CN206027392U - Drying device of gas logging sample gas - Google Patents
Drying device of gas logging sample gas Download PDFInfo
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- CN206027392U CN206027392U CN201621055685.0U CN201621055685U CN206027392U CN 206027392 U CN206027392 U CN 206027392U CN 201621055685 U CN201621055685 U CN 201621055685U CN 206027392 U CN206027392 U CN 206027392U
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Abstract
The utility model relates to a drying device of gas logging sample gas, the different concentration of utilizing the gaseous moisture pressure in pipe wall both sides of nafion inner tube are as drive power, it permeates outside of tubes to the nafion in to make hydrone in the sample gas pass through the pipe wall, and utilize the negative pressure to sweep the device at the continuous stable dry sweeping gas body of outer tube formation, form the convection current with sample gas intraductal in the nafion, the vapor that will permeate outside of tubes in the nafion sweeps device department by the negative pressure and discharges through sweeping, the realization is to the dry dewatering of sample gas. The utility model discloses based on the characteristics of nafion drying tube dewatering, simple structure, low cost, application scope is wide, drying rate is fast, the dependable performance, and treating in the sample gas to examine the hydrocarbon component not influenced, can realize the online lossless dry dewatering to negative micro -pressure (negative pressure <= 0.02 MPa) sample gas.
Description
Technical field
This utility model is related to a kind of sample gas drying device of oil log gas analysis system, particularly relates to a kind of suitable
For the continuous online lossless drying device of the sample gas of tiny structure sampling.
Background technology
Online gas detection logging is the important ring during oil exploration, and which is by returning drilling fluid institute in drilling process
The on-line analyses 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.Its Oil-gas exploration evaluation to live oil and gas development, particularly early stage has weight
Want meaning.
During gas detection logging, the drilling fluid to returning in drilling well is needed to carry out on-line degassing to extract sample gas therein.
In this course, a large amount of vapor are inevitably mixed in sample gas, so as to disturb gas to survey result, or even affect gas to survey
The performance of instrument.Therefore pre-treatment drying can be carried out to the sample gas of on-line period typically.Additionally, for avoiding the water in sample gas from steaming
Gas occurs to liquefy because of pressure change, and the pre-treatment of sample gas is dried the tiny structure before would be normally located at sample pump（Negative pressure
≤0.02 MPa）Suction stage, is pumped into mud logging unit through sampling pump and malleation after sample gas have been dried again.
Well logging gas is surveyed conventional pre-treatment and is dried and has using calcium chloride desiccant and be dried two using semiconductor refrigerating at present
The method of kind.But all different degrees of presence shortcoming, affects the accuracy of gas detection logging.Wherein, adopt the calcium chloride desiccant can be with
Effectively remove the moisture in sample gas, but must Jing often change desiccant.If the desiccant that water suction is made moist is not changed in time, pole
Easily contaminated samples pipeline, or even the blocking for causing gas sample pipeline.It is then, by cryogenic refrigeration, to make wet to be dried using semiconductor refrigerating
Mode eliminating water of the moisture in profit sample gas through condensation liquefaction.But the hydrocarbon such as the heavy constituent in sample gas, such as C5, even C6～C8
Component is affected by its own boiling point, also can partially or completely condensation liquefaction, and then affect the verity of gas detection logging.
Utility model content
The purpose of this utility model is to provide a kind of drying device of gas detection logging sample gas, based on Nafion drying tubes
The characteristics of eliminating water, simple structure, are with low cost, applied widely, and rate of drying is fast, to be checked in dependable performance, and sample gas
Hydrocarbon component is unaffected, it is possible to achieve be dried eliminating water to tiny structure sampling the online lossless of sample gas.
In order to achieve the above object, this utility model is achieved through the following technical solutions：A kind of gas detection logging sample gas
Drying device, connect setting is in the sample gas pipeline of negative pressure-pumping；Comprising：Nafion drying tubes, by an outer tube and set
At least one Nafion inner tubes composition in the outer tube is put, damp and hot sample gas are input into Nafion inner tubes and are carried out by inlet end
Line eliminating water is dried, and by the use of the variable concentrations of tube wall both sides gas moisture pressure as driving force, passes through the hydrone in sample gas
Tube wall is infiltrated into outside Nafion inner tubes, and exports drying sample gas by outlet side；Source of the gas is dried, is connected with outer tube, and it is close
The outlet side of Nafion inner tubes, there is provided dry source purge gas；Negative pressure blow device, connects setting with outer tube, and close
The inlet end of Nafion inner tubes, extraction are dried the source purge gas of source of the gas offer so as to steady pressure and flow by outer tube, and
Convection current is formed with the sample gas in Nafion inner tubes, the vapor penetrated into outside Nafion inner tubes is purged by negative pressure by purging
Discharge at device.
