CN203630097U - Sampling filter of gas chromatograph - Google Patents
Sampling filter of gas chromatograph Download PDFInfo
- Publication number
- CN203630097U CN203630097U CN201320765457.2U CN201320765457U CN203630097U CN 203630097 U CN203630097 U CN 203630097U CN 201320765457 U CN201320765457 U CN 201320765457U CN 203630097 U CN203630097 U CN 203630097U
- Authority
- CN
- China
- Prior art keywords
- gas
- gas chromatograph
- filtrator
- draft tube
- escape pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005070 sampling Methods 0.000 title claims abstract description 19
- 238000001914 filtration Methods 0.000 claims abstract description 48
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 239000000839 emulsion Substances 0.000 claims description 9
- 239000004809 Teflon Substances 0.000 claims description 6
- 229920006362 Teflon® Polymers 0.000 claims description 6
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 5
- 229910052731 fluorine Inorganic materials 0.000 claims description 5
- 239000011737 fluorine Substances 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 5
- 239000012535 impurity Substances 0.000 abstract description 15
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000004816 latex Substances 0.000 abstract 1
- 229920000126 latex Polymers 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000007787 solid Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 206010019133 Hangover Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to a sampling filter of a gas chromatograph, belonging to the field of gas detection equipment. The sampling filter of the gas chromatograph disclosed by the utility model comprises a fine filtering component; the gas inlet end of the fine filtering component is connected to a gas inlet pipe; a coarse filtering component is arranged in the gas inlet pipe; the gas outlet end of the fine filtering component is connected to a gas outlet pipe; the gas outlet pipe is connected with the inlet of the gas chromatograph through a latex pipe. According to the sampling filter of the gas chromatograph disclosed by the utility model, due to two-grade filtering, the impurity removing effect of sample gas is good, the gas purity is high, and the disadvantage of a gas chromatograph without a sample filter is made up; the sampling filter of the gas chromatograph is convenient to assemble and disassemble, the accuracy and the precision of detection results are effectively increased, and the service life of a chromatographic column is prolonged.
Description
Technical field
The utility model relates to a kind of gas chromatograph sampling filtrator, belongs to gas detection equipment field.
Background technology
Utilizing the instrument of thermal conductivity detector (TCD) mensurated gas composition sample is one of gas chromatograph, but gaseous sample especially tail gas sample often contain various impurity, often cause its chromatographic column poisoning, cannot normally analyze.At present, the gas chromatograph of a lot of instrument manufacturer production is not equipped with corresponding sample filter.
During due to on-site sampling, for smooth sampling must have certain air pressure, therefore the gaseous sample of getting especially tail gas sample often carry a small amount of impurity secretly.Without sample filter, when direct injected, impurity enters instrument, can make chromatogram spectrogram baseline deviation, goes out peak hangover, and measurement result is unstable, has a strong impact on its accuracy and precision.
Utility model content
According to above the deficiencies in the prior art, problem to be solved in the utility model is: a kind of gas chromatograph sampling filtrator is provided, sample gas Impurity removal is effective, purity is high, make up the defect of gas chromatograph n.s. filtrator, easy accessibility, has effectively improved accuracy and the precision of testing result.
Gas chromatograph sampling filtrator described in the utility model, comprises smart filtering element, and smart filtering element inlet end connects draft tube, and coarse filtration element is set in draft tube; Essence filtering element outlet side connects escape pipe, and escape pipe is connected with gas chromatograph entrance by emulsion tube.
After sample gas is entered by draft tube, first coarse filtration element is removed the larger solid impurity in gas, essence filtering element further filters out minute impurities wherein, pass through two-stage filtration, make sample guarantee to meet the desired purity of chromatographic column, effectively improve accuracy and the precision of testing result, and extended chromatographic column serviceable life.Be connected with gas chromatograph entrance by emulsion tube, on the one hand guarantee impermeability, easy accessibility on the other hand, has made up the defect of gas chromatograph n.s. filtrator.
Between described smart filtering element and draft tube, escape pipe, flexible seals is all set, comprises Teflon tap, rubber strip etc., preferably Teflon tap, prevents that sample gas from leaking, and guarantees impermeability.
Described flexible seals is Teflon tap.
Described smart filtering element is 45 microns of filtering membranes, belongs to the second level and filters, and the effectively minute impurities in filtered sample gas, promotes filter effect.
Described coarse filtration element is copper mesh or stainless (steel) wire, the copper mesh that preferred flexible is good, and copper mesh is filled in draft tube, belongs to the first order and filters.
Described draft tube, escape pipe are hard four fluorine tube, easy to connect, are convenient to accurate connection simultaneously, prevent from coming off.
