CN208721632U - A kind of detection device of non-methane total hydrocarbons - Google Patents
A kind of detection device of non-methane total hydrocarbons Download PDFInfo
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Abstract
The utility model relates to gasmetry field more particularly to a kind of detection devices of non-methane total hydrocarbons.Gas cylinder is connected to ten-way valve, and ten-way valve stretches out pipeline arranged side by side and is connected to quantitative loop A group (3) and quantitative loop B group (4), and the quantitative loop A group (3) is connected to total hydrocarbon column (5)；The quantitative loop B group (4) is connected to methane column (6)；The total hydrocarbon column (5) and methane column (6) is respectively connected to FID hydrogen flame ionization detector.By controlling sample feeding volume according to the setting of a variety of quantitative loops, sample respectively enters quantitative loop using ten-way valve, enters in gas chromatographic detection device with carrier gas and analyze the utility model.The utility model mainly includes ten-way valve, a variety of quantitative loops, gas chromatographic detection device.The step of the utility model controls sample feeding volume according to the setting of a variety of quantitative loops, effectively reaches accurate diluted purpose, saves manual dilution, greatly improves detection efficiency, easy to operate.
Description
Technical field
The utility model relates to gasmetry field more particularly to a kind of detection devices of non-methane total hydrocarbons.
Background technique
Non-methane total hydrocarbons, i.e., the Zong Cheng ﹝ of carbon hydrocarbon compound in addition to methane are mainly C2~C8 ﹞, including alkane,
The substances such as alkene, aromatic hydrocarbon and oxygen-containing hydrocarbon.Hydrocarbons are inflammable and explosive, and the non-methane total hydrocarbons in atmosphere not only directly threatens the mankind
Health, while also will cause photochemical fog under certain condition, the mankind and environment for the survival of mankind caused
Serious negative effect.Current common oil product is by the mixture of a variety of carbon hydrocarbon compounds, and light component is in certain steaming
Highly volatile under vapour pressure causes oil product from source to entire transportation system or even user terminal, this process is to involved
There is serious non-methane total hydrocarbons pollution problems for workplace.
The multinomial air pollution emission standard that country and place are formulated makes regulation to non-methane hydrocarbon emission limit value.It is non-
The testing process of methane total hydrocarbon is usually spot sampling, lab analysis.Spot sampling generally uses aluminium foil gas production bag or glass
Syringe, is primarily present the advantages that cheap, easy to carry, air-tightness is good, and lab analysis it is common with hydrogen flame from
The advantages that gas chromatograph of sonization Jian Ce Qi ﹝ FID ﹞ is analyzed, and accuracy is high, reproducible, detection cycle is short.
Lab analysis is to be subtracted each other respectively by total hydrocarbon column and methane column analysis total hydrocarbon value and methane value, result as non-
Methane total hydrocarbon value.Input mode generally comprises sample introduction after direct injected and processing, for sample of the concentration within the scope of calibration curve
Airbag sample is directly directly injected into chromatography by product；Processing need to be first diluted for high-concentration waste gas sample, reinject color
Spectrum analysis.Sample dilution process generally comprises instrument dilution method and manual dilution method, and instrument dilution method equipment price is expensive, to sample
Product container containing requires high, therefore the common dilution process in laboratory is manual dilution method, i.e., is distinguished using 100ml glass syringe
It extracts a certain amount of sample gas and diluent gas be sufficiently mixed, determines according to actual conditions suitable concentration value.
Non-methane total hydrocarbons is usually to transport sample back experiment using gas production bag or glass syringe in laboratory testing exhaust gas
Room carries out analysis detection, and in the analysis process, high-concentration waste gas sample is easy to appear following several problems to a large amount of waste gas sample:
1, it be easy to cause instrument to overload；2, the problem of causing instrumental baseline fluctuation big, influencing sensitivity and upper limit of detection；3, easily remain,
The problems such as chromatographic column easy to pollute, injection port and detector.