The outer tube of described Nafion drying tubes is made up of plastics or metal material；Described Nafion drying tubes
Nafion inner tubes are linear, or U-shaped, or O shapes, or S-shaped.
The drying device of described gas detection logging sample gas is also included：Pipe heating device is dried, its cladding is arranged on
The outside of the outer tube of Nafion drying tubes, carries out temperature control heating to Nafion drying tubes；Described dry heat device passes through PTC
Self limiting temperature mode or pid control mode carry out temperature control, and Nafion drying tubes are heated；Described dry heat device
Using heat exchange pattern, or thermal convection current mode, or heat radiation mode is heated to Nafion drying tubes.
Described negative pressure blow device is included：First connecting tube, one end connection outer tube, and near the air inlet of Nafion inner tubes
End, other end connection air；Air pump, is arranged in the first connecting tube, and extraction is dried the source purge gas of source of the gas offer, in outer tube
The interior negative pressure purging air-flow for forming continuous-stable, and the pressure of the purging air-flow is less than the pressure of sample gas；Vapour lock, connect setting
It is being dried between source of the gas and outer tube.
The air pump of described negative pressure blow device adopts membrane pump, or peristaltic pump, or plunger displacement pump.
Dew point of the dew point of the described source purge gas that source of the gas offer is provided less than sample gas.
The described source of the gas employing that is dried is dried instrument wind, or external desiccant, or external semiconductor refrigerating exsiccator.
The described source of the gas that is dried is included：Second connecting tube, one end connection outer tube, and near the outlet side of Nafion inner tubes；
Two position three-way valve, its first end connect the other end of the second connecting tube by vapour lock；First drying, internal filling are renewable dry
Drying prescription, one end connect air or are dried instrument wind, and the other end connects the second end of two position three-way valve by pipeline；Second is dried
Cylinder, internal to fill renewable desiccant, one end connects air or is dried instrument wind, and the other end connects two position three-way valve by pipeline
The 3rd end；Described two position three-way valve is that manually or automatically between the first drying and the second drying, switching connects
It is logical.
The drying device of described gas detection logging sample gas be applied to oil exploration gas detection logging scene, for negative pressure≤
The sample gas of the tiny structure sampling of 0.02MPa carry out continuous online lossless eliminating water and are dried；Or be applied to various continuous online
Gas analyses scene, the sample gas sampled for the tiny structure to negative pressure≤0.02MPa carry out continuous online lossless eliminating water and do
It is dry.
In sum, the drying device of gas detection logging sample gas provided by the utility model, based on Nafion drying tubes
The characteristics of eliminating water, simple structure, are with low cost, applied widely, and rate of drying is fast, to be checked in dependable performance, and sample gas
Hydrocarbon component is unaffected, it is possible to achieve be dried eliminating water to tiny structure sampling the online lossless of sample gas, it is adaptable to oil exploration
Gas detection logging scene, or the various pre-treatments for needing on-line gas analysis are dried field, especially for being furnished with constant-temperature constant-current
Amount degasser and supporting heating sample line carry out high boiling hydrocarbon component（Such as C1～C8 gas surveys analysis）The occasion of gas detection logging.
Description of the drawings
Structural representations of the Fig. 1 for the drying device of the gas detection logging sample gas in this utility model；
Fig. 2 is the structural representation for being dried source of the gas in this utility model.
Specific embodiment
Below in conjunction with Fig. 1 and Fig. 2, by describing a preferably specific embodiment in detail, this utility model is done into one
Step is illustrated.
As shown in figure 1, for the drying device of gas detection logging sample gas provided by the utility model, connect setting is in negative pressure
In the sample gas pipeline of suction；Comprising：Nafion drying tubes, by an outer tube 12 and be arranged in the outer tube 12 at least one
Root Nafion inner tubes 11 are constituted, and damp and hot sample gas are according to the solid arrow direction in Fig. 1 by inlet end input Nafion inner tubes 11
And online eliminating water drying is carried out, by the use of the variable concentrations of tube wall both sides gas moisture pressure as driving force, make the water in sample gas
Molecule is infiltrated into outside Nafion inner tubes 11 by tube wall, and exports drying sample gas by outlet side；Source of the gas 4 is dried, with outer tube 12
Connection, and near the outlet side of Nafion inner tubes 11, there is provided dry source purge gas；Negative pressure blow device, is connected with outer tube 12
Arrange, and near the inlet end of Nafion inner tubes 11, extraction be dried the source purge gas of the offer of source of the gas 4 so as to steady pressure and
Flow passes through outer tube 12 according to the dotted arrow direction in Fig. 1, and forms convection current with the sample gas in Nafion inner tubes 11, will ooze
Discharged by negative pressure blow device to the vapor outside Nafion inner tubes 11 by purging thoroughly.
The outer tube 12 of described Nafion drying tubes is made up of plastics or metal material, while also having in protection Nafion
The effect of pipe 11.
The Nafion inner tubes 11 of described Nafion drying tubes can have various shapes, specially linear, or U-shaped,
Or O shapes, or S-shaped etc..
The drying device of described gas detection logging sample gas is also included：Pipe heating device 3 is dried, its cladding is arranged on
The outside of the outer tube 12 of Nafion drying tubes, carries out temperature control heating to Nafion drying tubes.
Described 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, and Nafion drying tubes are carried out adding
Heat, it is to avoid damp and hot sample gas into during Nafion drying tubes because temperature change causes water vapor condensation.
Described dry heat device 3 can adopt heat exchange pattern, or thermal convection current mode, or heat radiation mode etc. right
Nafion drying tubes are heated.
In the present embodiment, described dry heat device 3 carries out temperature control using PTC self limiting temperatures mode, and adopts
Heating tape voluble wrapping mode is heated to Nafion drying tubes, makes temperature and sample gas heating tube in Nafion drying tubes
The temperature of line is consistent, it is thus possible to avoid enter into what the sample gas in Nafion drying tubes caused because temperature is reduced suddenly
Water vapor condensation, so that affect drying effect.Also, adopt the mode of PTC self limiting temperatures and heating tape voluble wrapping can be with letter
Change the structure of dry heat device 3, control cost, beneficial to field popularization application.
Described negative pressure blow device is included：First connecting tube 23, one end connection outer tube 12, and near Nafion inner tubes 11
Inlet end, the other end connection air；Air pump 21, is arranged in the first connecting tube 23, and extraction is dried the purging of the offer of source of the gas 4
Source of the gas, forms the negative pressure purging air-flow of continuous-stable in outer tube 12, for continuously working online for Nafion drying tubes, will infiltration
Discharged by the first connecting tube 23 to the vapor outside Nafion inner tubes 11 by purging；Vapour lock 22, connect setting are being dried source of the gas 4
Between outer tube 12.
According to different operating modes, the air pump 21 of described negative pressure blow device can adopt membrane pump, or peristaltic pump, or post
Plug pump etc..
In the present embodiment, described air pump 21 adopts membrane pump.And according to the eliminating water characteristic of Nafion inner tubes 11, every
The negative pressure of the purging air-flow provided by membrane pump and vapour lock 22 and flow need to meet equation below：
Vp=Vs/[(Ps/1.05Pv)-1]；
Wherein, VpIt is to purge throughput, VsIt is sample gas flow, PvIt is purge gass absolute pressure, PsIt is sample gas absolute pressure
Power.As can be seen that when sample gas are in the absolute pressure of about 0.095MPa from above-mentioned formula（Equivalent to 0.005Mpa's or so
Negative pressure）During continuous sucking state, it is the water rem oval for ensureing Nafion inner tubes 11, purges atmospheric pressure and be necessarily less than sample pressure
Power, could obtain satisfied water removal effect and suitably purge throughput.Therefore, in the present embodiment, negative pressure purging dress
The purge gass absolute pressure put and flow are respectively set to 0.06MPa and 1.5L/min, so as to meet the sample of 900mL/min
The online eliminating water of gas is dried.
Described is dried the source purge gas that source of the gas 4 is that negative pressure blow device 2 provides drying, and the dew point of purge gas is less than
Sample gas.Generally, being dried in oil-gas exploration site mud logging instrument shelter meet by instrument wind be dried source of the gas 4 will
Ask.Especially, during gas detection logging, it is the analysis for coordinating C1～C8 hydrocarbon components in sample gas, can be de- from constant-temperature constant-current
Mechanism of qi and heating sample transfer pipeline.Therefore, during heated and stirred drilling fluid and high temperature transmission sample gas, can carry secretly
Substantial amounts of vapor.In order to reach the drying effect of preferable sample gas, in this utility model be dried source of the gas 4 also it is external other
Drying equipment, such as renewable desiccant or semiconductor refrigerating exsiccator etc., so as to further reduce the dew point of purge gas, carries
Drying effect of the high Nafion drying tubes to sample gas.
In the present embodiment, as shown in Fig. 2 the described source of the gas 4 that is dried is included：Second connecting tube 44, one end connection outer tube 12,
And near the outlet side of Nafion inner tubes 11；Two position three-way valve 43, its first end connect the second connecting tube 44 by vapour lock 22
The other end；First drying 41, internal to fill renewable desiccant, one end connects air or is dried instrument wind, and the other end passes through
Pipeline connects the second end of two position three-way valve 43；The second drying 42 being provided separately with the first drying 41, internal filling can
Regeneration desiccant, one end connect air or are dried instrument wind, and the other end connects the 3rd end of two position three-way valve 43 by pipeline.It is dry
During dry, two position three-way valve 43 first connects the first drying 41 of side, there is provided dry source purge gas.The second of opposite side
Drying 42 is standby, when the desiccant in the first drying 41 fails, only need to switch to two position three-way valve 43 dry with second
Dry cylinder 42 is connected, you can realize the dry source purge gas of the offer of on-line uninterruption.And it is dry in the first drying 41 for failing
Drying prescription can be reused after regeneration.
Described two position three-way valve 43 is manually or automatically to cut between the first drying 41 and the second drying 42
Change connection.
Described renewable desiccant is discoloration silica gel, or molecular sieve, or anhydrous calcium chloride etc..
The drying device of described gas detection logging sample gas, it is adaptable to oil exploration gas detection logging scene, for negative pressure
The sample gas of the tiny structure sampling of≤0.02MPa carry out continuous online lossless eliminating water and are dried；Or continuously exist suitable for various
Line gas analyses scene, the sample gas for the tiny structure sampling to negative pressure≤0.02MPa carry out continuous online lossless eliminating water
It is dried.
In sum, the drying device of gas detection logging sample gas provided by the utility model, based on Nafion drying tubes
The characteristics of eliminating water, simple structure, are with low cost, applied widely, and rate of drying is fast, to be checked in dependable performance, and sample gas
Hydrocarbon component is unaffected, it is possible to achieve be dried eliminating water to tiny structure sampling the online lossless of sample gas, it is adaptable to oil exploration
Gas detection logging scene, or the various pre-treatments for needing on-line gas analysis are dried field, especially for being furnished with constant-temperature constant-current
Amount degasser and supporting heating sample line carry out high boiling hydrocarbon component（Such as C1～C8 gas surveys analysis）The occasion of gas detection logging.
Although content of the present utility model has been made to be discussed in detail by above preferred embodiment, but it should be appreciated that on
The description stated is not considered as to restriction of the present utility model.After those skilled in the art have read the above, for
Various modifications and substitutions of the present utility model all will be apparent.Therefore, protection domain of the present utility model should be by appended
Claim limiting.
Claims (9)
1. a kind of drying device of gas detection logging sample gas, connect setting is in the sample gas pipeline of negative pressure-pumping；Its feature exists
In, comprising：
Nafion drying tubes, are made up of an outer tube and at least one Nafion inner tube being arranged in the outer tube, damp and hot sample
Product gas is input into Nafion inner tubes by inlet end and carries out online eliminating water drying, using the variable concentrations of tube wall both sides gas moisture pressure
As driving force, the hydrone in sample gas is infiltrated into outside Nafion inner tubes by tube wall, and sample is dried by outlet side output
Product gas；
Source of the gas is dried, is connected with outer tube, and near the outlet side of Nafion inner tubes, there is provided dry source purge gas；
Negative pressure blow device, connects setting with outer tube, and near the inlet end of Nafion inner tubes, extraction is dried blowing for source of the gas offer
Scavenging source so as to steady pressure and flow by outer tube, and convection current is formed with the sample gas in Nafion inner tubes, will penetrate into
Vapor outside Nafion inner tubes is discharged by negative pressure blow device by purging.
