CN106178854B - A kind of drying device and drying means of gas detection logging sample gas - Google Patents
A kind of drying device and drying means of gas detection logging sample gas Download PDFInfo
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- CN106178854B CN106178854B CN201610823551.7A CN201610823551A CN106178854B CN 106178854 B CN106178854 B CN 106178854B CN 201610823551 A CN201610823551 A CN 201610823551A CN 106178854 B CN106178854 B CN 106178854B
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- 238000001035 drying Methods 0.000 title claims abstract description 123
- 238000001514 detection method Methods 0.000 title claims abstract description 34
- 229920000557 Nafion® Polymers 0.000 claims abstract description 81
- 238000010926 purge Methods 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 13
- 239000002274 desiccant Substances 0.000 claims description 12
- 238000005070 sampling Methods 0.000 claims description 7
- 238000004868 gas analysis Methods 0.000 claims description 6
- 239000000284 extract Substances 0.000 claims description 5
- 239000004065 semiconductor Substances 0.000 claims description 5
- 238000005253 cladding Methods 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 230000002572 peristaltic effect Effects 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims 1
- 239000006227 byproduct Substances 0.000 claims 1
- 239000000047 product Substances 0.000 claims 1
- 230000002000 scavenging effect Effects 0.000 claims 1
- 239000004215 Carbon black (E152) Substances 0.000 abstract description 8
- 229930195733 hydrocarbon Natural products 0.000 abstract description 8
- 150000002430 hydrocarbons Chemical class 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 7
- 238000005553 drilling Methods 0.000 description 6
- 238000002203 pretreatment Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 206010013786 Dry skin Diseases 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
- E21B21/067—Separating gases from drilling fluids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The present invention relates to the drying devices and drying means of a kind of gas detection logging sample gas, using the various concentration of the tube wall two sides gas moisture pressure of Nafion inner tube as driving force, infiltrate into the hydrone in sample gas outside Nafion inner tube by tube wall, and utilize the drying purge gas of the negative pressure blow device continuous-stable of pipe formation outside, convection current is formed with the sample gas in Nafion inner tube, the vapor outside Nafion inner tube will be penetrated into and be discharged by purging by negative pressure blow device, realize and the dry of sample gas is removed water.The characteristics of the present invention is based on the water removals of Nafion drying tube, structure is simple, low in cost, applied widely, rate of drying is fast, reliable performance, and the hydrocarbon component to be checked in sample gas is unaffected, and the online lossless dry water removal that sample gas is sampled to tiny structure (negative pressure≤0.02 MPa) may be implemented.
Description
Technical field
The present invention relates to a kind of sample gas drying device of oil log gas analysis system and drying means, particularly relate to
A kind of continuous online lossless drying device and drying means of the sample gas suitable for tiny structure sampling.
Background technique
Online gas detection logging is the important ring during oil exploration, by returning drilling fluid institute in drilling process
The on-line analysis of the formation gas of carrying can provide the oil and gas index parameter on each drilling stratum quickly, in time, be the reality on stratum
When evaluation reliable reference frame is provided.It has weight to the Oil-gas exploration evaluation of live oil and gas development, especially early stage
Want meaning.
During gas detection logging, need to carry out the drilling fluid returned on-line degassing in drilling well to extract sample gas therein.
In this course, it is inevitably mixed into a large amount of vapor in sample gas, is surveyed so that gas be interfered to survey as a result, even influencing gas
The performance of instrument.Therefore it is dry generally pre-treatment to be carried out to the sample gas of on-line period.In addition, to avoid the water in sample gas from steaming
Gas is because pressure change liquefies, the dry tiny structure (negative pressure that would be normally located at before sample pump of the pre-treatment of sample gas
≤ 0.02 MPa) suction stage, mud logging unit is pumped into using sampling pump and positive pressure after sample gas has been dried.
Well logging gas is surveyed common pre-treatment drying and is had using calcium chloride drier and using semiconductor refrigerating dry two at present
Kind method.But all different degrees of there are disadvantages, influence the accuracy of gas detection logging.Wherein, use calcium chloride drier can be with
The moisture in sample gas is effectively removed, but must often replace desiccant.If the desiccant of water suction dampness is replaced not in time, pole
Sample line easy to pollute, or even cause the blocking of gas sample pipeline.It using semiconductor refrigerating drying is made wet by cryogenic refrigeration
Moisture in profit sample gas is removed water by the mode of condensation liquefaction.But the heavy constituent in sample gas, such as C5, even C6~C8 hydrocarbon
Component is influenced by its own boiling point, also can partially or completely condensation liquefaction, and then the authenticity of influence gas detection logging.