The utility model is for gas production bag in laboratory or the analysis of glass syringe sample detection, because gas production bag or glass are infused
Emitter volume itself is smaller, and acquired sample volume is too small, is difficult with equipment and is diluted, manual dilution technology be at present most
Common dilution means.But for gas, gas molecule is more active, and mobility is big, and sampling is difficult, and quantitative is even more not
Easily.Dilution haves the defects that the following aspects by hand: 1, error is big, and accuracy is not high；2, inconvenient, gas cylinder is subsidiary to be subtracted
Pressure valve is not easy to control；3, gas mixing is insufficient etc..
Utility model content
The purpose of utility model: in order to provide detection device and the detection side of a kind of better non-methane total hydrocarbons of effect
Method, specific purposes are shown in multiple substantial technological effects of specific implementation part.
In order to reach purpose as above, the utility model adopts the following technical scheme:
A kind of detection device of non-methane total hydrocarbons, which is characterized in that include gas cylinder, gas cylinder is connected to ten-way valve, ten-way valve
It stretches out pipeline arranged side by side and is connected to quantitative loop A group and quantitative loop B group, the quantitative loop A group is connected to total hydrocarbon column；Described
Quantitative loop B group is connected to methane column；The total hydrocarbon column and methane column is respectively connected to FID hydrogen flame ionization detector.
The further technical solution of the utility model is that two FID hydrogen flame ionization detectors are connected to detector bridge
Road；Above FID hydrogen flame ionization detector communication link then data processing system.
The further technical solution of the utility model is that the quantitative loop A group, quantitative loop A group includes quantitative loop A1,
The both ends quantitative loop A1 are connected with triple valve a1, triple valve a2, and quantitative loop A2 is connected with triple valve a1, triple valve a2, quantitative
Ring A3 is connected with triple valve a3, triple valve a4；Quantitative loop B group includes that quantitative loop B1 is connected with triple valve b1, triple valve b2
It connects, quantitative loop B2 is connected with triple valve b1, triple valve b2, and quantitative loop B3 is connected with triple valve b3, triple valve b4.
A kind of detection method of non-methane total hydrocarbons, which is characterized in that utilize device described in any one as above, quantitative loop
A group and quantitative loop B component are not controlled by control system, the unlatching of quantitative loop group each triple valve setting switch control gas circuit or
It closes；
Twin columns flow path, respectively total hydrocarbon column and methane column is arranged in the present apparatus, and quantifying for the total hydrocarbon column of selection is respectively set
The quantitative loop B group of ring A group and methane column controls sample introduction by ten-way valve, when valve is in sample introduction state, with gas production bag or glass
Syringe sampling, makes sample be respectively filled with quantitative loop A group and quantitative loop B group, and extra gas is flowed out from exhaust pipe；Rotary valve
When to operating status, while open detection key；Sample enters respectively with carrier gas after total hydrocarbon column and methane post separation at this time
FID flame ionization ditector analytical calculation obtains end value.
When flame ionization ditector, which analyzes the non-methane total hydrocarbons concentration in exhaust gas, is higher by preset value, according to exceeding
The range of concentration determines that extension rate selects corresponding quantitative loop, and control system corresponding to quantitative loop opens quantitative loop A group and B
Group, other quantitative loops are in close state；Control sampling volume is equal to sample gas extension rate, passes through total hydrocarbon column respectively
With methane column, corresponding response is obtained into detector analysis；When flame ionization ditector analyzes in exhaust gas
When non-methane total hydrocarbons concentration is lower or normal, can direct injected, pass through control system corresponding to quantitative loop open quantitative loop
A1 and quantitative loop B1 closes other quantitative loop groups；Sample gas passes through total hydrocarbon column and methane column respectively, obtains into detector analysis
Corresponding response.
The further technical solution of the utility model is that the above detection is detected with chromatography of gases, testing conditions are as follows: filling
Column: total hydrocarbon column and methane column；Nitrogen: high pure nitrogen, purity are greater than 99.999%；Standard Gas of Methane and except hydrocarbon air etc..
The further technical solution of the utility model is, injector temperature: 120 DEG C；Column temperature: 80 DEG C；Detector temperature:
120℃；Carrier gas flux: 20ml/min.
The further technical solution of the utility model is that the calibration series of the methane gas is: will with high pure nitrogen
Standard Gas of Methane dilutes step by step, configures the calibration series of 5 concentration gradients, the concentration of calibration series is respectively 50,100,
200、400、800mg/m3。
It using the utility model of technical solution as above, has the advantages that compared with the existing technology: the utility model
By controlling sample feeding volume according to the setting of a variety of quantitative loops, sample respectively enters quantitative loop using ten-way valve, with carrier gas
Into being analyzed in gas chromatographic detection device.The utility model mainly includes ten-way valve, a variety of quantitative loops, gas chromatographic detection dress
It sets.The utility model controls sample feeding volume according to the setting of a variety of quantitative loops, effectively reaches accurate diluted purpose, saves
The step of diluting manually is gone, detection efficiency is greatly improved, it is easy to operate.
Detailed description of the invention
In order to further illustrate the utility model, it is further illustrated with reference to the accompanying drawing:
Fig. 1 is the structural schematic diagram of utility model；
Wherein: 1. gas cylinders；2. ten-way valve；3. quantitative loop A group；4. quantitative loop B group；5. total hydrocarbon column；6. methane column；7.FID
Hydrogen flame ionization detector；8. detector bridge；9. data processing system.
Specific embodiment
With reference to the accompanying drawings and detailed description, the utility model is furtherd elucidate, it should be understood that following specific embodiment parties
Formula is merely to illustrate the utility model rather than limitation the scope of the utility model.It needs in the description of the present invention,
Illustrate, term " center ", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outside", "top", "bottom" etc. refer to
The orientation or positional relationship shown be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the utility model and
Simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construction
And operation, therefore should not be understood as limiting the present invention.Furthermore unless specifically defined or limited otherwise, term " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
This patent provides a variety of concomitant regimens, in place of different expression, belong to modified scheme based on basic scheme or
It is parallel type scheme.Every kind of scheme has the unique features of oneself.
For the utility model by controlling sample feeding volume according to the setting of plurality of specifications quantitative loop, main includes two groups fixed
Measure ring A group (total hydrocarbon column use) and quantitative loop B group (methane column use): quantitative loop A1 (1mL), quantitative loop A2 (0.1mL), quantitative loop A3
(0.05mL), quantitative loop B1 (1mL), quantitative loop B2 (0.1mL), quantitative loop B3 (0.05mL), it is true according to the range beyond concentration
Surely suitable quantitative loop is selected, dilution ratio general control is at 10-20 times.Quantitative loop by control system carry out control unlatching or
It closes, sample is entered in selected quantitative loop using ten-way valve, is entered in gas chromatographic detection device with carrier gas and is analyzed.This reality
With novel mainly including ten-way valve, plurality of specifications quantitative loop, flame ionization ditector, gas chromatographic detection device.This reality
With novel the step of controlling sample feeding volume according to the setting of a variety of quantitative loops, saving manual dilution, inspection is greatly improved
Efficiency is surveyed, it is easy to operate.
1, in a kind of exhaust gas non-methane total hydrocarbons detection device, including the corresponding control system of ten-way valve, gas piping, quantitative loop
System, flame ionization ditector, quantitative loop.Wherein ten-way valve is separately connected two groups of quantitative loop A groups (total hydrocarbon column use) and quantifies
Ring B group (methane column use), quantitative loop A group include that the both ends quantitative loop A1 are connected with triple valve a1, triple valve a2, quantitative loop A2
It is connected with triple valve a1, triple valve a2, quantitative loop A3 is connected with triple valve a3, triple valve a4；Quantitative loop B group includes fixed
Amount ring B1 be connected with triple valve b1, triple valve b2, quantitative loop B2 is connected with triple valve b1, triple valve b2, quantitative loop B3 and
Triple valve b3, triple valve b4 are connected.Carrier gas respectively enters total hydrocarbon column and methane column by quantitative loop, eventually enters into FID hydrogen fire
Flame ionization detector determines the end value of total hydrocarbon and methane respectively, its result is subtracted each other, non-methane total hydrocarbons can be obtained
Concentration value.
