CN205808925U - A kind of near-infrared crude oil water content detection device - Google Patents
A kind of near-infrared crude oil water content detection device Download PDFInfo
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- CN205808925U CN205808925U CN201620630410.9U CN201620630410U CN205808925U CN 205808925 U CN205808925 U CN 205808925U CN 201620630410 U CN201620630410 U CN 201620630410U CN 205808925 U CN205808925 U CN 205808925U
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Abstract
This utility model provides a kind of near-infrared crude oil water content detection device, light-source head and spectrographic detection head is directly used to realize transmitting and the reception of detection light beam, spectrographic detection head arranges linear variable filter and photodetector array, it is directly realized by the collection of detection light beam light spectrum information, without using spectrogrph, overall structure is simpler.Light path carrys out confine optical beam without arranging slit, higher to the efficiency of light energy utilization, it is not necessary to reference light paths is set, simplify structure, low to detection environmental requirement, reduce installation cost, take volume little, be beneficial to use in difference detection scene.Use continuous spectrum light source, during spectral information gathers, detection variable is many, and accuracy of detection is higher, uses optical means will not be affected by oil density, emulsifying degree, salinity and viscosity, capacity of resisting disturbance is strong, can detect moisture content liquid in 0 to 100%, measure wide ranges, stability is high, measurement result is reliable, can meet the requirement that moisture content is accurately measured.
Description
Technical field
This utility model relates to crude oil detection field, in particular to a kind of near-infrared crude oil water content detection device.
Background technology
Monitoring oil well crude oil moisture content is for well test separator, oil gathering station, crude oil treating apparatus and oil sale tank field all
Most important.Grasp in time and control the moisture content of crude oil and can improve oil recovery efficiency, output water can be reduced to greatest extent
Treating capacity, improves the quality of crude oil to greatest extent by improving crude oil dehydration process.Crude oil water content is monitored for oil reservoir
Management and Optimizing manufacture are highly important, it is possible to reliably with estimation crude oil net production continuously, do oil well produced problem
Go out correct diagnosis and safeguard, in order to the exploitation pattern of oil reservoir is carried out necessary adjustment.
Existing detecting device for moisture content can use optical method, uses optical method to need to use spectrogrph.Typically can make
With color dispersion-type spectrogrph or interference type spectral instrument.Color dispersion-type spectrogrph prism to be used or grating are as dispersion element, and light path is multiple
Miscellaneous cause its have complexity frame for movement, take volume bigger.And spectrogrph needs use slit, to the light received
Energy utilization rate is relatively low, in order to obtain higher signal to noise ratio, it is necessary to use more powerful light source.Use interference type spectral instrument,
Though without slit so that capacity usage ratio is higher, it is not necessary to high power light source, but interference type spectral instrument being wanted accurate doing
Interferometer structure, to using, environmental requirement is high, and in more severe detection environment, spectrogrph can be caused damage, complicated essence by use
The use cost that close structure is brought is the highest.
Utility model content
In view of this, the purpose of this utility model embodiment is to provide a kind of near-infrared crude oil water content detection device,
The problems referred to above can be solved.
The technical scheme that this utility model provides is as follows:
A kind of near-infrared crude oil water content detection device, including: light-source head, spectrographic detection head and signal processing circuit, its
In:
Described light-source head and spectrographic detection head are immersed in described flow cell respectively, and position is relative；
Described light-source head launches the detection light beam with continuous spectrum；
Described spectrographic detection head receives the detection light beam after described crude oil to be measured absorbs, and obtains described detection light beam
Spectral information, described spectrographic detection head includes linear variable filter and photodetector array, wherein:
Described linear variable filter fits with the photosurface of described photodetector array, and described linear gradient filters
The spectral transmittance of sheet, along described photodetector array orientation linear change, has the described of different wave length for limiting
Detection light beam arrives the ad-hoc location of described photodetector array；
Described photodetector array for obtain filtered after the spectral information of described detection light beam；
Described signal processing circuit is connected with described spectrographic detection head, including for according to described spectral information, obtains
The processor of the moisture content of described crude oil to be measured.
Further, also include:
It is connected with described light-source head and spectrographic detection head respectively, controls described light-source head and spectrographic detection head collaborative work
Controller.
Further, described light-source head includes light source, illuminator and first window glass, wherein:
Described light source generates detection light beam；
Described reflecting mirror reflects and collimates described detection light beam.
Further, described light-source head also includes first window glass, and the detection light beam after collimation passes through described first window
Mouth glass is launched.
Further, described spectrographic detection head being additionally provided with the second window glass, described detection light beam is by described the
Two window glass enter in described spectrographic detection head.
Further, described spectrographic detection head is additionally provided with the second window glass.
Preferably, the spectral region of described linear variable filter is 1200nm to 2500nm.
Preferably, the spectral region of described light source is 1200 to 2500nm.
Preferably, described light source is halogen light source.
Preferably, described linear photoconductor detector array is classified as linear array InGaAs detector.