Summary of the invention
The purpose of the present invention is to provide the drying devices and drying means of a kind of gas detection logging sample gas, are based on Nafion
The characteristics of drying tube removes water, structure is simple, and low in cost, applied widely, rate of drying is fast, reliable performance, and in sample gas
The hydrocarbon component to be checked it is unaffected, the online lossless dry water removal that sample gas is sampled to tiny structure may be implemented.
In order to achieve the above object, the invention is realized by the following technical scheme: a kind of drying of gas detection logging sample gas
Device, connection are arranged in the sample gas pipeline of negative-pressure ward；Include: Nafion drying tube, You Yigen outer tube and setting exist
At least one Nafion inner tube composition in the outer tube, damp and hot sample gas are inputted Nafion inner tube by inlet end and are removed online
Water is dry, using the various concentration of tube wall two sides gas moisture pressure as driving force, the hydrone in sample gas is made to pass through tube wall
It infiltrates into outside Nafion inner tube, and drying sample gas is exported by outlet side；Dry gas source, is connected to outer tube, and close to Nafion
The outlet side of inner tube provides dry source purge gas；Negative pressure blow device is connected to setting with outer tube, and close to Nafion inner tube
Inlet end, extract the source purge gas that dry gas source provides, make it with steady pressure and flow by outer tube, and in Nafion
Sample gas in pipe forms convection current, will penetrate into the vapor outside Nafion inner tube and is arranged by purging by negative pressure blow device
Out.
The outer tube of the Nafion drying tube is made of plastics or metal material；The Nafion drying tube
Nafion inner tube is linear or U-shaped or O shape or S-shaped.
The drying device of the gas detection logging sample gas also includes: dry pipe heating device, and cladding setting exists
The outside of the outer tube of Nafion drying tube carries out temperature control heating to Nafion drying tube；The dry heat device passes through PTC
Self limiting temperature mode or pid control mode carry out temperature control, heat to Nafion drying tube；The dry heat device
Nafion drying tube is heated using heat exchange pattern or thermal convection or heat radiation mode.
The negative pressure blow device includes: the first connecting tube, and one end connects outer tube, and close to the air inlet of Nafion inner tube
End, the other end connect atmosphere；Aspiration pump is arranged in the first connecting tube, the source purge gas that dry gas source provides is extracted, in outer tube
The interior negative pressure purge stream for forming continuous-stable, and the pressure of the purge stream is less than the pressure of sample gas；Vapour lock, connection setting
Between dry gas source and outer tube.
The aspiration pump of the negative pressure blow device is using diaphragm pump or peristaltic pump or plunger pump.
The dew point for the source purge gas that the drying gas source provides is lower than the dew point of sample gas.
The drying gas source is using dry instrument wind or external desiccant or external semiconductor refrigerating drier.
The drying gas source includes: the second connecting tube, and one end connects outer tube, and close to the outlet side of Nafion inner tube；
Two position three-way valve, first end connect the other end of the second connecting tube by vapour lock；First drying cylinder, inside filling are renewable dry
Drying prescription, one end connects atmosphere or dry instrument wind, the other end pass through the second end of piping connection two position three-way valve；Second is dry
Renewable desiccant is filled in cylinder, inside, and one end connects atmosphere or dry instrument wind, the other end pass through piping connection two position three-way valve
Third end；The two position three-way valve is manually or automatically to switch to connect between the first drying cylinder and the second drying cylinder
It is logical.
The present invention also provides a kind of drying means of gas detection logging sample gas, are realized using above-mentioned drying device, utilize
The various concentration of the tube wall two sides gas moisture pressure of Nafion inner tube makes the hydrone in sample gas pass through tube wall as driving force
It infiltrates into outside Nafion inner tube, and utilizes the drying purge gas of the negative pressure blow device continuous-stable of pipe formation outside, with
Sample gas in Nafion inner tube forms convection current, will penetrate into the vapor outside Nafion inner tube by purging and purges dress by negative pressure
Place's discharge is set, realizes and the dry of sample gas is removed water.