Quantitative loop group is controlled by control system respectively, the unlatching of each valve setting switch control gas circuit of quantitative loop group or pass
It closes, triple valve a1 and triple valve a2, triple valve a3 and triple valve a4, triple valve b1 and triple valve b2, triple valve b3 and triple valve
Control switch is respectively set in b4.
Twin columns flow path, respectively total hydrocarbon column and methane column is arranged in the present apparatus, and the quantitative loop A group (total hydrocarbon of selection is respectively set
Column use) and quantitative loop B group (methane column use), sample introduction is controlled by ten-way valve, when valve is in sample introduction state, with gas production bag or glass
Syringe sampling, makes sample be respectively filled with quantitative loop A group and quantitative loop B group, and extra gas is flowed out from exhaust pipe；Rotary valve
When to operating status, while open detection key.Sample enters respectively with carrier gas after total hydrocarbon column and methane post separation at this time
FID flame ionization ditector analytical calculation obtains end value.
When flame ionization ditector, which analyzes the non-methane total hydrocarbons concentration in exhaust gas, is higher by preset value, according to exceeding
The range of concentration determines that extension rate selects corresponding quantitative loop, and control system corresponding to quantitative loop opens quantitative loop A group and B
Group, other quantitative loops are in close state.Control sampling volume is equal to sample gas extension rate, passes through total hydrocarbon column respectively
With methane column, corresponding response is obtained into detector analysis；When flame ionization ditector analyzes in exhaust gas
When non-methane total hydrocarbons concentration is lower or normal, can direct injected, pass through control system corresponding to quantitative loop open quantitative loop
A1 and B1 closes other quantitative loop groups.Sample gas passes through total hydrocarbon column and methane column respectively, obtains into detector analysis corresponding
Response.
Utility model device is equipped with: FID flame ionization ditector, packed column: total hydrocarbon column and methane column；Nitrogen:
High pure nitrogen, purity are greater than 99.999%；Standard Gas of Methane and except hydrocarbon air etc..
The optimal reference condition of gas phase chromatographic device: injector temperature: 120 DEG C is obtained by experiment；Column temperature: 80 DEG C；Inspection
Survey device temperature: 120 DEG C；Carrier gas flux: 20ml/min.
Calibration series: being diluted Standard Gas of Methane with high pure nitrogen step by step, configures the calibration series of 5 concentration gradients,
The concentration of calibration series is respectively 50,100,200,400,800 mg/m3。
Generally speaking: the utility model relates to a kind of detection devices of the non-methane total hydrocarbons in exhaust gas, mainly solve experiment
Indoor airbag or glass syringe acquisition sample concentration it is much cause instrument overload, influence the data precision and instrumental pollution etc. ask
Topic.By controlling sample feeding volume according to the setting of a variety of quantitative loops, sample is entered quantitative the utility model using ten-way valve
Ring enters in gas chromatographic detection device with carrier gas and analyzes.The utility model mainly includes ten-way valve, a variety of quantitative loops, gas phase
Chromatographic detection apparatus.The utility model controls sample feeding volume according to the setting of a variety of quantitative loops, saves manual diluted step
Suddenly, detection efficiency is greatly improved, it is easy to operate, it has the value of popularization and application.
It is for a more detailed description to the utility model below with reference to specific implementation case:
Embodiment 1
The detection device of non-methane total hydrocarbons in a kind of exhaust gas, including the corresponding control system of ten-way valve, gas piping, quantitative loop
System, flame ionization ditector, quantitative loop.Wherein ten-way valve is separately connected two groups of quantitative loop A groups (total hydrocarbon column use) and quantifies
Ring B group (methane column use), quantitative loop A group include that the both ends quantitative loop A1 are connected with triple valve a1, triple valve a2, quantitative loop A2
It is connected with triple valve a1, triple valve a2, quantitative loop A3 is connected with triple valve a3, triple valve a4；Quantitative loop B group includes quantitative
Ring B1 is connected with triple valve b1, triple valve b2, and quantitative loop B2 is connected with triple valve b1, triple valve b2, quantitative loop B3 and three
Port valve b3, triple valve b4 are connected.Carrier gas respectively enters total hydrocarbon column and methane column by quantitative loop, eventually enters into FID hydrogen flame
Ionization detector determines the end value of total hydrocarbon and methane respectively, its result is subtracted each other, and the dense of non-methane total hydrocarbons can be obtained
Angle value.
