CN203772814U - Device taking pipeline gas as carrier gas for chemical analyzer - Google Patents
Device taking pipeline gas as carrier gas for chemical analyzer Download PDFInfo
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- CN203772814U CN203772814U CN201420033966.0U CN201420033966U CN203772814U CN 203772814 U CN203772814 U CN 203772814U CN 201420033966 U CN201420033966 U CN 201420033966U CN 203772814 U CN203772814 U CN 203772814U
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- carrier gas
- pipeline
- gas
- chemical analysis
- tensimeter
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Abstract
The utility model discloses a device taking pipeline gas as carrier gas for a chemical analyzer. The device takes gas from a pipeline gas source as the carrier gas for the chemical analyzer, and the purity of the gas can meet a carrier gas requirement. The device comprises a pipeline carrier gas supply pipeline led out of a carrier gas source pipeline, wherein the pipeline carrier gas supply pipeline is connected with a purification device of the chemical analyzer, or a conventional bottled carrier gas supply pipe is connected in parallel with the pipeline carrier gas supply pipeline and then is connected with the purification device of the chemical analyzer. By the use of the current resources, the chemical analysis cost is reduced, the safety stability of operation is improved, and the device has high use benefits.
Description
Technical field
The utility model belongs to industrial gasses chemical analysis field.
Background technology
In gas chromatographic analysis, mobile phase is gas, is called carrier gas.The effect of carrier gas is to carry gaseous sample or the sample gas after gasification enters together chromatographic column and separates with certain flow velocity, bringing the each component after separated into detecting device again detects, finally flow out chromatographic system, emptying or collection, carrier gas only plays rolling action and does not participate in separation.
The high-purity gas (being called for short: bottled carrier gas) that the domestic laboratory for industrial gasses analysis all adopts gas cylinder to load conventionally, as argon gas, helium etc. are done carrier gas.Use bottled carrier gas mainly to have following defect:
The one, the container that loads carrier gas is high-pressure cylinder, and as high pressure argon gas steel cylinder pressure reaches 15MPa, safety requirements is higher.For eliminating safe hidden trouble, need to be divided into He Manping district of empty bottle district by national safety standard and deposit, and the operating personnel of analysis room must not with the gas cylinder Room that exists together; In the time using gas cylinder quantity more, steel cylinder takes up space larger, and deposit in the space that must meet safety standard in the outdoor searching of chemical analysis, therefore uses bottled carrier gas having relatively high expectations to parking space.
The 2nd, the purity of bottled gas is not quite identical, and the purity of every bottle all exists certain difference relatively, easily causes analysis deviation; In addition, steel cylinder cleans remaining trace impurity also can cause certain pollution to bottled gas, and then causes chromatographic pollution, easily damages chromatographic precision measurement element.
The 3rd, the operating process of changing gas cylinder is loaded down with trivial details; While changing gas cylinder, need repeatedly switch gas cylinder and reduction valve to get rid of the air in decompression valve pocket, complete connect gas connect after and instrument start before, also must carry out tightness leak test, if the leakage of carrier gas gas circuit can cause baseline wander and noise, and affect the sensitivity of discharge detector, and in Renewal process, also easily carry some impurity in addition and enter the air-channel system of chemical analysis instrument, cause instrument failure.
Utility model content
For above-mentioned problems of the prior art, the utility model provides a kind of device that pipeline gas is used as to chemical analysis instrument carrier gas.
The device that pipeline gas is used as chemical analysis instrument carrier gas by this kind is using pipeline gas as carrier gas source of the gas, be included in the suitable gas source interface (being generally pressure samples point) of the online selection of gas source pipe, draw a road pipeline carrier gas feeding pipe from this interface, this pipeline comprises that successively gas source pipe, the first tensimeter, the first stop valve, the first reduction valve, second tensimeter of series connection, the purification devices of chemical analysis instrument are positioned at pipeline end, also comprise the connecting tube between above-mentioned each parts; Described pipeline end can connect many chemical analysis instruments with parallel way.
