CN109100438A - A kind of gas sensor with gas chromatographic analysis function - Google Patents
A kind of gas sensor with gas chromatographic analysis function Download PDFInfo
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- CN109100438A CN109100438A CN201810837195.3A CN201810837195A CN109100438A CN 109100438 A CN109100438 A CN 109100438A CN 201810837195 A CN201810837195 A CN 201810837195A CN 109100438 A CN109100438 A CN 109100438A
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- gas
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- chromatographic analysis
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
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Abstract
A kind of gas sensor with gas chromatographic analysis function, it is related to field of gas detection, including the degasser for separating gas in drilling fluid, the gas-detecting device of gas chromatographic analysis is connect and is used to carry out with degasser, and for driving the gas in degasser to enter the gas circuit driving device of gas-detecting device, the degasser includes that the gas-liquid separation chamber formed is closed by semi-permeable membrane, the gas-detecting device includes hollow optic fibre and infrared light supply and length scanning detector positioned at hollow optic fibre end, it is connected to the gas-liquid separation chamber by communicating pipe inside the hollow optic fibre.Gas-liquid separation and gas chromatographic analysis can be realized with hollow optic fibre since the sensor only passes through semi-permeable membrane, middle degasser, gas chromatograph etc. compared with the prior art, its compact, stabilised efficiency, so it is light-weight, carry and it is easy for installation, to reduce the cost of operation.
Description
Technical field
The present invention relates to field of gas detection, in particular to a kind of gas sensor with gas chromatographic analysis function.
Background technique
The main task of oil-gas exploration first is that discovery oil gas.By to point for above returning gas entrained in drilling fluid
Analysis, obtains the content of the hydrocarbon component and non-hydrocarbon gases component, carries out the identification of reservoir hydrocarbons accordingly.Currently, gas chromatograph is
Most widely used gas detecting instrument in engineer operation.It can carry out the gas above returned in the taken formation fluid of drilling fluid
Continuous measurement provides the content point of the limited gas such as hydro carbons and non-hydrocarbons component characteristics sample in tens seconds or a few minutes
Analysis helps Field Force to find oil bearing reservoir position in time.
The device that gas in drilling fluid is separated is degasser.Then these are separated by gas chromatograph again
Gas out carries out analysis test.
Existing degasser technology is generally adopted by stirring degassing, needs heavy-duty motor and a gas collecting jar with ground-on cover plate plus peace
Dress bracket etc. causes bulky and heavy, and the operations such as mounting and adjusting cleaning are extremely difficult, are that one of operating personnel is huge negative
Load, it is more demanding to field resources.
Meanwhile in the prior art, the larger auxiliary device of used gas chromatograph all volumes is more, it is necessary to be arranged in instrument
In room, it is connected by nearly hundred meters of sample gas transfer lines with above-mentioned drilling fluid degasser.Exposed gas pipeline is past in winter
It is past to need to heat.The time lag that this long-distance sand transport causes whole gas to be surveyed, it cannot reflect formation fluid information in time.
Existing gas chromatograph is generally made of insulating box, chromatographic column, analysis gas circuit, detector, control panel etc..Drilling well
Liquid degasser is responsible for the gas in mud to detach, and above-mentioned remote conveying is sent to chromatograph by chromatographic column each single group
Point gas separates, and then each component enters detector one by one and is converted into electric signal for analysis, causes detection cycle long.
It is more that testing principle requires combustion-supporting gas, combustible gas, carrier gas etc. to result in ancillary equipment, such as air compressor machine, hydrogen generator, nitrogen hair
Raw device etc. occupies the space of a large amount of preciousness, increases cost.
Have above said content it is found that existing degasser and gas chromatographic analysis equipment for working site peace
Dress, maintenance and it is practical have higher requirement, not only occupy the space of inner preciousness, while also increasing operating cost.
Summary of the invention
It is a kind of with gas chromatographic analysis function in view of the deficiencies of the prior art, the present invention intends to provide
Gas sensor, the sensor occupy little space, and using simplicity, can reduce operating cost.
In order to achieve the above technical purposes, the present invention provides following technical schemes:
A kind of gas sensor with gas chromatographic analysis function, including for separate the degasser of gas in drilling fluid,
The gas-detecting device of gas chromatographic analysis is connect and is used to carry out with degasser and for driving the gas in degasser
Body enters the gas circuit driving device of gas-detecting device, and the degasser includes that the gas-liquid separation formed is closed by semi-permeable membrane
Chamber, the gas-detecting device include hollow optic fibre and infrared light supply and length scanning detection positioned at hollow optic fibre end
Device, the hollow optic fibre inside are connected to the gas-liquid separation chamber by communicating pipe.