The drying means is suitable for oil exploration gas detection logging scene, for negative pressure≤0.02MPa tiny structure
The sample gas of sampling carries out continuous online lossless water removal drying；Or it is suitable for various continuous on-line gas analysis scenes, it uses
Continuous online lossless water removal drying is carried out in the sample gas sampled to negative pressure≤0.02MPa tiny structure.
In conclusion the drying device and drying means of gas detection logging sample gas provided by the present invention, are based on Nafion
The characteristics of drying tube removes water, structure is simple, and low in cost, applied widely, rate of drying is fast, reliable performance, and in sample gas
The hydrocarbon component to be checked it is unaffected, the online lossless dry water removal for sampling sample gas to tiny structure may be implemented, be suitable for stone
Exploration activity gas detection logging scene or the dry field of the various pre-treatments for needing on-line gas analysis, especially for equipped with perseverance
Warm constant flow degasser and mating heating sample line carry out high boiling hydrocarbon component (such as C1~C8 gas surveys analysis) gas detection logging
Occasion.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the drying device of the gas detection logging sample gas in the present invention；
Fig. 2 is the structural schematic diagram of the drying gas source in the present invention.
Specific embodiment
The present invention is done and is further explained by the way that a preferable specific embodiment is described in detail below in conjunction with Fig. 1 and Fig. 2
It states.
As shown in Figure 1, being the drying device of gas detection logging sample gas provided by the present invention, connection is arranged in negative-pressure ward
Sample gas pipeline in；Include: Nafion drying tube, You Yigen outer tube 12 and at least one being arranged in the outer tube 12
Nafion inner tube 11 forms, and damp and hot sample gas inputs Nafion inner tube 11 simultaneously by inlet end according to the solid arrow direction in Fig. 1
Carrying out online water removal drying makes the moisture in sample gas using the various concentration of tube wall two sides gas moisture pressure as driving force
Son is infiltrated into outside Nafion inner tube 11 by tube wall, and exports drying sample gas by outlet side；Dry gas source 4, connects with outer tube 12
It is logical, and close to the outlet side of Nafion inner tube 11, dry source purge gas is provided；Negative pressure blow device is connected to outer tube 12 and sets
It sets, and close to the inlet end of Nafion inner tube 11, extracts the source purge gas that dry gas source 4 provides, make it with steady pressure and stream
Amount forms convection current by outer tube 12, and with the sample gas in Nafion inner tube 11 according to the dotted arrow direction in Fig. 1, will permeate
It is discharged to the vapor outside Nafion inner tube 11 by purging by negative pressure blow device.
The outer tube 12 of the Nafion drying tube is made of plastics or metal material, while also having in protection Nafion
The effect of pipe 11.
The Nafion inner tube 11 of the Nafion drying tube can have various shapes, specially linear or U-shaped,
Or O shape or S-shaped etc..
The drying device of the gas detection logging sample gas also includes: dry pipe heating device 3, and cladding setting exists
The outside of the outer tube 12 of Nafion drying tube carries out temperature control heating to Nafion drying tube.
The dry heat device 3 passes through PTC(Positive Temperature Coefficient, positive temperature system
Number) self limiting temperature mode or PID(proportional-integral-differential) control mode carries out temperature control, Nafion drying tube added
Heat avoids damp and hot sample gas when entering Nafion drying tube because temperature change causes vapor to condense.
Heat exchange pattern or thermal convection or heat radiation mode etc. pair can be used in the dry heat device 3
Nafion drying tube is heated.
In the present embodiment, the dry heat device 3 carries out temperature control using PTC self limiting temperature mode, and uses
Heating tape is wrapped around mode and heats to Nafion drying tube, makes temperature and sample gas heating tube in Nafion drying tube
The temperature of line is consistent, it is thus possible to avoid enter into the sample gas in Nafion drying tube because caused by temperature reduces suddenly
Vapor condensation, to influence drying effect.Also, it can letter in such a way that PTC self limiting temperature and heating tape are wrapped around
Change the structure of dry heat device 3, control cost, is conducive to field popularization application.