When flame ionization ditector analyzes the non-methane total hydrocarbons concentration in exhaust gas higher than preset value 800mg/m3When,
If concentration is 10000mg/m3The waste gas sample of left and right, is respectively set the quantitative loop A3 (total hydrocarbon column use) and quantitative loop B3 of selection
(methane column use), setting extension rate are 20 times, open quantitative loop A3 and quantitative loop B3 by set-up of control system, other are quantitative
Ring is in closed state.With gas production bag sample introduction, when ten-way valve is in sample introduction state, make sample be respectively filled with quantitative loop A3 and
Quantitative loop B3, extra gas are flowed out from exhaust pipe；When rotary valve to operating status, while open detection key.Sample at this time
Respectively with carrier gas after total hydrocarbon column and methane post separation, analyzed into FID flame ionization ditector, from sample introduction to analysis
Deadline is 2min.The oxygen peak value on total hydrocarbon column is measured simultaneously, and total hydrocarbon value, methane value and oxygen are calculated by calibration curve
Its result is subtracted each other the measured value that non-methane total hydrocarbons can be obtained by peak value, multiplied by extension rate 20, show that primary sample gas is non-
The actual value of methane total hydrocarbon.
Embodiment 2
The detection device of non-methane total hydrocarbons in a kind of exhaust gas, including the corresponding control system of ten-way valve, gas piping, quantitative loop
System, flame ionization ditector, quantitative loop.Wherein ten-way valve is separately connected two groups of quantitative loop A groups (total hydrocarbon column use) and quantifies
Ring B group (methane column use), quantitative loop A group include that the both ends quantitative loop A1 are connected with triple valve a1, triple valve a2, quantitative loop A2
It is connected with triple valve a1, triple valve a2, quantitative loop A3 is connected with triple valve a3, triple valve a4；Quantitative loop B group includes quantitative
Ring B1 is connected with triple valve b1, triple valve b2, and quantitative loop B2 is connected with triple valve b1, triple valve b2, quantitative loop B3 and three
Port valve b3, triple valve b4 are connected.Carrier gas respectively enters total hydrocarbon column and methane column by quantitative loop, eventually enters into FID hydrogen flame
Ionization detector determines the end value of total hydrocarbon and methane respectively, its result is subtracted each other, and the dense of non-methane total hydrocarbons can be obtained
Angle value.
When flame ionization ditector analyzes the non-methane total hydrocarbons concentration in exhaust gas higher than preset value 800mg/m3When,
If concentration is 5000mg/m3The waste gas sample of left and right, is respectively set the quantitative loop A2 (total hydrocarbon column use) and quantitative loop B2 (first of selection
Alkane column use), setting extension rate is 10 times, opens quantitative loop A2 and quantitative loop B2, other quantitative loops by set-up of control system
It is in closed state.Sample is set to be respectively filled with quantitative loop A2 and determine when ten-way valve is in sample introduction state with gas production bag sample introduction
Ring B2 is measured, extra gas is flowed out from exhaust pipe；When rotary valve to operating status, while open detection key.Sample point at this time
It not with carrier gas after total hydrocarbon column and methane post separation, is analyzed into FID flame ionization ditector, from sample introduction to having analyzed
It is 2min at the time.The oxygen peak value on total hydrocarbon column is measured simultaneously, and total hydrocarbon value, methane value and oxygen peak are calculated by calibration curve
Its result, is subtracted each other the measured value that non-methane total hydrocarbons can be obtained, multiplied by extension rate 10, obtains the non-first of primary sample gas by value
The actual value of alkane total hydrocarbon.
