CN107976552A - The universal sampling device and general sample injection method of gaseous hydrocarbon and liquefied petroleum gas - Google Patents
The universal sampling device and general sample injection method of gaseous hydrocarbon and liquefied petroleum gas Download PDFInfo
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- CN107976552A CN107976552A CN201610934513.9A CN201610934513A CN107976552A CN 107976552 A CN107976552 A CN 107976552A CN 201610934513 A CN201610934513 A CN 201610934513A CN 107976552 A CN107976552 A CN 107976552A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
Abstract
The present invention provides the universal sampling device and general sample injection method of a kind of gaseous hydrocarbon and liquefied petroleum gas.The gaseous hydrocarbon of the present invention and the universal sampling device of liquefied petroleum gas, including：Sample injection port (1), sample flow control valve (2), sample evaporation chamber (3), gas pressure reducer (4), passage converting member (5), gasometry ring (6), carrier gas inlet (7), carrier gas flux meter (8), air exit (9), counterbalance valve (10), analyzer entrance (11), heating control module (12).Apparatus and method of the present invention can realize the accurate quantitative analysis of sample, in the end of quantitative loop, increased counterbalance valve can ensure the stability and accuracy of pressure in quantitative loop, insulation plus temperature control, pipeline to quantitative loop and Passivation Treatment at the same time, it is ensured that the uniformity of each sample size.Apparatus of the present invention can realize the accurate quantitative analysis of sample by improving system pressure, with the difficult sample product of measure or trace samplings.
Description
Technical field
The present invention relates to a kind of gaseous state or the sampling device of liquefied hydrocarbon sample, more particularly to a kind of gaseous hydrocarbon and liquefaction stone
The sampling device of oil gas.
Background technology
With the development of petro chemical industry, liquefied petroleum gas has been cured as a kind of chemical industry base stock and New-type fuel
It is valued by people to be cured.LPG refers to the oil gas through high pressure or low-temperature liquefaction, referred to as " liquefied petroleum gas " or " liquefaction
Gas ".Its composition is propane, normal butane, iso-butane and a small amount of ethane, the organic compound more than carbon 5, unsaturated hydrocarbons etc..LPG
Have the characteristics that inflammable and explosive property, gasification property, expanded by heating, corrosivity.LPG is usually from oil gas field, oil plant or second
Obtained in alkene factory oil gas.LPG compared with other fuel, have pollution less, caloric value is high, be easy to transport, store simple, supply
The advantages that flexible.
The composition of liquefied petroleum gas and the measure of sulfur content, are highly important indexs for liquefied petroleum gas, by liquid
Liquefied oil gas introduces analysis and detecting instrument, it is necessary to assure the uniformity of liquefied petroleum gas sample introduction, representativeness simultaneously carry out accurately it
Quantitative, the measure of composition and sulfur content to liquefied gas is important precondition.
0230 liquefied petroleum gas composition measuring methods of SH/T, ASTM D6667 liquefied petroleum gas sulphur content determination Ultraluminescences
Method, 0222 liquefied petroleum gas total sulfur content determination methods of SH/T.Its above-mentioned detection method has in detail the sample introduction of liquefied petroleum gas
Discussion.But result reflection of most refineries to the sulphur content determination of the composition of liquefied petroleum gas and liquefied petroleum gas is very big, examination
That tests is repeated very poor, especially sulphur content determination when, comparing, many units can differences go out 50%, or even an order of magnitude,
Analysis personnel are too poor to the data self-distrust of oneself, repeatability, reproducibility data.Through substantial amounts of investigation and data verification, liquid
Liquefied oil gas forms and sulfur content, the mainly sampling system problem of Water content determination precision difference：Gasifying liquefied petroleum gas is not
Completely, condensed again after quantitative inaccurate, gasification, the sample introduction problem such as gasification pipeline absorption is liquefied petroleum gas data result weight
The main reason for renaturation is poor.