The negative pressure blow device includes: the first connecting tube 23, and one end connects outer tube 12, and close to Nafion inner tube 11
Inlet end, the other end connect atmosphere；Aspiration pump 21 is arranged in the first connecting tube 23, extracts the purging that dry gas source 4 provides
Gas source forms the negative pressure purge stream of continuous-stable in outer tube 12, for continuously working online for Nafion drying tube, will permeate
It is discharged to the vapor outside Nafion inner tube 11 by purging by the first connecting tube 23；Vapour lock 22, connection setting is in dry gas source 4
Between outer tube 12.
According to different operating conditions, the aspiration pump 21 of the negative pressure blow device can be using diaphragm pump or peristaltic pump or column
Plug pump etc..
In the present embodiment, the aspiration pump 21 uses diaphragm pump.And according to the water removal characteristic of Nafion inner tube 11, every
The negative pressure and flow of purge stream provided by membrane pump and vapour lock 22 need to meet following formula:
Vp=Vs/[(Ps/1.05Pv)-1]；
Wherein, VpIt is purge gass flow, VsIt is sample gas flow, PvIt is purge gass absolute pressure, PsIt is sample gas absolute pressure
Power.From above-mentioned formula as can be seen that when the absolute pressure that sample gas is in about 0.095MPa (is equivalent to 0.005Mpa's or so
Negative pressure) continuous sucking state when, for guarantee Nafion inner tube 11 water rem oval, purging atmospheric pressure be necessarily less than sample pressure
Power could obtain satisfied water removal effect and suitable purge gass flow.Therefore, in the present embodiment, negative pressure purging dress
The purge gass absolute pressure and flow set are respectively set to 0.06MPa and 1.5L/min, so as to meet the sample of 900mL/min
The online water removal drying of gas.
The drying gas source 4 is that negative pressure blow device 2 provides dry source purge gas, and the dew point of purge gas is lower than
Sample gas.Under normal circumstances, the drying instrument wind in oil-gas exploration site mud logging instrument shelter can meet wanting for dry gas source 4
It asks.Particularly, during gas detection logging, for the analysis of C1~C8 the hydrocarbon component in cooperation sample gas, constant-temperature constant-current can be selected de-
Mechanism of qi and heating sample transfer pipeline.Therefore it during heating stirring drilling fluid and high temperature transmission sample gas, can carry secretly
A large amount of vapor.Other also external dryings of drying gas source 4 in order to reach the drying effect of ideal sample gas, in the present invention
Equipment, such as renewable desiccant or semiconductor refrigerating drier etc. improve to further decrease the dew point of purge gas
Drying effect of the Nafion drying tube to sample gas.
In the present embodiment, as shown in Fig. 2, the drying gas source 4 includes: the second connecting tube 44, one end connect outer tube 12,
And close to the outlet side of Nafion inner tube 11；Two position three-way valve 43, first end connect the second connecting tube 44 by vapour lock 22
The other end；Renewable desiccant is filled in first drying cylinder 41, inside, and one end connects atmosphere or dry instrument wind, the other end pass through
The second end of piping connection two position three-way valve 43；The second drying cylinder 42 being provided separately with the first drying cylinder 41, inside filling can
Desiccant is regenerated, one end connects atmosphere or dry instrument wind, the other end pass through the third end of piping connection two position three-way valve 43.It is dry
During dry, two position three-way valve 43 is first connected to the first drying cylinder 41 of side, provides dry source purge gas.The second of the other side
Drying cylinder 42 is spare, when the desiccant failure in the first drying cylinder 41, two position three-way valve 43 need to only be switched to it is second dry
Dry cylinder 42 is connected to, and the dry source purge gas of the offer of on-line uninterruption can be realized.And it is dry in the first drying cylinder 41 to fail
Drying prescription can be reused after regeneration.
The two position three-way valve 43 is manually or automatically to cut between the first drying cylinder 41 and the second drying cylinder 42
Change connection.
The renewable desiccant is discoloration silica gel or molecular sieve or anhydrous calcium chloride etc..