In order to prevent that pipe network source of the gas from interrupting or fluctuating excessive, guarantee that carrier gas source of the gas is continual and steady, also can retain existing bottled carrier gas feeding pipe, this pipeline comprises carrier gas steel cylinder, the second stop valve, the 3rd tensimeter, second reduction valve of series connection successively, the 4th tensimeter, chemical analysis instrument is positioned at the end of pipeline, also comprises the connecting tube between described each parts.Pipeline between the 4th tensimeter of existing bottled carrier gas feeding pipe and chemical analysis instrument is disconnected, be connected to by threeway on the pipeline between the second tensimeter and the chemical analysis instrument of above-mentioned pipeline carrier gas feeding pipe, be parallel-connected on the purification devices of chemical analysis instrument with above-mentioned pipeline carrier gas feeding pipe; Existing bottled carrier gas feeding pipe is connected with instrument in parallel with described pipeline carrier gas feeding pipe, form the pipeline gas that has more security as the device of chemical analysis carrier gas, article two, carrier gas supply gas circuit can be switched mutually, guarantees that instrument has stable carrier gas supply all the time.
The utility model design philosophy is as follows:
If the gas product in production unit pipe network can reach the standard as carrier gas, can meet or exceed the purity requirement of carrier gas, ensure continuation and the pressure stability of source of the gas, can be using its pipeline gas as carrier gas source of the gas, replace steel cylinder carrier gas source of the gas.Described pipeline gas is applicable to any gas medium that can be used as chemical analysis instrument carrier gas as the device of chemical analysis instrument carrier gas in theory, in practice, conventionally use argon gas or helium as carrier gas, and be mainly used in the fields such as petrochemical industry, chemical industry and air separation.In principle, as long as the pipeline source of the gas purity of these production units reaches carrier gas requirement, be all applicable to said apparatus.
Adopt above-mentioned pipeline gas to there is following beneficial effect as the device of chemical analysis instrument carrier gas:
1, save the usage space of chemical analysis chamber, save the purchase cost of carrier gas steel cylinder.
2, reduced the potential safety hazard risk that gas cylinder is preserved and used.
3, eliminated because changing the instrument that bottled carrier gas causes and shut down situation, thereby avoided starting instrument operating mode that preheating etc. causes and occurring because shutting down rear instrument the phenomenon of fluctuation.
4, adopt described device to overcome the impact that in bottled carrier gas use, pressure constantly reduces, carrier gas air-flow and purity stability improve, and instrument operation stability improves a lot, and failure rate obviously reduces.
Brief description of the drawings
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Fig. 1 is the connection diagram of the utility model scheme one;
Fig. 2 is bottled carrier gas feeding pipe connection diagram;
Fig. 3 is the connection diagram of the utility model scheme two.
Wherein, 1: carrier gas gas source pipe; 2: the first tensimeters; 3: the first stop valves; 4: the first reduction valve; 5: the second tensimeters; 6: carrier gas steel cylinder; 7: the second stop valves; 8: the three tensimeters; 9: the second reduction valve; 10: the four tensimeters; 11: the purification devices (Ke Duotai) of chemical analysis instrument.
Embodiment
The bottled carrier gas and the pipeline carrier gas that in following embodiment, adopt are argon gas, and chemical analysis instrument is chromatograph, and the purification devices of chemical analysis instrument is chromatograph purifier.
As accompanying drawing 2 shows, the bottled carrier gas feeding pipe that belongs to prior art comprises carrier gas steel cylinder 6, the second stop valve 7, the 3rd tensimeter 8, second reduction valve 9 of series connection successively, the 4th tensimeter 10, chromatograph purifier 11 is positioned at the end of pipeline, also comprises the connecting tube between described each parts.Concrete operations mode is: in the time adopting steel cylinder supply carrier gas, open the second stop valve 7, when observing the 4th tensimeter 10 and the 3rd tensimeter 8, adjust the second reduction valve 9, the pressure value that ensures the 4th tensimeter 10 is stabilized in 0.6MPa, along with steel cylinder pressure in use procedure constantly reduces attention and adjust at any time the aperture of the second reduction valve 9.
In embodiment of the present utility model, external gas source is pipeline argon gas, and argon gas Chun Du≤99.999%, meets the requirement of carrier gas completely, and steady quality, and the pressure of pipe network argon gas remains on 1.5-2.2MPa.