0230 liquefied petroleum gas composition measuring methods of SH/T, 0222 liquefied petroleum gas total sulfur content determination methods of SH/T are wherein all
It is the gasification that liquefied petroleum gas is realized by water-bath, water-bath is difficult to make to be stored in component gasification of the liquefied gas mid-boiling point higher than 100 DEG C,
And do not referred in standard gasification after how sample introduction, refinery uses sample introduction needle sample introduction mostly in practical operation, if but sample introduction needle
Syringe tension may then cause the actual sampling pressure of gas to be more than 1 atmospheric pressure, make test result bigger than normal, if syringe is excessively loose,
Then cause gas leakage, test result is less than normal.Meanwhile the it is difficult to ensure that multiplicity of sample introduction.
ASTM D6667 liquefied petroleum gas sulphur content determination ultraviolet fluorescence methods, the liquefied petroleum gas in standard use liquid
Valve, gas trap sampling system sample introduction, there is provided two sets of sampling systems.According to the literature, gas is taken with airbag, stored, in 2h
Sulfur content will decay 20%, 4h decay nearly 50%, therefore directly use gas valve injection it is difficult to ensure that data are authentic and valid.Liquid
Body valve injection, quantify while to ensure that bubble is not present into liquid quantitative loop part in institute, and observation tube is devised in standard, avoids gas
Bubble is to quantitatively impacting, but practical operation is difficult to accomplish, the sample size deficiency of sample, the inadequate bubble of pressure is difficult to be discharged,
Therefore sample introduction data redundancy is poor, it is difficult to accurate quantitative analysis.
For in the market liquefied gas sulfur content and the variety of problems of composition measuring, the present invention combines Liquid sample introduction and gas is determined
The advantage of amount, there is provided it is a kind of that the fully sampling device and method of gasification and accurate quantitative analysis can be carried out to liquefied petroleum gas, can
Realize the stabilization sample introduction of liquefied petroleum gas and gaseous sample, solve petrochemical industry liquefied petroleum gas and gaseous hydrocarbon sulfur content and group
Into the important problem for waiting measure repeatability and repeatability difference.
The content of the invention
The present invention provides the universal sampling device and general sample injection method of a kind of gaseous hydrocarbon and liquefied petroleum gas.
The gaseous hydrocarbon of the present invention and the universal sampling device of liquefied petroleum gas, including：Sample injection port 1, sample flow tune
Save valve 2, sample evaporation chamber 3, gas pressure reducer 4, passage converting member 5, gasometry ring 6, carrier gas inlet 7, carrier gas flux meter
8th, air exit 9, counterbalance valve 10, analyzer entrance 11, heating control module 12, the sample injection port 1 and sample flow tune
Section valve 2, sample evaporation chamber 3, gas pressure reducer 4, passage converting member 5 are sequentially connected, and the gasometry ring 6 is changed with passage
Component 5 be connected, the carrier gas inlet 7 is sequentially connected with carrier gas flux meter 8, passage converting member 5, the analyzer entrance 11 and
Passage converting member 5 is connected, and the passage converting member 5 is sequentially connected with counterbalance valve 10, air exit 9, the computer heating control
Module 12 is used for the temperature for controlling each component.
The passage converting member 5 includes sample feeding passage 51, Measurement channel 52, sample intake passage 51 during sample feeding
It is connected with quantitative loop 6, counterbalance valve 10, air exit 9；Measurement channel 52 and quantitative loop 6,11 phase of analyzer entrance when sample measures
Even.
The sample injection port 1 is preferably provided with filter to prevent impurity blocking pipeline；
The temperature of the sample evaporation chamber 3 is controlled by the heating control module 12, preferable temperature range for room temperature extremely
150℃；
The gas pressure reducer 4 can depressurize the sample after gasification；
The 5 preferred multiple-way valve of passage converting member, such as six-way valve, eight ways valve, ten-way valve, ten two-port valves can be selected
Or ten four-way valves, wherein ten multiple-way valves passed to can realize the switching of two or more different volumes quantitative loops, so as to select
Different sample sizes.
The passage converting member 5,6 preferred metal material of gasometry ring；
The passage converting member 5, the inner surface of gasometry ring 6 preferably carry sulfur passivation coating；
The passage converting member 5 can be automatically controlled or manual control, it is possible to achieve sample intake passage and Measurement channel
Conversion；
Preferred 1mL~the 10mL of volume of the gasometry ring 6；The number of the gasometry ring 6 can be one or
It is multiple；
The carrier gas inlet 7 is preferably provided with filter to prevent impurity blocking pipeline；
The carrier gas flux meter 8 can accurately control the flow of carrier gas；
The counterbalance valve 10 can carry out the control of pressure in quantitative loop together with gas pressure reducer 4.Gas pressure reducer 4 is right
Sample after gasification is depressurized, and more accurate pressure control can be realized with control piper pressure by adjusting counterbalance valve 10.