The present invention also provides a kind of drying means of gas detection logging sample gas, are realized using above-mentioned drying device, utilize
The various concentration of the tube wall two sides gas moisture pressure of Nafion inner tube 11 makes the hydrone in sample gas pass through pipe as driving force
Wall infiltrates into outside Nafion inner tube 11, and forms the drying purge gas of continuous-stable in outer tube 12 using negative pressure blow device,
Convection current is formed with the sample gas in Nafion inner tube 11, the vapor outside Nafion inner tube 11 will be penetrated by purging by negative pressure
It is discharged at blow device, realizes and the dry of sample gas is removed water.
The drying means is suitable for oil exploration gas detection logging scene, for negative pressure≤0.02MPa tiny structure
The sample gas of sampling carries out continuous online lossless water removal drying；Or it is suitable for various continuous on-line gas analysis scenes, it uses
Continuous online lossless water removal drying is carried out in the sample gas sampled to negative pressure≤0.02MPa tiny structure.
In conclusion the drying device and drying means of gas detection logging sample gas provided by the present invention, are based on Nafion
The characteristics of drying tube removes water, structure is simple, and low in cost, applied widely, rate of drying is fast, reliable performance, and in sample gas
The hydrocarbon component to be checked it is unaffected, the online lossless dry water removal for sampling sample gas to tiny structure may be implemented, be suitable for stone
Exploration activity gas detection logging scene or the dry field of the various pre-treatments for needing on-line gas analysis, especially for equipped with perseverance
Warm constant flow degasser and mating heating sample line carry out high boiling hydrocarbon component (such as C1~C8 gas surveys analysis) gas detection logging
Occasion.
It is discussed in detail although the contents of the present invention have passed through above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read above content, for of the invention
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (9)
1. a kind of drying device of gas detection logging sample gas, connection is arranged in the sample gas pipeline of negative-pressure ward；Its feature exists
In including:
Nafion drying tube, You Yigen outer tube and at least one Nafion inner tube being arranged in outer tube composition, damp and hot sample
Product gas inputs Nafion inner tube by inlet end and carries out online water removal drying, utilizes the various concentration of tube wall two sides gas moisture pressure
It as driving force, infiltrates into the hydrone in sample gas outside Nafion inner tube by tube wall, and dry sample is exported by outlet side
Product gas；
Dry gas source, is connected to outer tube, and close to the outlet side of Nafion inner tube, provides dry source purge gas；
Negative pressure blow device is connected to setting with outer tube, and close to the inlet end of Nafion inner tube, extracts blowing for dry gas source offer
Scavenging source makes it with steady pressure and flow by outer tube, and form convection current with the sample gas in Nafion inner tube, will penetrate into
Vapor outside Nafion inner tube is discharged by purging by negative pressure blow device；
The negative pressure blow device includes:
First connecting tube, one end connect outer tube, and close to the inlet end of Nafion inner tube, the other end connects atmosphere；
Aspiration pump is arranged in the first connecting tube, extracts the source purge gas that dry gas source provides, forms continuous-stable in outer tube
Negative pressure purge stream, and the pressure of the purge stream be less than sample gas pressure；
Vapour lock, connection setting is between dry gas source and outer tube.
2. the drying device of gas detection logging sample gas as described in claim 1, which is characterized in that the Nafion drying tube
Outer tube be made of plastics or metal material；The Nafion inner tube of the Nafion drying tube is linear or U-shaped or O
Shape or S-shaped.
3. the drying device of gas detection logging sample gas as described in claim 1, which is characterized in that also include: drying tube heating
The outside of the outer tube of Nafion drying tube is arranged in device, cladding, carries out temperature control heating to Nafion drying tube；
The dry heat device carries out temperature control by PTC self limiting temperature mode or pid control mode, dry to Nafion
Pipe is heated；
The dry heat device is using heat exchange pattern or thermal convection or heat radiation mode to Nafion drying tube
It is heated.
4. the drying device of gas detection logging sample gas as described in claim 1, which is characterized in that the negative pressure blow device
Aspiration pump using diaphragm pump or peristaltic pump or plunger pump.
5. the drying device of gas detection logging sample gas as described in claim 1, which is characterized in that the drying gas source provides
Source purge gas dew point be lower than sample gas dew point.
6. the drying device of gas detection logging sample gas as claimed in claim 5, which is characterized in that the drying gas source uses
Dry instrument wind or external desiccant or external semiconductor refrigerating drier.
7. the drying device of gas detection logging sample gas as claimed in claim 6, which is characterized in that the drying gas source packet
Contain:
Second connecting tube, one end connect outer tube, and close to the outlet side of Nafion inner tube；
Two position three-way valve, first end connect the other end of the second connecting tube by vapour lock；
Renewable desiccant is filled in first drying cylinder, inside, and one end connects atmosphere or dry instrument wind, the other end are connected by pipeline
Connect the second end of two position three-way valve；
Renewable desiccant is filled in second drying cylinder, inside, and one end connects atmosphere or dry instrument wind, the other end are connected by pipeline
Connect the third end of two position three-way valve；
The two position three-way valve is manually or automatically to switch connection between the first drying cylinder and the second drying cylinder.
8. a kind of drying means of gas detection logging sample gas, real using drying device such as according to any one of claims 1 to 7
It is existing；It is characterized in that,
Using the various concentration of the tube wall two sides gas moisture pressure of Nafion inner tube as driving force, make the hydrone in sample gas
It is infiltrated into outside Nafion inner tube by tube wall, and utilizes the drying purge gass of the negative pressure blow device continuous-stable of pipe formation outside
Sample gas in body, with Nafion inner tube forms convection current, will penetrate into the vapor outside Nafion inner tube by purging by negative pressure
It is discharged at blow device, realizes and the dry of sample gas is removed water.
9. the drying means of gas detection logging sample gas as claimed in claim 8, which is characterized in that the drying means is applicable in
In oil exploration gas detection logging scene, the sample gas for sampling to negative pressure≤0.02MPa tiny structure carries out continuous online nothing
The water removal drying of damage；Or it is suitable for various continuous on-line gas analysis scenes, for being taken to negative pressure≤0.02MPa tiny structure
The sample gas of sample carries out continuous online lossless water removal drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610823551.7A CN106178854B (en) | 2016-09-14 | 2016-09-14 | A kind of drying device and drying means of gas detection logging sample gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610823551.7A CN106178854B (en) | 2016-09-14 | 2016-09-14 | A kind of drying device and drying means of gas detection logging sample gas |
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| Publication Number | Publication Date |
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| CN106178854A CN106178854A (en) | 2016-12-07 |
| CN106178854B true CN106178854B (en) | 2019-07-26 |
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| CN106770979A (en) * | 2017-01-21 | 2017-05-31 | 江苏旭龙环境科技有限公司 | The anti-blocking VOCs on-Line Monitor Devices of one kind water removal |
| CN106596868A (en) * | 2017-01-21 | 2017-04-26 | 江苏旭龙环境科技有限公司 | Deoiling and anti-clogging VOCs online monitoring apparatus |
| CN109839424B (en) * | 2017-11-27 | 2021-06-01 | 中国科学院大连化学物理研究所 | Pretreatment method for direct mass spectrometry detection of n-pentane in exhaled breath |
| CN109765083A (en) * | 2018-12-26 | 2019-05-17 | 西安交通大学 | A kind of sampling of high-humidity gas fume particle and measuring device and its application method |
| CN112815640B (en) * | 2020-12-30 | 2022-12-09 | 苏州富强科技有限公司 | Drying device applied to dialysis tube |
| CN115015503A (en) * | 2022-05-30 | 2022-09-06 | 中国海洋大学 | Ocean radon in-situ measurement device and measurement method |
| CN116296714B (en) * | 2023-05-24 | 2023-07-28 | 胜利油田胜油测录工程技术有限公司 | Gas processing device for well head end analysis of logging engineering |
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| CN101524617A (en) * | 2009-04-09 | 2009-09-09 | 陈明 | Method for removing moisture in gases by a Nafion tube |
| US8268055B2 (en) * | 2010-02-25 | 2012-09-18 | Perma Pure Llc | Membrane gas dryers incorporating rotatable fittings |
| CN202478790U (en) * | 2011-12-23 | 2012-10-10 | 深圳市理邦精密仪器股份有限公司 | Dehumidification tube assisting in drying and by-pass flow gas analyzer |
| CN205333581U (en) * | 2016-02-03 | 2016-06-22 | 张利琴 | Be applicable to continuous detecting system of VOCs in wet flue gas of stationary source |
| CN206027392U (en) * | 2016-09-14 | 2017-03-22 | 上海神开石油化工装备股份有限公司 | Drying device of gas logging sample gas |
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