By using above-mentioned technical proposal, when needing to detect oil gas, the gas-liquid separation that is first composed semi-permeable membrane
Chamber is sunk in drilling fluid, so that the gas in drilling fluid is entered in gas-liquid separation chamber by semi-permeable membrane, gas-liquid separation chamber
Interior gas is shifted into hollow optic fibre under the action of gas circuit driving device, is exported infrared light by infrared light supply, is entered
Gas in hollow optic fibre absorbs infrared light, and each component in fiber-optic fiber gas is different in absorptivity of each wavelength to light,
The content of each component in sample gas can be obtained by the absorptivity that length scanning detector detects each wavelength.Gas absorption follows
Beer-Lambert (Beer-Lalnbert) law.Gas-liquid can be realized and divide since the sensor only passes through semi-permeable membrane and hollow optic fibre
From and gas chromatographic analysis, compared with the prior art in degasser, gas chromatograph etc., compact, stabilised efficiency, into
And it is light-weight, carry and it is easy for installation, to reduce the cost of operation.
As an improvement of the present invention, sample drying device is provided between the gas-liquid separation chamber and the hollow optic fibre.
By using above-mentioned technical proposal, since the gas entered in gas-liquid separation chamber by semi-permeable membrane can adulterate
Moisture, these moisture influence whether transmission of the gas in hollow optic fibre when passing through hollow optic fibre, while also influencing whether gas
Body detection device can realize the drying to the gas entered in hollow optic fibre to the detection effect of gas, sample drying device,
To improve gas-detecting device to the detection effect of gas.
As an improvement of the present invention, the sample drying device includes the drying inner tube turned on communicating pipe and package
The drying outer tube of dry inner tube forms dry place between dry inner tube and dry outer tube, and the dry outer tube both ends connect respectively
It is connected to dry air inlet pipe and dry escape pipe, the dry air inlet pipe is connected with air inlet drying device, and the dry escape pipe connects
The gas circuit driving device is connect, the dry inner tube is set as soakaway trench.
By using above-mentioned technical proposal, since dry inner tube is set as soakaway trench, the steam in dry inner tube can pass through
Dry inner tube is penetrated into the tube wall of dry inner tube or is directly entered between dry inner tube and dry outer tube, when extraneous gas passes through
Dry air inlet pipe and dry escape pipe are told when flowing through between dry inner tube and dry outer tube, it can be achieved that will dry inner tube and dry
The effect of steam blowout between dry inner tube and dry outer tube, thus reduce the steam in the gas by dry inner tube, it is real
The drying for treating detection gas is showed.
As an improvement of the present invention, the gas circuit driving device include the diaphragm pump being arranged on the dry escape pipe,
The connecting tube of the tee tube and connection tee tube and the gas-liquid separation chamber that are connect with the dry escape pipe end.
By using above-mentioned technical proposal, by diaphragm pump setting in dry escape pipe, not only realize will by it is dry into
The gas that tracheae enters sample drying device is sucked out, and the gas being partially sucked out is transported to gas-liquid point simultaneously also by connecting tube
From chamber, so that the gas in gas-liquid separation chamber is blown into hollow optic fibre, the driving to gas circuit in sensor, threeway are realized
The setting of pipe realizes the discharge to excessive gas.
As an improvement of the present invention, the connecting tube is provided with mass flow controller.
By using above-mentioned technical proposal, the setting of mass flow controller realizes the tune to gas flow in connecting tube
Section, so that the ambient atmos flow for entering gas-liquid separation chamber is adjusted.
As an improvement of the present invention, the tee tube another port is connected with vapour lock.
As an improvement of the present invention, the mid-infrared light source that the infrared light supply is 2.0-12 microns.
As an improvement of the present invention, the installation condition of the hollow optic fibre is of a straight line type.
As an improvement of the present invention, the position that the hollow optic fibre is connect with the length scanning detector is provided with air inlet
Notch is simultaneously enclosed with inlet seal cover, and the position that hollow-core fiber is connect with the infrared light supply is provided with outlet notch and is enclosed with
Outlet seal closure, the outlet seal closure are connected with flue gas leading, the communicating pipe are connected to inlet seal cover.