Scheme one: as shown in Figure 1, this kind of pipeline gas comprises from the argon gas pipeline as external gas source and draws a road pipeline carrier gas feeding pipe as the device of chromatograph carrier gas, this pipeline carrier gas feeding pipe comprises gas source pipe 1, the first tensimeter 2, the first stop valve 3, the first reduction valve 4, second tensimeter 5 of series connection successively, chromatograph purifier 11 is positioned at the end of pipeline, also comprises the connecting tube between described each parts.The method of operating that the device that utilizes described pipeline gas to do carrier gas carries out carrier gas supply comprises:
1) after the installation of described pipeline carrier gas feeding pipe, blow down, ensure that in pipeline, inclusion-free pollutes;
2) after having blown down, slowly open the first stop valve 3, pipeline source of the gas 1 provides carrier gas, observe the first tensimeter 2 and the second tensimeter 5 is adjusted the first reduction valve 4 simultaneously, the pressure value that ensures the second tensimeter 5 is 0.6MPa, the about 40ml/min of interior flow velocity that installs pipes now, carrier gas is sent to chromatograph purifier 11;
3) progressively open large until standard-sized sheet the first stop valve 3 is suitably adjusted the first reduction valve 4 according to ductwork pressure, ensure by adjusting the first reduction valve 4 that all the time the pressure value of the second tensimeter 5 is stabilized in 0.6MPa;
4) conventionally the pipe network under gas source pipe 1 is in continual and steady state, and ductwork pressure fluctuating range is less, therefore does not substantially need to adjust the first reduction valve 4 when steady operation.
Scheme two: as Fig. 3 shows, retain original bottled carrier gas feeding pipe, after the 4th tensimeter 10 and the connecting tube of chromatograph purifier 11 are disconnected, be connected on the pipeline after the second tensimeter 5 by threeway, described pipeline carrier gas feeding pipe and bottled carrier gas feeding pipe are parallel-connected on chromatograph purifier 11.When normal work, using bottled carrier gas as bailout gas, now close the second stop valve 7 and cut off carrier gas steel cylinder 6; In the time that pipe network or external gas source 1 to the pipeline between chromatograph purifier 11 break down, can use spare cylinder carrier gas, now close the first stop valve 3, open the second stop valve 7, supply with method of operating by bottled carrier gas and operate.
In above-mentioned two embodiment, utilize pipeline argon gas as carrier gas source of the gas, use after unit feeding carrier gas described in the utility model, chromatograph baseline is steady, and purity is stable, and it is also evenly regular that analytic sample goes out peak, meets the requirement of instrument completely; And solved the security hidden trouble that on-site chemical chamber insufficient space causes, made full use of produced on-site resource simultaneously, saved the cost of buying bottled carrier gas, omit or reduced change bottle loaded down with trivial details step and number of times.
Claims (2)
1. pipeline gas, as a device for chemical analysis instrument carrier gas, is characterized in that: described device comprises the purification devices (11) from draw a road pipeline carrier gas feeding pipe and chemical analysis instrument as the pipeline of carrier gas source of the gas; Described pipeline carrier gas feeding pipe comprises gas source pipe (1), the first tensimeter (2), the first stop valve (3), the first reduction valve (4), second tensimeter (5) of pipeline series connection successively, and purification devices (11) pipeline of chemical analysis instrument is connected in after the second tensimeter (5).
2. pipeline gas according to claim 1, as the device of chemical analysis instrument carrier gas, is characterized in that: between the purification devices (11) of described pipeline carrier gas feeding pipe the second tensimeter (5) and chemical analysis instrument, be connected a bottled carrier gas feeding pipe in road by threeway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420033966.0U CN203772814U (en) | 2014-01-21 | 2014-01-21 | Device taking pipeline gas as carrier gas for chemical analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420033966.0U CN203772814U (en) | 2014-01-21 | 2014-01-21 | Device taking pipeline gas as carrier gas for chemical analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203772814U true CN203772814U (en) | 2014-08-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420033966.0U Expired - Fee Related CN203772814U (en) | 2014-01-21 | 2014-01-21 | Device taking pipeline gas as carrier gas for chemical analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203772814U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223152A (en) * | 2015-09-18 | 2016-01-06 | 苏州萨伯工业设计有限公司 | A kind of oxygen nitrogen analysis detection method |
| CN105605418A (en) * | 2015-12-17 | 2016-05-25 | 安徽华盛科技控股股份有限公司 | Central gas supply system for intelligent CIT laboratory |
-
2014
- 2014-01-21 CN CN201420033966.0U patent/CN203772814U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223152A (en) * | 2015-09-18 | 2016-01-06 | 苏州萨伯工业设计有限公司 | A kind of oxygen nitrogen analysis detection method |
| CN105605418A (en) * | 2015-12-17 | 2016-05-25 | 安徽华盛科技控股股份有限公司 | Central gas supply system for intelligent CIT laboratory |
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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 |
Granted publication date: 20140813 Termination date: 20220121 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |