th port 524, transfer valve 53, second port 532, second sampling cavity 530, transfer valve 53 enter described environment under low pressure, and the residual gaseous materials in second sampling cavity 530 are expelled to described environment under low pressure.Inert gas enters described gaseous material analytical equipment through the 3rd port 533 and the 4th port 534 of transfer valve 53, discharges the residual gas in the described gaseous material analytical equipment.
Further, can with the described environment under low pressure place of connection a non-return valve be set, prevent that the foreign gas in the described environment under low pressure from flowing into the 6th port 536 at transfer valve 53 the 6th port 536.
Further, except transfer valve, can also utilize the combination of other valves and pipeline to realize the switching of duty, this is following thinkable in inspiration of the present invention by the industry those skilled in the art, no longer gives unnecessary details for example one by one.
An aspect of of the present present invention provides a kind of gaseous material method of sampling, may further comprise the steps:
The first step utilizes first sampling cavity to gather high pressure gaseous material to be measured;
Second goes on foot, and is communicated with first sampling cavity and an environment under low pressure by second sampling cavity, keeps a period of time, makes the high pressure gaseous material to be measured in first sampling cavity be expanded in second sampling cavity naturally and the pressure of approaching described environment under low pressure;
The 3rd goes on foot, and is communicated with the injection port of second sampling cavity and one second gaseous material source and described gaseous material analytical equipment, utilizes the second gaseous material source that the gaseous material to be measured in second sampling cavity is blown into described gaseous material analytical equipment.
Further, in the described first step, second sampling cavity also is communicated with described environment under low pressure simultaneously and the described second gaseous material source is communicated with, and utilizes the second gaseous material source that the residuals in second sampling cavity is discharged.
Further, in described the 3rd step, first sampling cavity is communicated with the second gaseous material source and described environment under low pressure simultaneously.
An aspect of of the present present invention provides a kind of scavenge unit, be used to protect the gaseous material analytical equipment, prevent that the higher material of solidifying point from entering the gaseous material analytical equipment it is damaged, comprise adapter cavity, condensing unit and heating arrangement, under condensing state, adapter cavity is communicated with the injection port of gaseous material to be measured source and described gaseous material analytical equipment, condensing unit work, heater stop work freezes solidly on adapter cavity to the lower material of solidifying point in the described gaseous material to be measured; Under heated condition, adapter cavity one end is communicated with the second gaseous material source, and the other end is communicated with the gas sampling system, condensing unit quits work, heating arrangement work makes the described gasification substance that freezes solidly on adapter cavity, utilizes the second gaseous material source that it is expelled to the gas sampling system.
Further, please join Fig. 4, described condensing unit comprises condensing agent input port 732, condensing agent delivery outlet 733 and condensation chamber (not shown), condensing agent is 732 inputs from the condensing agent input port, through condensation chamber,, take away heat from 733 outputs of condensing agent delivery outlet, reduce the temperature in scavenge unit 73 adapter cavities 731, some material through adapter cavity 731 is solidified.
Further, described heating arrangement is an electric heater unit 734.
Further, described scavenge unit can with described sampling apparatus coupling.The 4th port of transfer valve 52 is communicated with the input port of adapter cavity, and the delivery outlet of adapter cavity is communicated with first port of transfer valve 53.
Please join Fig. 2, when sampling apparatus works in second duty, scavenge unit is in condensing state, condensing agent is 732 inputs from the condensing agent input port, through condensation chamber, from 733 outputs of condensing agent delivery outlet, reduce the adapter cavity temperature, the higher material of solidifying point in the gaseous material to be measured that enters second sampling cavity from first sampling cavity is freezed solidly on adapter cavity 731.
As long as one of first duty of sampling apparatus and the 3rd duty, scavenge unit works in heated condition, can and utilize the second gaseous material source that it is blown out to the gas sampling system the gasification of the residue in the adapter cavity 731.
Certainly, above all combinations need make the sample of adapter cavity 731 in first sampling cavity of scavenge unit drop to uniform temperature before entering second sampling cavity.
Further, can be designed to complicated shape to adapter cavity 731, be beneficial to fully contacting of material and adapter cavity 731, thereby be beneficial to condensation or heating, such as waveform, labyrinth-like etc.