Embodiment 3
The detection device of non-methane total hydrocarbons in a kind of exhaust gas, including the corresponding control system of ten-way valve, gas piping, quantitative loop
System, flame ionization ditector, quantitative loop.Wherein ten-way valve is separately connected two groups of quantitative loop A groups (total hydrocarbon column use) and quantifies
Ring B group (methane column use), quantitative loop A group include that the both ends quantitative loop A1 are connected with triple valve a1, triple valve a2, quantitative loop A2
It is connected with triple valve a1, triple valve a2, quantitative loop A3 is connected with triple valve a3, triple valve a4；Quantitative loop B group includes quantitative
Ring B1 is connected with triple valve b1, triple valve b2, and quantitative loop B2 is connected with triple valve b1, triple valve b2, quantitative loop B3 and three
Port valve b3, triple valve b4 are connected.Carrier gas respectively enters total hydrocarbon column and methane column by quantitative loop, eventually enters into FID hydrogen flame
Ionization detector determines the end value of total hydrocarbon and methane respectively, its result is subtracted each other, and the dense of non-methane total hydrocarbons can be obtained
Angle value.
When flame ionization ditector analyzes the non-methane total hydrocarbons concentration in exhaust gas lower than preset value 800mg/m3When,
If concentration is 500mg/m3The waste gas sample of left and right, is respectively set the quantitative loop A1 (total hydrocarbon column use) and quantitative loop B1 (first of selection
Alkane column use), setting extension rate is 1 times, opens quantitative loop A1 and quantitative loop B1 by set-up of control system, other quantitative loops are equal
It is in close state.Sample is set to be respectively filled with quantitative loop A1 and quantify when ten-way valve is in sample introduction state with gas production bag sample introduction
Ring B1, extra gas are flowed out from exhaust pipe；When rotary valve to operating status, while open detection key.Sample is distinguished at this time
It with carrier gas after total hydrocarbon column and methane post separation, analyzes into FID flame ionization ditector, is completed from sample introduction to analysis
Time is 2min.The oxygen peak value on total hydrocarbon column is measured simultaneously, and total hydrocarbon value, methane value and oxygen peak are calculated by calibration curve
Its result, is subtracted each other the measured value that non-methane total hydrocarbons can be obtained, multiplied by extension rate 1, obtains the non-first of primary sample gas by value
The actual value of alkane total hydrocarbon.
Comparative example 1
The detection device of non-methane total hydrocarbons in a kind of exhaust gas, by air circuit connection quantitative loop A group (total hydrocarbon column use) and quantitative
Gas phase parameter: injector temperature: 120 DEG C is arranged in ring B group (methane column use)；Column temperature: 80 DEG C；Detector temperature: 120 DEG C；It carries
Throughput: 20ml/min.When flame ionization ditector analyzes the non-methane total hydrocarbons concentration in exhaust gas higher than preset value 800
mg/m3When, if concentration is 5000mg/m3The waste gas sample of left and right: direct injected processing, sample volume 1mL, sample is respectively with load
Gas after total hydrocarbon column and methane post separation, into FID flame ionization ditector analyze, total hydrocarbon peak occur tack peak and
Peak type is wider, and baseline fluctuation amplitude becomes larger.Dilution sample introduction processing: the quantitative loop A2 (total hydrocarbon column use) of selection is respectively set and quantifies
Ring B2 (methane column use), setting extension rate are 10 times, open quantitative loop A2 and quantitative loop B2 by set-up of control system, other
Quantitative loop is in closed state.Sample is respectively with carrier gas after total hydrocarbon column and methane post separation, into FID hydrogen flame ion
Change detector analysis, total hydrocarbon peak and methane peak peak type are in smooth arc shape, and baseline is steady.
The above analytic explanation, not diluted high-concentration waste gas sample are directly entered detector, cause instrument overload, cause
Baseline fluctuation amplitude becomes larger, the decline of the accuracy of detection data, causes certain damage to the hardware of instrument.
1, sample feeding volume is controlled according to the setting of plurality of specifications quantitative loop, mainly includes two groups of quantitative loop A group (total hydrocarbons
Column use) and quantitative loop B group (methane column use): quantitative loop A1 (1mL), quantitative loop A2 (0.1mL), quantitative loop A3 (0.05mL), determine
Ring B1 (1mL), quantitative loop B2 (0.1mL), quantitative loop B3 (0.05mL) are measured, determines that selection is suitable according to the range beyond concentration
Quantitative loop, dilution ratio general control is at 10-20 times.