The heating control module 12 can control the temperature of all parts respectively, can be with Control Assay vaporizer 3, passage
The temperature of converting member 5, gasometry ring 6 and pipeline；To the temperature of passage converting member 5, gasometry ring 6 and pipeline control
Preferably 40 DEG C to 80 DEG C of scope.
The universal sampling device of currently preferred gaseous hydrocarbon and liquefied petroleum gas is on the basis of above device, is being tried
Filter is added between sample injection port 1 and sample flow control valve 2, the passivated place of its material preferably polytetrafluoroethylene or surface
The metal of reason, the effect of the pot strainer are to prevent solid particulate matter from entering blocking pipeline or vaporizer in system.
The most preferably universal sampling device of gaseous hydrocarbon and liquefied petroleum gas of the invention is on the basis of above-mentioned preferred embodiment
On, visual transparent pipe is provided between the sample flow control valve 2 and sample evaporation chamber 3, the visual transparent pipe helps
In observation sample, it is ensured that the not bubbles into the fluid sample of vaporizer, can greatly improve Liquid sample introduction repeatability and
Accuracy.
Present invention also offers a kind of general sample introduction that gaseous hydrocarbon and liquefied petroleum gas are carried out using above-mentioned sampling device
Method.
The gaseous hydrocarbon of the present invention and the general sample injection method of liquefied petroleum gas, including：1) set passage converting member 5 be into
Original mold formula, sample enter from injection port 1, by flow control valve 2, are gasified by vaporizer 3, gas pressure reducer 4 carries out
Decompression, then quantitative loop 6 is entered by the sample intake passage 51 of passage converting member 5；2) passage converting member 5 is set as measurement mould
Formula, enters quantitative loop 6 by Measurement channel 52 of the carrier gas that carrier gas inlet 7 is passed through through carrier gas flux meter 8, passage converting member 5, carries
Gas goes to measure operation together with the sample in quantitative loop 6 into analyzer entrance 11.
The test sample of this method can be gaseous hydrocarbon or liquefied petroleum gas.
Apparatus and method of the present invention can realize the accurate quantitative analysis of sample, in the increased counterbalance valve energy in the end of quantitative loop
Enough ensure the stability and accuracy of pressure in quantitative loop, while add at the insulation and passivation to the temperature control, pipeline of quantitative loop
Reason, it is ensured that the uniformity of each sample size.Apparatus of the present invention can realize the accurate of sample by improving system pressure
It is quantitative, with the difficult sample product of measure or trace samplings.
Apparatus and method of the present invention can be adapted for the sample introduction of two kinds of phase samples of air-liquid, and can directly pass through gas
Body standard specimen carries out the formulation of standard curve, and the stability occurred when avoiding using liquid standard specimen is poor, lack of homogeneity and standard liquid are difficult
The problem of to prepare, substantially increase the accuracy of measurement result.
The device of the invention and method realize the different sample sizes of sample, nothing by the control to system and quantitative ring compression
Quantitative loop is needed to change, sample introduction is accurate, reproducible, easy to use, overcomes present in existing detection method and sampling device
Liquid quantitative is not allowed, the gasification of LPG samples is incomplete, low content sulphur is easy to be adsorbed by sampling device and led to not detection, height
Boiling point sulphur is difficult that gasification, total sulfur data redundancy be poor or even undetectable great number of issues.
The universal sampling device of the present invention, can not only be connected with sulfur content detector, can also be with nitrogen analysis instrument, gold
Belong to content meter and microcontent water determination instrument etc. to be connected, can be used in carrying out the microcomponent in liquefied petroleum gas and gaseous hydrocarbon
Detection.
It is the device of the invention and method safe operation, simple, it is easy to accurately LPG samples be carried out fully to gasify and quantitative,
Reliable results.
Brief description of the drawings
Fig. 1 is the gaseous hydrocarbon of the present invention and the universal sampling device figure of liquefied petroleum gas.