Further, described sampling apparatus can be used for the high flux reactor assembly, and the product in each reactor of high flux reactor assembly is taken turns sampling analysis.
Further, the material of making each parts of described sampling apparatus includes but not limited to stainless steel, copper, alloy etc., recommends to adopt stainless steel.
Further, described sampling apparatus is not only applicable to the analytical equipment to the impacting with high pressure sensitivity, is equally applicable to the analytical equipment to the high pressure sensitivity.
[description of drawings]
Fig. 1 is first working state figure of sampling apparatus of the present invention.
Fig. 2 is second working state figure of sampling apparatus of the present invention.
Fig. 3 is the 3rd working state figure of sampling apparatus of the present invention.
Fig. 4 is the structural drawing of scavenge unit of the present invention.
[preferred embodiment]
In the present embodiment, realize the switching of the duty of described sampling apparatus with two transfer valves and stop valve.
Please join Fig. 1, transfer valve 52 is provided with first port 521, second port 522, the 3rd port 523, the 4th port 524, five-port 525 and the 6th port 526.Transfer valve 52 has two strobe state, and under first strobe state, first port 521 is communicated with second port 522, and the 3rd port 523 is communicated with the 4th port 524, and five-port 525 is communicated with the 6th port 526; Please join Fig. 2, under second strobe state, first port 521 is communicated with the 6th port 526, and second port 522 is communicated with the 3rd port 523, and the 4th port 524 is communicated with five-port 525.
The 4th port 514 of sluice valve 51 is communicated with first port 521 of transfer valve 52, and the gaseous material that one of described 32 reaction tubes are discharged is introduced analytic system.Pull out a branch road to quadrupole mass spectroscope 71 with kapillary 711 on the pipeline between the 4th port 514 of sluice valve 51 and first port 521 of transfer valve 52, the sub-fraction of the gaseous material of being discharged by the reaction tube of gating is introduced quadrupole mass spectroscope 71, quadrupole mass spectroscope 71 was analyzed described gaseous material by the time interval that configures.
Please join Fig. 1, transfer valve 53 is provided with first port 531, second port 532, the 3rd port 533, the 4th port 534, five-port 535 and the 6th port 536.Transfer valve 53 has two strobe state, and under first strobe state, first port 531 is communicated with second port 532, and the 3rd port 533 is communicated with the 4th port 534, and five-port 535 is communicated with the 6th port 536; Please join Fig. 3, under second strobe state, first port 531 is communicated with the 6th port 536, and second port 532 is communicated with the 3rd port 533, and the 4th port 534 is communicated with five-port 535.
Fluid distributor 16 is communicated with fluid distributor 15, like this, the gaseous material that 128 reaction tubes of present embodiment parallel reactor system are discharged gathers output the most at last in fluid distributor 15, be disposed to gas sampling system (not shown) through pressure controller 61.Pressure controller 61 is by the pressure of pilot-gas outlet end, guarantees that being reflected under the predetermined pressure in each reaction tube carry out.Need to prove, can adopt a fluid distributor with sufficient amount port to replace the combination of fluid distributor 16 and fluid distributor 15.
Please join Fig. 4, scavenge unit 73 comprises adapter cavity 731; Condensing agent inlet 732 and condensing agent outlet 733, be used for the input and output condensing agent, gaseous material to be analyzed was lowered the temperature before entering chromatographic analysis device, will prevent that high temperature and liquid from damaging instrument wherein at normal temperatures and pressures for liquid composition freezes solidly on adapter cavity 731 simultaneously; Heating arrangement 734 is used to heat adapter cavity, make described freeze solidly on wherein at normal temperatures and pressures for liquid composition gasification, feed inert gas then these compositions be expelled to atmosphere.