2, utility model device includes ten-way valve, gas piping, quantitative loop corresponds to control system, hydrogen flameionization is examined
Survey device, quantitative loop.Wherein ten-way valve is separately connected two groups of quantitative loop A groups (total hydrocarbon column use) and quantitative loop B group (methane column use),
Quantitative loop A group includes that the both ends quantitative loop A1 are connected with triple valve a1, triple valve a2, quantitative loop A2 and triple valve a1, triple valve
A2 is connected, and quantitative loop A3 is connected with triple valve a3, triple valve a4；Quantitative loop B group include quantitative loop B1 and triple valve b1,
Triple valve b2 is connected, and quantitative loop B2 is connected with triple valve b1, triple valve b2, quantitative loop B3 and triple valve b3, triple valve b4
It is connected.
3, quantitative loop is opened or closed by control system.
In a creative way, above each effect is individually present, moreover it is possible to the combination of the above results is completed with a nested structure.
It is clear that the technical effect that the above structure is realized is realized, if the additional technical solution is not taken into account, this patent title is also
It can be a kind of novel detection method.Part details is not shown in the figure.
It should be noted that multiple schemes that this patent provides include the basic scheme of itself, independently of each other, not mutually
It restricts, but it can also be combined with each other in the absence of conflict, reach multiple effects and realize jointly.
Basic principles, main features, and advantages of the present invention has been shown and described above.Ability
The technical staff in domain should be recognized that the present utility model is not limited to the above embodiments, described in the above embodiment and specification
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model can also
There are various changes and modifications, these changes and improvements are both fallen in claimed range.
Claims (3)
1. a kind of detection device of non-methane total hydrocarbons, which is characterized in that include gas cylinder, gas cylinder is connected to ten-way valve, and ten-way valve is stretched
Pipeline arranged side by side is connected to quantitative loop A group (3) and quantitative loop B group (4) out, and the quantitative loop A group (3) is connected to total hydrocarbon column
(5)；The quantitative loop B group (4) is connected to methane column (6)；The total hydrocarbon column (5) and methane column (6) is respectively connected to
FID hydrogen flame ionization detector.
2. a kind of detection device of non-methane total hydrocarbons as described in claim 1, which is characterized in that two FID hydrogen flame ions
Change detector and is connected to detector bridge；Above FID hydrogen flame ionization detector communication link then data processing system.
3. a kind of detection device of non-methane total hydrocarbons as described in claim 1, which is characterized in that the quantitative loop A group (3)
Including quantitative loop A1, the both ends quantitative loop A1 are connected with triple valve a1, triple valve a2, quantitative loop A2 and triple valve a1, triple valve
A2 is connected, and quantitative loop A3 is connected with triple valve a3, triple valve a4；Quantitative loop B group includes quantitative loop B1 and triple valve b1, three
Port valve b2 is connected, and quantitative loop B2 is connected with triple valve b1, triple valve b2, quantitative loop B3 and triple valve b3, triple valve b4 phase
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201821219618.7U CN208721632U (en) | 2018-07-31 | 2018-07-31 | A kind of detection device of non-methane total hydrocarbons |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821219618.7U CN208721632U (en) | 2018-07-31 | 2018-07-31 | A kind of detection device of non-methane total hydrocarbons |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110286176A (en) * | 2019-07-25 | 2019-09-27 | 马鞍山市桓泰环保设备有限公司 | A kind of factory's circle VOCs on-line monitoring system suitable for multi-state |
| CN110780015A (en) * | 2018-07-31 | 2020-02-11 | 西安市宇驰检测技术有限公司 | Detection device and detection method for non-methane total hydrocarbons |
-
2018
- 2018-07-31 CN CN201821219618.7U patent/CN208721632U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110780015A (en) * | 2018-07-31 | 2020-02-11 | 西安市宇驰检测技术有限公司 | Detection device and detection method for non-methane total hydrocarbons |
| CN110286176A (en) * | 2019-07-25 | 2019-09-27 | 马鞍山市桓泰环保设备有限公司 | A kind of factory's circle VOCs on-line monitoring system suitable for multi-state |
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