Fig. 2 is the gaseous hydrocarbon of the present invention and the universal sampling device of liquefied petroleum gas, and passage converting member 5 therein is six
Port valve.
Fig. 3 is the six-way valve in Fig. 2 sampling devices.
Fig. 4 is the gaseous hydrocarbon of the present invention and the universal sampling device of liquefied petroleum gas, and passage converting member 5 therein is ten
Port valve.
Fig. 5 is the ten-way valve in Fig. 3 sampling devices.
Embodiment
Illustrate the sampling device of the present invention and method according to Fig. 1 devices.
It is sample introduction pattern to set passage converting member 5, and sample enters from injection port 1, by flow control valve 2, passes through gas
To change room 3 to gasify, gas pressure reducer 4 is depressurized, then enters quantitative loop 6 by the sample intake passage 51 of passage converting member 5,
Redundant sample is discharged through counterbalance valve 10 and by air exit 9；It is measurement pattern to set passage converting member 5, by carrier gas inlet 7
Measurement channel 52 of the carrier gas being passed through through carrier gas flux meter 8, passage converting member 5 enters quantitative loop 6, and carrier gas is by quantitative loop 6
Sample purge bring analyzer into and be measured.
Illustrate the sampling device of the present invention and method according to Fig. 2,3 devices and component.
Passage converting member 5 is six-way valve, and injection port 1 is logical through flow control valve 2, vaporizer 3, gas pressure reducer 4 and six
The 501 of valve are connected, and quantitative loop 6 is connected with 503, the 506 of six-way valve, and air exit 9 is connected with the 502 of six-way valve, carrier gas inlet 7
It is connected with the 504 of six-way valve, analyzer entrance 11 is connected with the 505 of six-way valve.
When setting six-way valve as sample introduction pattern, as shown in Figure 3A, the connection status in six-way valve between each valve is：
501 are connected with 506, and 504 are connected with 505, and 502 are connected with 503, at this time the 501-506 passages of six-way valve 5, quantitative loop 6,503-
502 passages just constitute the sample intake passage 51 of six-way valve 5.Sample enters from injection port 1, by flow control valve 2, passes through gasification
Room 3 is gasified, and gas pressure reducer 4 is depressurized, then enters quantitative loop 6, unnecessary sample by the sample intake passage 51 of six-way valve 5
Product are discharged after counterbalance valve by air exit 9, so as to fulfill carrying out filling sample to quantitative loop 6；When set six-way valve as measure mould
During formula, as shown in Figure 3B, the connection status in six-way valve between each valve is：501 are connected with 502, and 504 are connected with 503,
505 are connected with 506, and the 504-503 passages of six-way valve 5, quantitative loop 6,506-505 passages just constitute the survey of six-way valve 5 at this time
Measure passage 52.Measurement channel 52 of the carrier gas that carrier gas inlet 7 is passed through through carrier gas flux meter 8, six-way valve 5 enters quantitative loop 6, carries
Gas goes to measure operation together with the sample in quantitative loop 6 into analyzer entrance 11, the volume of sample into analyzer
For the volume of quantitative loop 6, this makes it possible to the measurement operation realized to sample, such as sulphur content analyzer determination sample can be connected
The physical property such as sulfur content.
Illustrate the sampling device of the present invention and method according to Fig. 4,5 devices and component.
Passage converting member 5 is ten-way valve, as shown in Figure 5A, each in ten-way valve when setting ten-way valve as sample introduction pattern
Connection status between a valve is：501 are connected with 502, and 503 are connected with 504, and 505 are connected with 506, and 507 are connected with 508,
509 are connected with 510；When setting ten-way valve as measurement pattern, as shown in Figure 5 B, the connection shape in ten-way valve between each valve
State is：501 are connected with 510, and 502 are connected with 503, and 504 are connected with 505, and 506 are connected with 507, and 508 are connected with 509；
When passage converting member 5 is ten-way valve, two quantitative loops can be set, while respectively each quantitative loop is independent
Set an injection port and with an air exit, can respectively to the two quantitative loops carry out sample introduction operation.