Please join Fig. 1, transfer valve 52 is operated under first strobe state, transfer valve 53 is operated under first strobe state, at this moment, by first port 521, second port 522, first sampling cavity 520, five-port 525 and six port 526 of the gaseous material of a reaction tube discharge of gating via transfer valve 52, export fluid distributor 16 to, after after a while, will be full of described gaseous material of being discharged in first sampling cavity 520 by the reaction tube of gating.The 3rd port 523 of one road inert gas process transfer valve 52, the 4th port 524, the adapter cavity 731 of scavenge unit 73, first port 531, second port 532, second sampling cavity 530, five-port 535 and the 6th port 536 of transfer valve 53 purge second sampling cavity 530 clean; Another road inert gas enters stratographic analysis group device through the 3rd port 533 and the 4th port 534 of transfer valve 53, plays the effect of cleaning chromatographic analysis device.
Please join Fig. 2, when being full of described gaseous material of being discharged by the reaction tube of gating in first sampling cavity 520, close stop valve 55, switch transfer valve 52 to second strobe state, transfer valve 53 still is operated in first strobe state.At this moment, first sampling cavity 520 is communicated with second sampling cavity 530, because the pressure in second sampling cavity 530 is normal pressure, high temperature and high pressure gas in first sampling cavity 520 expands naturally, enter second sampling cavity 530 after adapter cavity 731 coolings through scavenge unit 73, be solidified in adapter cavity 731 through the higher material of a part of solidifying point in the gaseous material to be measured of described adapter cavity 731.First port 521 and the 6th port 526 by the gaseous material process transfer valve 52 of the reaction tube of gating discharge enter fluid distributor 16.This state is kept one specific period, make first sampling cavity 520 and second sampling cavity 530 reach normal pressure or near behind the normal pressure, switch transfer valve 53 to second strobe state, transfer valve 52 still keeps second strobe state, open stop valve 55, as shown in Figure 3.
Please join Fig. 3, be entered fluid distributor 16 by first port 521 and the 6th port 526 of the gaseous material process transfer valve 52 of the reaction tube of gating discharge.Heating arrangement 734 heating adapter cavities 731, with the described gasification substance that freezes solidly on adapter cavity 731, first port 531 and the 6th port 536 of the 3rd port 523 of one road inert gas process transfer valve 52, second port 522, first sampling cavity 520, five-port 525, the 4th port 524, adapter cavity 731, transfer valve 53, discharging behind the described gasification substance that freezes solidly on adapter cavity 731, to reach the cleaning purpose.Another road inert gas enters chromatographic analysis device analysis to the gaseous material in second sampling cavity 530 through the 3rd port 533, second port 532, second sampling cavity 530, five-port 535 and the 4th port 534 of transfer valve 53.
From Fig. 1 to Fig. 3 is a sampling analysis circulation.
Claims (23)
1. a sampling apparatus comprises first sampling cavity, it is characterized in that: it also comprises second sampling cavity, and described sampling apparatus comprises three duties, and in first duty, first sampling cavity is communicated with gaseous material to be measured source; In second duty, second sampling cavity is communicated with first sampling cavity and an environment under low pressure simultaneously; In the 3rd duty, first sampling cavity or second sampling cavity are communicated with one second a gaseous material source and a gaseous material analytical equipment simultaneously.
2. sampling apparatus as claimed in claim 1 is characterized in that, in described the 3rd duty, described second sampling cavity is communicated with one second a gaseous material source and a gaseous material analytical equipment simultaneously.
3. sampling apparatus as claimed in claim 2 is characterized in that, in first duty, first sampling cavity is while and gas sampling system connectivity also.
4. sampling apparatus as claimed in claim 2 is characterized in that, in first duty, second sampling cavity is communicated with described second gaseous material source and described environment under low pressure simultaneously.
5. sampling apparatus as claimed in claim 2 is characterized in that, in second duty, first sampling cavity is communicated with by second sampling cavity and described environment under low pressure.
6. sampling apparatus as claimed in claim 2 is characterized in that, in the 3rd duty, first sampling cavity is communicated with described second gaseous material source and described environment under low pressure simultaneously.
7. sampling apparatus as claimed in claim 2 is characterized in that, in described first duty and second duty, the input port of described gaseous material analytical equipment is communicated with the described second gaseous material source.
8. sampling apparatus as claimed in claim 2 is characterized in that, is a circulation from first duty to the second duty to the, three duties, carries out second when taking turns sampling analysis, switches to first duty from described the 3rd duty again.
9. sampling apparatus as claimed in claim 1 is characterized in that, described first sampling cavity and second sampling cavity can ring pipe or corrugated tubes.