2. the drying device of gas detection logging sample gas as claimed in claim 1, it is characterised in that described Nafion drying tubes
Outer tube be made up of plastics or metal material；The Nafion inner tubes of described Nafion drying tubes are linear, or U-shaped, or O
Shape, or S-shaped.
3. the drying device of gas detection logging sample gas as claimed in claim 1, it is characterised in that also include：Drying tube is heated
Device, cladding are arranged on the outside of the outer tube of Nafion drying tubes, carry out temperature control heating to Nafion drying tubes；
Described dry heat device carries out temperature control by PTC self limiting temperatures mode or pid control mode, and Nafion is dried
Pipe is heated；
Described dry heat device adopts heat exchange pattern, or thermal convection current mode, or heat radiation mode to Nafion drying tubes
Heated.
4. the drying device of gas detection logging sample gas as claimed in claim 1, it is characterised in that described negative pressure blow device
Comprising：
First connecting tube, one end connection outer tube, and near the inlet end of Nafion inner tubes, other end connection air；
Air pump, is arranged in the first connecting tube, and extraction is dried the source purge gas of source of the gas offer, in outer tube forms continuous-stable
Negative pressure purging air-flow, and the pressure of the purging air-flow less than sample gas pressure；
Vapour lock, connect setting are being dried between source of the gas and outer tube.
5. the drying device of gas detection logging sample gas as claimed in claim 4, it is characterised in that described negative pressure blow device
Air pump adopt membrane pump, or peristaltic pump, or plunger displacement pump.
6. the drying device of gas detection logging sample gas as claimed in claim 1, it is characterised in that described is dried source of the gas offer
Source purge gas dew point less than sample gas dew point.
7. the drying device of gas detection logging sample gas as claimed in claim 6, it is characterised in that described is dried source of the gas employing
It is dried instrument wind, or external desiccant, or external semiconductor refrigerating exsiccator.
8. the drying device of gas detection logging sample gas as claimed in claim 7, it is characterised in that described is dried source of the gas bag
Contain：
Second connecting tube, one end connection outer tube, and near the outlet side of Nafion inner tubes；
Two position three-way valve, its first end connect the other end of the second connecting tube by vapour lock；
First drying, internal to fill renewable desiccant, one end connects air or is dried instrument wind, and the other end is connected by pipeline
Connect the second end of two position three-way valve；
Second drying, internal to fill renewable desiccant, one end connects air or is dried instrument wind, and the other end is connected by pipeline
Connect the 3rd end of two position three-way valve；
Described two position three-way valve is the manually or automatically switching connection between the first drying and the second drying.
9. the drying device of gas detection logging sample gas as claimed in claim 1, it is characterised in that described drying device is suitable for
In oil exploration gas detection logging scene, the sample gas for the tiny structure sampling to negative pressure≤0.02MPa carry out continuous online nothing
The eliminating water of damage is dried；Or it is applied to various continuous on-line gas analysis scenes, for taking to the tiny structure of negative pressure≤0.02MPa
The sample gas of sample carry out continuous online lossless eliminating water and are dried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621055685.0U CN206027392U (en) | 2016-09-14 | 2016-09-14 | Drying device of gas logging sample gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621055685.0U CN206027392U (en) | 2016-09-14 | 2016-09-14 | Drying device of gas logging sample gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206027392U true CN206027392U (en) | 2017-03-22 |
Family
ID=58297422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621055685.0U Withdrawn - After Issue CN206027392U (en) | 2016-09-14 | 2016-09-14 | Drying device of gas logging sample gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206027392U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106178854A (en) * | 2016-09-14 | 2016-12-07 | 上海神开石油化工装备股份有限公司 | The drying device of a kind of gas detection logging sample gas and drying means |
| CN107817269A (en) * | 2017-11-29 | 2018-03-20 | 中国华能集团清洁能源技术研究院有限公司 | The on-line metering device and on-line metering method of gasification of biomass calorific value of fuel gas |
-
2016
- 2016-09-14 CN CN201621055685.0U patent/CN206027392U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106178854A (en) * | 2016-09-14 | 2016-12-07 | 上海神开石油化工装备股份有限公司 | The drying device of a kind of gas detection logging sample gas and drying means |
| CN107817269A (en) * | 2017-11-29 | 2018-03-20 | 中国华能集团清洁能源技术研究院有限公司 | The on-line metering device and on-line metering method of gasification of biomass calorific value of fuel gas |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170322 Effective date of abandoning: 20190726 |
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| AV01 | Patent right actively abandoned |