By using above-mentioned technical proposal, inlet seal cover realizes hollow optic fibre and closely connect with length scanning detector
While, it enables to enter and surveys the sample gas of light seal closure and enter in hollow optic fibre, while outlet seal closure is set
Set realize hollow optic fibre and infrared light supply it is close-connected simultaneously, enable the gas in hollow optic fibre to flow out hollow light
It is fine.
As an improvement of the present invention, the hollow-core fiber is externally provided with straight tube shell, and the gas-detecting device and gas circuit are driven
Dynamic device is externally provided with interface shells, and the degasser is externally provided with degassing shell, and the interface shells, straight tube shell and degassing are outer
Shell is sequentially connected composition dumbbell shape shell.
By using above-mentioned technical proposal, since interface shells, straight tube shell and degassing shell are sequentially connected composition dumbbell
Shell body, when needing to carry out drilling fluid detection, it is only necessary to hold or pass through the fixed mobile straight tube shell casing of mechanical arm and realize
Movement to sensor entirety, for complicated working site, dumbbell shape structure is not only installed, is easy to carry, accounts for simultaneously
Site space is smaller, facilitates the operation at scene.
In conclusion the application has the following advantages:
One, stirring degassing, equipment small volume and less weight, stabilised efficiency are replaced using semi-permeable membrane.Whole equipment is small and exquisite, and ancillary equipment is few,
Space length is short between degassing (i.e. acquirement sample) and test sample, accelerates detection response speed, it is dirty to decrease sample
Dye or rotten possibility.The quality of sample gas is fundamentally improved, more accurately represent formation gas to be detected more from
And meet the needs of engineering；
Two, hollow optic fibre reduces gaseous sample demand as gas chamber, and renewal speed is accelerated；The reduction of demand is so that more
The use of the semi-permeable membrane degassing method of science is possibly realized；Hollow optic fibre reduces light source/collimation/detector requirement,
The complexity for significantly simplifying equipment, reduces costs；And the outer dimension of whole equipment is greatly decreased.
Detailed description of the invention
Fig. 1 is the principle assumption diagram of the gas sensor with gas chromatographic analysis function.
Appended drawing reference: 1, interface shells；11, gas-detecting device；111, length scanning detector；12, control panel；2, straight
Pipe shell；21, hollow optic fibre；211, air inlet notch；212, outlet notch；213, inlet seal cover；214, outlet seal closure；
2141, flue gas leading；22, infrared light supply；23, sample drying device；231, dry outer tube；232, dry inner tube；233, it dries out
Tracheae；234, dry air inlet pipe；2341, dry inlet duct；3, deaerate shell；31, gas-liquid separation chamber；311, communicating pipe；4,
Diaphragm pump；5, tee tube；6, vapour lock；7, connecting tube；8, mass flow controller.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail, wherein the identical appended drawing reference of identical components
It indicates.It should be noted that word "front", "rear" used in the following description, "left", "right", "up" and "down", " bottom surface " and
" top surface " refers to that the direction in attached drawing, word "inner" and "outside" are referred respectively to towards or away from geometric center of specific component
Direction.
A kind of gas sensor with gas chromatographic analysis function, as shown in Figure 1, including for separating gas in drilling fluid
The degasser of body, the gas-detecting device 11 for being connect with degasser and being used to carry out gas chromatographic analysis and for driving
Gas in dynamic degasser enters the gas circuit driving device of gas-detecting device 11.Wherein, degasser is set as by oil gas
Gas-liquid separation chamber 31 made of semi-permeable membrane closure is separated, gas-detecting device 11 is including hollow optic fibre 21 and is located at hollow optic fibre
The infrared light supply 22 and length scanning detector 111 at 21 both ends, hollow optic fibre 21 are connected to gas-liquid separation chamber 31 by communicating pipe 311
Inside.Oil-gas Separation semi-permeable membrane is preferably PDMS membrane.
As shown in Figure 1, being provided with sample drying device 23 between gas-liquid separation chamber 31 and hollow optic fibre 21.Sample drying dress
Setting 23 includes the drying outer tubes 231 for turning on drying inner tube 232 on communicating pipe 311 and wrapping up dry inner tube 232, it is dry in
Dry place is formed between pipe 232 and dry outer tube 231, dry 231 both ends of outer tube are connected separately with dry air inlet pipe 234 and do
Dry escape pipe 233.Wherein, dry air inlet pipe 234 is connected with air inlet drying device 2341, dry 2341 company of being set as of inlet duct
The silica gel cylinder in dry air inlet pipe 234 is connect, is filled with granulated dried agent in silica gel cylinder；Dry inner tube 232 is set as seeping water
Pipe, preferably NAFION pipe.When external air passes through dry place as purge gass high speed, dry inner tube 232 can be inhaled
The moisture of receipts air-dries, to realize the drying to the gas by dry inner tube 232.