Principle of work and process:
When use, emulsion tube is connected to gas chromatograph entrance, draft tube is connected with gas production bag, first sample gas filters through coarse filtration element copper mesh, can filter larger solid impurity wherein, belong to single filter, then filter through 45 microns of filtering membranes of smart filtering element, filter minute impurities wherein, belong to cascade filtration.Filtered sample gas enters gas chromatograph analysis by escape pipe and emulsion tube.Guarantee to meet the desired purity of chromatographic column through the sample gas physical efficiency of two-stage filtration, instrument spectrogram baseline no longer drifts about, and goes out peak standard neat, has effectively improved accuracy and the precision of testing result.
Compared with prior art, the beneficial effect that the utility model has is:
1, this gas chromatograph sampling filtrator is by arranging two-stage filtration, make sample gas Impurity removal effective, gas purity is high, make up the defect of gas chromatograph n.s. filtrator, easy accessibility, effectively improve accuracy and the precision of testing result, and extended the serviceable life of chromatographic column.
2, by between smart filtering element and draft tube, escape pipe, flexible seals being set, guaranteed impermeability.
3, draft tube, escape pipe adopt hard four fluorine tube, easy to connect, are convenient to accurate connection simultaneously, prevent from coming off.
4, one-piece construction is simple, and cost is low, is convenient to safeguard.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
In figure: 1, draft tube; 2, coarse filtration element; 3, flexible seals; 4, smart filtering element; 5, escape pipe; 6, emulsion tube.
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the utility model is described further.
As shown in Figure 1, SP6800A type gas chromatograph sampling filtrator, comprises smart filtering element 4, and smart filtering element 4 is 45 microns of filtering membranes, effectively the minute impurities in filtered sample gas.Essence filtering element 4 inlet ends connect draft tube 1, are filled with coarse filtration element 2 in draft tube 1, and wherein coarse filtration element 2 is copper mesh or stainless (steel) wire, the copper mesh that preferred flexible is good, the larger solid impurity in can filtered sample gas.Coarse filtration element 2, smart filtering element 4 are respectively single filter, cascade filtration, composition two-stage filtration system.Essence filtering element 4 outlet sides connect escape pipe 5, and escape pipe 5 is connected with gas chromatograph entrance by emulsion tube 6.
Between essence filtering element 4 and draft tube 1, escape pipe 5, flexible seals 3 is all set, this flexible seals 3 can be Teflon tap or rubber strip etc., and preferred Teflon tap herein, to obtain more assembling and sealing effectiveness.
Draft tube 1, escape pipe 5 are hard four fluorine tube, and hard four fluorine tube is easy to connect, accurate, avoid coming off simultaneously.
The course of work:
When use, emulsion tube 6 is connected to gas chromatograph entrance, draft tube 5 is connected with gas production bag, first sample gas filters through coarse filtration element 2 copper mesh, can filter larger solid impurity wherein, then filter through 45 microns of filtering membranes of smart filtering element 4, filter minute impurities wherein.Filtered sample gas enters gas chromatograph analysis by escape pipe 5 and emulsion tube 6.
Claims (6)
1. a gas chromatograph sampling filtrator, is characterized in that: comprise smart filtering element (4), smart filtering element (4) inlet end connects draft tube (1), and coarse filtration element (2) is set in draft tube (1); Essence filtering element (4) outlet side connects escape pipe (5), and escape pipe (5) is connected with gas chromatograph entrance by emulsion tube (6).
2. gas chromatograph sampling filtrator according to claim 1, is characterized in that: between described smart filtering element (4) and draft tube (1), escape pipe (5), flexible seals (3) is all set.
3. gas chromatograph sampling filtrator according to claim 2, is characterized in that: described flexible seals (3) is Teflon tap.
4. gas chromatograph sampling filtrator according to claim 1, is characterized in that: described smart filtering element (4) is 45 microns of filtering membranes.
5. gas chromatograph sampling filtrator according to claim 1, is characterized in that: described coarse filtration element (2) is copper mesh, and copper mesh is filled in draft tube (1).
6. according to the gas chromatograph sampling filtrator described in claim 1～5 any one, it is characterized in that: described draft tube (1), escape pipe (5) are hard four fluorine tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320765457.2U CN203630097U (en) | 2013-11-26 | 2013-11-26 | Sampling filter of gas chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320765457.2U CN203630097U (en) | 2013-11-26 | 2013-11-26 | Sampling filter of gas chromatograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203630097U true CN203630097U (en) | 2014-06-04 |
Family
ID=50816561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320765457.2U Expired - Fee Related CN203630097U (en) | 2013-11-26 | 2013-11-26 | Sampling filter of gas chromatograph |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203630097U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113365725A (en) * | 2019-01-31 | 2021-09-07 | 制药流体股份有限公司 | Filter for chemical reactor |
-
2013
- 2013-11-26 CN CN201320765457.2U patent/CN203630097U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113365725A (en) * | 2019-01-31 | 2021-09-07 | 制药流体股份有限公司 | Filter for chemical reactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 |