10. sampling apparatus as claimed in claim 1 is characterized in that, the described second gaseous material source can be the gaseous material that any analysis to gaseous material to be measured does not have influence.
11. sampling apparatus as claimed in claim 10 is characterized in that, the described second gaseous material source can be nitrogen, argon gas, helium gas source.
12. sampling apparatus as claimed in claim 2 is characterized in that, utilizes the switching of the combination realization duty of first transfer valve and second transfer valve and stop valve:
First transfer valve and second transfer valve are equipped with first port, second port, the 3rd port, the 4th port, five-port and the 6th port;
Described first to the 6th port switchably is communicated with adjacent two ports;
First port of first transfer valve is communicated with gaseous material to be measured source, second port of first transfer valve is communicated with first sampling cavity, the 3rd port of first transfer valve is communicated with the second gaseous material source, be provided with stop valve between the two, the 4th port of first transfer valve is communicated with first port of second sluice valve, the five-port of first transfer valve is communicated with first sampling cavity, the 6th port of first transfer valve and gas sampling system connectivity;
Second port of second transfer valve is communicated with second sampling cavity, the 3rd port of second transfer valve is communicated with the second gaseous material source, the 4th port of second transfer valve is communicated with the injection port of gaseous material analytical equipment, the five-port of second transfer valve is communicated with second sampling cavity, and the 6th port of second transfer valve is communicated with described environment under low pressure.
13. sampling apparatus as claimed in claim 12 is characterized in that, first transfer valve and second transfer valve all have two strobe state, under first strobe state, first port is communicated with second port, and the 3rd port is communicated with the 4th port, and five-port is communicated with the 6th port; Under second strobe state, first port is communicated with the 6th port, and second port is communicated with the 3rd port, and the 4th port is communicated with five-port.
14. sampling apparatus as claimed in claim 13 is characterized in that, when described first transfer valve is in first strobe state, second transfer valve is in first strobe state, and stop valve is in opening, and described sampling apparatus is operated in first duty; Switch described first transfer valve to the second strobe state, keep described second transfer valve to be in first strobe state, switch described stop valve to closed condition, described sampling apparatus switches to second duty from first duty; Keep described first transfer valve to be in second strobe state, switch described second transfer valve to the second strobe state, switch described stop valve to opening, described sampling apparatus switches to the 3rd duty from second as state; Switch described first transfer valve to the first strobe state, switch described second transfer valve to the first strobe state, keep described stop valve to be in opening, described sampling apparatus switches to first duty from the 3rd duty.
15. sampling apparatus as claimed in claim 2, it is characterized in that, it also comprises the material scavenge unit, this material scavenge unit comprises adapter cavity, condensing unit and heating arrangement, under sampling apparatus second duty, the adapter cavity of this material scavenge unit is communicated with first sampling cavity and second sampling cavity, and condensing unit is in running order, heating arrangement is in closed condition, by the higher material condensation of congealing point in the gaseous material to be measured of adapter cavity in adapter cavity.
16. sampling apparatus as claimed in claim 15 is characterized in that, described scavenge unit has following duty combination:
When sampling apparatus is operated under the 3rd duty, condensing unit cuts out, heating arrangement work, and when sampling apparatus is operated under first duty, heating arrangement cuts out;
Perhaps be operated under the 3rd duty when sampling apparatus, heating arrangement cuts out, and when sampling apparatus is operated under first duty, condensing unit cuts out, heating arrangement work.
17. sampling apparatus as claimed in claim 15, it is characterized in that, described condensing unit comprises condensing agent input port, condensing agent delivery outlet and condensation chamber, condensing agent is imported from the condensing agent input port, through condensation chamber, from the output of condensing agent delivery outlet, reduce the temperature of described adapter cavity, make the higher material condensation of congealing point through described adapter cavity.
18. sampling apparatus as claimed in claim 15 is characterized in that, described heating arrangement is an electric heater unit.
19. high-pressure gaseous material method of sampling, utilize sampling apparatus in the high-pressure gaseous substance source, to gather sample, and described high-pressure gaseous sample of material carried out sending into analytical equipment after the step-down, described sampling apparatus comprises first sampling cavity and second sampling cavity, and the described high-pressure gaseous material method of sampling may further comprise the steps:
The first step utilizes first sampling cavity to gather described high-pressure gaseous sample of material;
Second step was communicated with second sampling cavity and an environment under low pressure and described second sampling cavity, and kept a period of time, made the high-pressure gaseous sample of material in first sampling cavity be expanded to described second sampling cavity naturally until the pressure near described environment under low pressure;
In the 3rd step, low pressure gaseous state sample of material interior first sampling cavity or that second sampling cavity is interior is sent into described analytical equipment.
20. the high-pressure gaseous material method of sampling as claimed in claim 19 is characterized in that, in described the 3rd step, is that carrier gas is sent described low pressure gaseous state sample of material into described analytical equipment with one second gaseous material source.
21. a sampling apparatus comprises first sampling cavity, it is characterized in that, it also comprises second sampling cavity, first transfer valve, second transfer valve and stop valve;
First sampling cavity and second sampling cavity are equipped with first port and second port;
First transfer valve and second transfer valve are equipped with first port, second port, the 3rd port, the 4th port, five-port and the 6th port;
First to the 6th port of described first transfer valve and second transfer valve switchably is communicated with adjacent two ports;
First port of first transfer valve is communicated with gaseous material to be measured source, second port of first transfer valve is communicated with first port of first sampling cavity, the 3rd port of first transfer valve is communicated with the second gaseous material source, be provided with stop valve between the two, the 4th port of first transfer valve is communicated with first port of second sluice valve, the five-port of first transfer valve is communicated with second port of first sampling cavity, the 6th port of first transfer valve and a gas sampling system connectivity;
Second port of second transfer valve is communicated with first port of second sampling cavity, the 3rd port of second transfer valve is communicated with the second gaseous material source, the 4th port of second transfer valve is communicated with the injection port of gaseous material analytical equipment, the five-port of second transfer valve is communicated with second sampling cavity, second port, and the 6th port of second transfer valve is communicated with described environment under low pressure.
22. sampling apparatus as claimed in claim 21 is characterized in that, first transfer valve and second transfer valve all have two strobe state, under first strobe state, first port is communicated with second port, and the 3rd port is communicated with the 4th port, and five-port is communicated with the 6th port; Under second strobe state, first port is communicated with the 6th port, and second port is communicated with the 3rd port, and the 4th port is communicated with five-port.
23. sampling apparatus as claimed in claim 21, it is characterized in that, it also comprises the material scavenge unit, this material scavenge unit comprises adapter cavity, is used for condensation by the condensing unit of the material of described adapter cavity and the heating arrangement that is used to make the material distillation of condensation in described adapter cavity, and the 4th port of first transfer valve is communicated with first port of second transfer valve of second transfer valve by described adapter cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101093906A CN101126685A (en) | 2006-05-29 | 2007-05-29 | Sampling apparatus |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610085162 | 2006-05-29 | ||
| CN200610085162.5 | 2006-05-29 | ||
| CNA2007101093906A CN101126685A (en) | 2006-05-29 | 2007-05-29 | Sampling apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101126685A true CN101126685A (en) | 2008-02-20 |
Family
ID=39094765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101093906A Pending CN101126685A (en) | 2006-05-29 | 2007-05-29 | Sampling apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN101126685A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634621A (en) * | 2015-02-15 | 2015-05-20 | 中国石油大学(北京) | High-pressure trace gas sampling analyzer |
| CN108139303A (en) * | 2015-09-30 | 2018-06-08 | 史密斯探测-沃特福特有限公司 | For the device and method of sampling |
-
2007
- 2007-05-29 CN CNA2007101093906A patent/CN101126685A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634621A (en) * | 2015-02-15 | 2015-05-20 | 中国石油大学(北京) | High-pressure trace gas sampling analyzer |
| CN108139303A (en) * | 2015-09-30 | 2018-06-08 | 史密斯探测-沃特福特有限公司 | For the device and method of sampling |
| US11585735B2 (en) | 2015-09-30 | 2023-02-21 | Smiths Detection-Watford Limited | Detector with detector inlet for sampling gaseous fluid |
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