As shown in Figure 1, above-mentioned gas circuit driving device include the diaphragm pump 4 being arranged on dry escape pipe 233, with dry out
The tee tube 5 of 233 end of tracheae connection and the connecting tube 7 for being connected to tee tube 5 and the gas-liquid separation chamber 31, tee tube 5
The other end is connected with vapour lock 6.When diaphragm pump 4 works, can be pumped into using outside air as air inlet drying device is purged air through
Into dry place, gas-liquid separation chamber 31, and and gas-liquid separation are pumped to by tee tube 5 after by dry place
Gas mixing in chamber 31 is sample gas.The setting of diaphragm pump 4 not only realizes the gas circuit driving of sample drying device 23, simultaneously
The gas circuit driving in gas-liquid separation chamber 31 is also achieved, so that the sample gas in gas-liquid separation chamber 31 is blown into hollow optic fibre 21
It is interior, to realize the multi-purpose effect of a pump.
Further connecting tube 7 is provided with mass flow controller 8, and mass flow controller 8 can be realized to passing through connection
The regulation and control of the gas flow of pipe 7, so that the rate for being charged the purge gass of gas-liquid separation chamber 31 is controlled and is adjusted,
Controlling the flow in connecting tube 7 preferably by mass flow controller 8 herein is 100ml/min.
As shown in Figure 1, the installation condition that hollow optic fibre 21 is includes but is not limited to linear type or coil shape, herein preferably
For linear type.The top of hollow optic fibre 21 is fixedly connected with length scanning detector 111, and the bottom end of hollow optic fibre 21 connects infrared light
Source 22.The position that hollow optic fibre 21 is connect with length scanning detector 111 is provided with air inlet notch 211 and is enclosed with inlet seal
Cover 213, the position that hollow-core fiber is connect with infrared light supply 22 is provided with outlet notch 212 and is enclosed with outlet seal closure 214, out
Airtight sealing cover is connected with flue gas leading 2141, communicating pipe 311 is connected to inlet seal cover 213.Inlet seal cover 213 realizes hollow light
Fibre 21 is close-connected with length scanning detector 111 meanwhile, it is capable to enter the sample gas entrance for surveying light seal closure
Into hollow optic fibre 21, while the setting of outlet seal closure 214 realizes hollow optic fibre 21 and infrared light supply 22 is close-connected
Meanwhile the gas in hollow optic fibre 21 being enabled to flow out hollow optic fibre 21.
Infrared light supply 22 is preferably 2.0-12 microns of mid-infrared light source.
When needing to detect oil gas, the gas-liquid separation chamber 31 that semi-permeable membrane is composed is sunk in drilling fluid first, thus
So that the gas in drilling fluid is entered in gas-liquid separation chamber 31 by semi-permeable membrane, the gas in gas-liquid separation chamber 31 drives in gas circuit
It is shifted into hollow optic fibre 21 under the action of dynamic device, infrared light is exported by infrared light supply 22, by the sample in hollow optic fibre
Product aspiration, each component in sample gas is different in absorptivity of each wavelength to light, detects each wave by wavelength detector
The content of each component in sample gas can be obtained in long absorptivity.To be realized by gas-detecting device 11 to the detection of wavelength
Analysis to gas component.
Further, hollow-core fiber is externally provided with straight tube shell 2, and gas-detecting device 11 and diaphragm pump 4 are externally provided with outside interface
Shell 1, gas-liquid separation chamber 31 made of Oil-gas Separation semi-permeable membrane is closed are externally provided with degassing shell 3, interface shells 1,2 and of straight tube shell
Degassing shell 3 is sequentially connected composition dumbbell shape shell.In order to guarantee the fastness that connect with straight tube shell 2 of shell 3 that deaerates, connect
Communicating pipe 311 it is enclosed in the connecting tube 7 to deaerate between shell 3 and straight tube shell 2 and protection shell, herein, protects shell
Including but not limited to hard single-piece protective enclosure, hard separate type protection shell and soft protective layer.Above-mentioned infrared light
Source 22 and gas-detecting device 11 are powered by the control panel 12 being arranged in interface shells 1；Above-mentioned flue gas leading 2141 by
Interface shells 1 stretch out hull outside.