First injection port 1a is connected with the 509 of ten-way valve, and first quantitative loop 6a is connected with 507, the 510 of ten-way valve,；
Second injection port 1b is connected with the 503 of ten-way valve, and second quantitative loop 6b is connected with 502, the 505 of ten-way valve；Share exhaust
Outlet 9 is connected with 508, the 504 of ten-way valve；The volume of first quantitative loop 6a and second quantitative loop 6b can be set as identical
Or it is different, it is preferably set to the quantitative loop of small one and large one two kinds not co-contents；Carrier gas inlet 7 is connected with the 501 of ten-way valve, analysis
Instrument entrance 11 is connected with the 506 of ten-way valve.
Program setting ten-way valve is sample introduction pattern (as shown in Figure 5A), and sample 1 enters ten-way valve from 509, by 510, is connected
First quantitative loop 6a is connected to, then is connected with 507,508 with air exit 9, at this time the 509-508 passages of ten-way valve, quantitative loop
6a, 507-508 passage just constitute first sample intake passage 51a, so as to realize the cleaning to pipeline, quantitative loop and quantify
Ring 6a's fills sample process.Then ten-way valve is switched to measurement pattern (as shown in Figure 5 B) by program setting, carrier gas at this time is through carrying
After gas entrance 7, flow control valve 8, the valve 501 of ten-way valve 5 is entered, enters first quantitative loop 6a through 510, with quantifying
Sample in ring enters analyzer entrance 11 through 507,506 together, at this time the 501-506 passages of ten-way valve, quantitative loop 6a, 507-
506 passages just constitute Measurement channel 52a, so as to realize the measurement operation to sample.At this time, injection port 2 can load
Sample 2, can also be in idle state.If injection port 2 is used to load sample 2, when in Fig. 5 A conditions, at sample 1
In filling sample position, sample 2 is in measuring state under the action of carrier gas, and when in Fig. 5 B states, sample 1 is in measurement shape
State, sample 2, which is in, fills sample state.
Embodiment 1
By the sulfur content of Fig. 1 devices measurement liquefied petroleum gas sample, analyzer entrance 11 connects sulphur content determination instrument.Connect
Instrument power source, checks the connection of pipeline, sets 3 temperature of vaporizer as 100 DEG C, the setting value of temperature can be according to sample type
It is adjusted, 80 DEG C of setting quantitative loop 6 temperature, condition setting during according to bioassay standard sample.After temperature reaches setting value,
Carry out system purge and quantitative loop 6 fills sample process, quantitative loop volume is 3mL.Adjusting counterbalance valve makes line pressure stabilization public 3
Jin, works as pressure stability, carries out six-way valve switching, will be analyzed in the sample introduction analyzer in quantitative loop, and analytical instrument is read
The sulfur content gone out is 45.7mg/m3, it is 46.3mg/m to repeat result of the test3, as a result precision is good.
Embodiment 2
Experiment process does not replace sample, gasification room temperature simply is set as 120 DEG C with embodiment 1.The examination twice of measure
It is respectively 46.1mg/m to test result3And 46.3mg/m3, it was demonstrated that sample has been gasified totally at 100 DEG C, therefore reproducible.
Embodiment 3
By the sulfur content of Fig. 3 devices measurement liquefied petroleum gas sample, analyzer entrance 11 connects sulphur content determination instrument.Connect
Instrument power source, checks the connection of pipeline, sets 3 temperature of vaporizer as 100 DEG C, sets 6 temperature 60 C of quantitative loop.Treat temperature
After reaching setting value, carry out system purge and quantitative loop 6 fills sample process, sample to be measured is the liquefied petroleum gas that certain factory produces
Sample, using Liquid sample introduction mode, quantitative loop volume is 3mL after gasification.Adjusting counterbalance valve makes line pressure stabilization at 3 kilograms,
Work as pressure stability, carry out six-way valve switching, will be analyzed in the sample introduction analyzer in quantitative loop.The experiment twice of measure
As a result it is respectively 126.1mg/m3And 125.3mg/m3, result of the test is reproducible.
The sulfur content that above-mentioned identical liquefied petroleum gas sample is carried out using certain import brand liquefied petroleum gas injector is surveyed
It is fixed.Using the quantitative input mode of liquid valve injection, liquid quantitative ring, the result of the test measured is respectively the injector
123.1mg/m3And 110.8mg/m3And 94.6mg/m3.As it can be seen that liquid valve injection, liquid used by this liquefied petroleum gas injector
The quantitative mode of body quantitative loop causes result of the test poor repeatability.Continue to test, find as 5 kilograms of sample pressure ＜,
It is difficult to ensure that all fluid samples in quantitative loop, existing micro-bubble influences the repeatability of result of the test very big.
Embodiment 4
Pressure is simply adjusted to normal pressure by experiment process with embodiment 3.The measure of certain gaseous state hydrocarbon samples, measure knot are carried out
Fruit is 24mg/m3And 24.1mg/m3.When carrying out gaseous sample measure, it is only necessary to which line pressure is set to 1 kilogram to be surveyed
It is fixed.
Embodiment 5
Universal sampling device is simply connected to nitrogen content detecting instrument, has carried out certain gaseous state by experiment process with embodiment 3
The measure of hydrocarbon samples nitrogen content, measurement result 6.0mg/m3。
Embodiment 6
Universal sampling device described in application drawing 4 carries out standard liquefied petroleum gas (sulphur standard gas, sulfur content 0.7mg/kg)
The measure of sulfur content, the volume for quantitative loop 6a, 6b that ten-way valve 5 is connected is respectively 2mL, 10mL.1a sample introductions are used first, are used
6a is quantified, and setting line pressure stabilization is at 2 kilograms, and the spectrogram of the sulphur in integral curve is unintelligible, and baseline is unstable, measure
As a result it is 1.0mg/kg；Adjustment pipeline set pressure as 4 kilograms, the spectrogram of the sulphur in integral curve is relatively clear, baseline than
It is preceding steady, measurement result 0.8mg/kg.Use device 1b sample introductions, are quantified using 6a, set line pressure stabilization at 4 kilograms,
The integration spectrogram of sulphur in integral curve is apparent from, and baseline is steady, measurement result 0.7mg/kg.For low-sulfur content liquefaction
Oil gas sample, by increasing sample size, it is possible to achieve the accumulation sample introduction of sulfur content, therefore the sample size of unitary determination sulphur increases
Greatly, the response of sulphur and integral area improve, and spectrogram is clear, substantially increases the Monitoring lower-cut and accuracy of system.
Embodiment 7
Universal sampling device described in application drawing 4 carries out standard liquefied petroleum gas (sulphur standard gas, sulfur content 500mg/kg)
The measure of sulfur content, the volume for quantitative loop 6a, 6b that ten-way valve 5 is connected is respectively 2mL, 10mL.1b sample introductions are used first, are used
6b is quantified, and at 4 kilograms, measurement result can not be shown setting line pressure stabilization, exceed instrument upper limit of detection, integral spectrum
There is tack peak in figure；Using 1a sample introductions, quantified using 6a, setting line pressure stabilization is at 4 kilograms, measurement result 498.0mg/
kg.For the high liquefied petroleum gas sample of sulfur content, by reducing sample size, it is possible to achieve the decrement sample introduction of sulfur content so that
The sample size of unitary determination sulphur is reduced, so as to substantially increase the upper limit of detection and the scope of application of system.
Claims (14)
1. the universal sampling device of a kind of gaseous hydrocarbon and liquefied petroleum gas, including：Sample injection port (1), sample flow control valve
(2), sample evaporation chamber (3), gas pressure reducer (4), passage converting member (5), gasometry ring (6), carrier gas inlet (7), load
Air-flow gauge (8), air exit (9), counterbalance valve (10), analyzer entrance (11), heating control module (12), the sample into
Sample mouth (1) and sample flow control valve (2), sample evaporation chamber (3), gas pressure reducer (4), passage converting member (5) successively phase
Even, the gasometry ring (6) is connected with passage converting member (5), the carrier gas inlet (7) and carrier gas flux meter (8), passage
Converting member (5) is sequentially connected, and the analyzer entrance (11) is connected with passage converting member (5), the passage converting member
(5) it is sequentially connected with counterbalance valve (10), air exit (9), the heating control module (12) is used for the temperature for controlling each component.