The present invention does not need chromatographic column and carries out physical separation but complete more gas components only by scan control
Detection improves the timeliness of hydrocarbon stratum detection, and greatly simplified apparatus structure so that detection can be completed immediately,
So that the outer dimension of whole equipment is greatly decreased；Multicomponent reduces the quantity of detection device by a detector detection.
The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；Although referring to preferred embodiment pair
The present invention is described in detail, but it should be understood by those ordinary skilled in the art that: to specific implementation of the invention
Mode is modified or some technical features can be equivalently replaced, without departing from the spirit of the technical scheme of the invention,
It should cover within the scope of the technical scheme claimed by the invention.
Claims (8)
1. a kind of gas sensor with gas chromatographic analysis function, which is characterized in that including for separating gas in drilling fluid
It the degasser of body, the gas-detecting device for being connect with degasser and being used to carry out gas chromatographic analysis (11) and is used for
Gas in driving degasser enters the gas circuit driving device of gas-detecting device (11), and the degasser includes by semi-transparent
Film is closed the gas-liquid separation chamber to be formed (31), the gas-detecting device (11) include hollow optic fibre (21) and be located at hollow light
The infrared light supply (22) and length scanning detector (111) of fine (21) end, hollow optic fibre (21) inside and the gas-liquid
Disengagement chamber (31) is connected to by communicating pipe (311).
2. a kind of gas sensor with gas chromatographic analysis function according to claim 1, it is characterised in that: described
Sample drying device (23) are provided between gas-liquid separation chamber (31) and the hollow optic fibre (21).
3. a kind of gas sensor with gas chromatographic analysis function according to claim 2, it is characterised in that: described
Sample drying device (23) includes the drying inner tube (232) turned on communicating pipe (311) and wraps up dry inner tube (232)
Dry outer tube (231) form dry place, the dry outer tube (231) between dry inner tube (232) and dry outer tube (231)
Both ends are connected separately with dry air inlet pipe (234) and drying escape pipe (233), and the dry air inlet pipe (234) is connected with air inlet
Drying device, the dry escape pipe (233) connect the gas circuit driving device, and the dry inner tube (232) is set as seeping water
Pipe.
4. a kind of gas sensor with gas chromatographic analysis function according to claim 3, it is characterised in that: described
Gas circuit driving device includes the diaphragm pump (4) being arranged on the dry escape pipe (233) and the dry escape pipe (233)
The tee tube (5) of end connection and the connecting tube (7) for being connected to tee tube (5) and the gas-liquid separation chamber (31).
5. a kind of gas sensor with gas chromatographic analysis function according to claim 4, it is characterised in that: described
Connecting tube (7) is provided with mass flow controller (8).
6. a kind of gas sensor with gas chromatographic analysis function according to claim 1, it is characterised in that: described
The installation condition of hollow optic fibre (21) is of a straight line type.
7. a kind of gas sensor with gas chromatographic analysis function according to claim 1, it is characterised in that: described
The position that hollow optic fibre (21) is connect with the length scanning detector (111) be provided with air inlet notch (211) and be enclosed with into
Airtight sealing cover (213), the position that hollow-core fiber is connect with the infrared light supply (22) are provided with outlet notch (212) and are enclosed with
Outlet seal closure (214), the outlet seal closure are connected with flue gas leading, and the communicating pipe (311) is connected to inlet seal cover
(213)。
8. a kind of gas sensor with gas chromatographic analysis function described in -7 any one according to claim 1, special
Sign is: the hollow-core fiber is externally provided with straight tube shell (2), and the gas-detecting device (11) and gas circuit driving device are externally provided with
Interface shells (1), the degasser are externally provided with degassing shell (3), and the interface shells (1), straight tube shell (2) and degassing are outer
Shell (3) is sequentially connected composition dumbbell shape shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810837195.3A CN109100438A (en) | 2018-07-26 | 2018-07-26 | A kind of gas sensor with gas chromatographic analysis function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810837195.3A CN109100438A (en) | 2018-07-26 | 2018-07-26 | A kind of gas sensor with gas chromatographic analysis function |
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| Publication Number | Publication Date |
|---|---|
| CN109100438A true CN109100438A (en) | 2018-12-28 |
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ID=64847559
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810837195.3A Pending CN109100438A (en) | 2018-07-26 | 2018-07-26 | A kind of gas sensor with gas chromatographic analysis function |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114018843A (en) * | 2022-01-05 | 2022-02-08 | 北京新煜达石油勘探开发有限公司 | Method, device, electronic equipment and medium for evaluating formation hydrocarbon source physical property based on spectral data |
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Application publication date: 20181228 |