2. device described in accordance with the claim 1, it is characterised in that the passage converting member (5) includes sample feeding and leads to
Road (51), Measurement channel (52), sample intake passage (51) and quantitative loop (6), counterbalance valve (10), air exit (9) during sample feeding
It is connected；Measurement channel (52) is connected with quantitative loop (6), analyzer entrance (11) when sample measures.
3. device described in accordance with the claim 1, it is characterised in that set in the sample injection port (1) or carrier gas inlet (7)
Filter.
4. device described in accordance with the claim 1, it is characterised in that the temperature of the sample evaporation chamber (3) is controlled by the heating
Molding block (12) controls.
5. device described in accordance with the claim 1, it is characterised in that the passage converting member (5) is multiple-way valve.
6. device described in accordance with the claim 1, it is characterised in that the passage converting member (5) for six-way valve, eight ways valve,
Ten-way valve, ten two-port valves or ten four-way valves.
7. device described in accordance with the claim 1, it is characterised in that the passage converting member (5), gasometry ring (6) are
Metal material.
8. device described in accordance with the claim 1, it is characterised in that the passage converting member (5), gasometry ring (6)
Inner surface carries sulfur passivation coating.
9. device described in accordance with the claim 1, it is characterised in that the passage converting member (5) is to automatically control or manually
Control.
10. device described in accordance with the claim 1, it is characterised in that the volume of the gasometry ring (6) is 1mL~10mL；
The number of the gasometry ring (6) is one or more.
11. device described in accordance with the claim 1, it is characterised in that in sample injection port (1) and sample flow control valve (2)
Between add filter.
12. device described in accordance with the claim 1, it is characterised in that in the sample flow control valve (2) and sample evaporation chamber
(3) visual transparent pipe is provided between.
13. device described in accordance with the claim 1, it is characterised in that the analyzer entrance (11) and sulfur content detector, nitrogen
Content meter, tenor analyzer or microcontent water determination instrument are connected.
14. a kind of sampling device using described in one of claim 1-13 come carry out gaseous hydrocarbon and liquefied petroleum gas it is general into
Quadrat method, including：1) passage converting member (5) is set as sample introduction pattern, and sample enters from injection port (1), by flow-rate adjustment
Valve (2), is gasified by vaporizer (3), and gas pressure reducer (4) is depressurized, then the sample introduction by passage converting member (5)
Passage (51) enters quantitative loop (6)；2) passage converting member (5) is set as measurement pattern, the carrier gas that carrier gas inlet (7) is passed through
Measurement channel (52) through carrier gas flux meter (8), passage converting member (5) enters quantitative loop (6), in carrier gas and quantitative loop (6)
Sample go to measure operation into analyzer entrance (11) together.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108732287A (en) * | 2018-08-08 | 2018-11-02 | 成都科林分析技术有限公司 | A kind of thermal desorption gas sample injection device and method |
| CN111721753A (en) * | 2020-05-15 | 2020-09-29 | 上海应用技术大学 | Device and method for directly feeding samples into oil product |
| CN114062040A (en) * | 2021-11-10 | 2022-02-18 | 惠州市绿色能源与新材料研究院 | Liquid storage and quantitative sampling device and method and application thereof |
| CN114910572A (en) * | 2021-02-10 | 2022-08-16 | 上海中化科技有限公司 | Sample introduction device and method, and quantitative analysis device and method |
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| CN108732287A (en) * | 2018-08-08 | 2018-11-02 | 成都科林分析技术有限公司 | A kind of thermal desorption gas sample injection device and method |
| CN108732287B (en) * | 2018-08-08 | 2024-01-12 | 成都科林分析技术有限公司 | Thermal desorption gas sampling device and method |
| CN111721753A (en) * | 2020-05-15 | 2020-09-29 | 上海应用技术大学 | Device and method for directly feeding samples into oil product |
| CN111721753B (en) * | 2020-05-15 | 2023-06-30 | 上海应用技术大学 | Device and method for directly sampling oil |
| CN114910572A (en) * | 2021-02-10 | 2022-08-16 | 上海中化科技有限公司 | Sample introduction device and method, and quantitative analysis device and method |
| CN114062040A (en) * | 2021-11-10 | 2022-02-18 | 惠州市绿色能源与新材料研究院 | Liquid storage and quantitative sampling device and method and application thereof |
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