Preferably, the spectral response range of described linear photoconductor detector array is 1200nm to 2500nm.
Compared with prior art, in the embodiment of the present application, light-source head and spectrographic detection head is directly used to realize detection light
The transmitting of bundle and reception, arrange optical filter and photodetector array, can be directly realized by detection light beam light in spectrographic detection head
The collection of spectrum information, it is not necessary to using spectrogrph, overall structure is simpler.Without arranging slit to limit detection light in light path
Bundle, higher to the efficiency of light energy utilization, it is not necessary to reference light paths is set, simplify structure further, low to detection environmental requirement, reduce dress
Put holistic cost, take volume less, be more conducive to use in difference detection scene.Further, employing has the light of continuous spectrum
Source, during spectral information gathers, detection variable is more, and stability is more preferable, and accuracy of detection is the highest, and uses optics
The moisture content of crude oil is detected by method, will not be affected by oil density, emulsifying degree, salinity and viscosity, anti-
Interference performance is higher, can detect moisture content liquid in 0 to 100% four corner, measures scope wider, and stability is more
Height, measurement result is the most more reliable, can meet the requirement of measurement accurate to crude oil water content.
For making above-mentioned purpose of the present utility model, feature and advantage to become apparent, preferred embodiment cited below particularly, and
Coordinate appended accompanying drawing, be described in detail below.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of this utility model embodiment, will use required in embodiment below
Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiment of the present utility model, the most should be by
Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, also may be used
To obtain other relevant accompanying drawings according to these accompanying drawings:
The schematic diagram of the near-infrared crude oil water content detection device that Fig. 1 provides for this utility model preferred embodiment；
Light-source head that Fig. 2 provides for this utility model preferred embodiment and the internal structure schematic diagram of spectrographic detection head.
Main components label collects:
Light-source head 101；
Spectrographic detection head 102；
Signal processing circuit 103；
Controller 104；
Light source 1011；
Reflecting mirror 1012；
First window glass 1013；
Linear variable filter 1021；
Photodetector array 1022；
Second window glass 1023.
Detailed description of the invention
Below in conjunction with accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out clearly
Chu, it is fully described by, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole realities
Execute example.Generally can be next with various different configurations with the assembly of this utility model embodiment illustrated described in accompanying drawing herein
Arrange and design.Therefore, below the detailed description of the embodiment of the present utility model provided in the accompanying drawings is not intended to limit
Claimed scope of the present utility model, but it is merely representative of selected embodiment of the present utility model.Based on this utility model
Embodiment, the every other embodiment that those skilled in the art are obtained on the premise of not making creative work, all
Belong to the scope of this utility model protection.
It should also be noted that similar label and letter represent similar terms, therefore, the most a certain Xiang Yi in following accompanying drawing
Individual accompanying drawing is defined, then need not it be defined further and explains in accompanying drawing subsequently.Meanwhile, new in this practicality
In the description of type, term " first ", " second " etc. are only used for distinguishing and describe, and it is not intended that indicate or imply relatively important
Property.
Conventional crude oil water content measuring method has weight method, capacitance method, microwave method and optical method.Weight method according to oil and
The density contrast of water measures moisture content, and the method is easily subject to the interference of other foreign material in oil-water mixture, is especially in the presence of gas
During body, measurement accuracy is low.Capacitance measurement is that the dependency between the dielectric constant according to oil-water mixture and moisture content comes
Measuring moisture content, the method is only applicable to the crude oil water content of low-water-content and measures, and the crude oil bigger for moisture content cannot be accurate
Really measure.Microwave method measurement is easily subject to the impact of salinity and gas, and is not suitable for the measurement of high-moisture percentage crude oil.Use near
The optical method of infrared absorption characteristic, has and is not affected by oil density, viscosity, salinity, gas etc., can measure 0～100%
The advantages such as moisture content scope, are presently the most one of measuring method of advanced person.Existing technology uses near infrared light absorbance to survey
The moisture content of gauging water mixed liquid, there are the following problems for the method: (1) uses spectral band quantity few, and calibration precision is relatively low, holds
It is vulnerable to the interference of the scattered light that impurity in oil-water mixture causes；(2) photodetector separated, multiple photodetections are used
Device gathers signal response nonuniformity respectively and amplifying circuit discordance causes certainty of measurement to decline.
In prior art when the spectral information of light beam is checked, spectrogrph can be used to carry out, typically can use color
Dissipate type spectrogrph or interference type spectral instrument.Color dispersion-type spectrogrph prism to be used or grating are led as dispersion element, light path complexity
Cause the frame for movement with complexity, take volume bigger.And spectrogrph needs use slit, to the light-use received
Rate is relatively low, in order to obtain higher signal to noise ratio, it is necessary to use more powerful light source.
Use interference type spectral instrument, though without slit so that capacity usage ratio is higher, it is not necessary to high power light source, but
Being the interferometer structure needing precision in interference type spectral instrument, to using, environmental requirement is high, in more severe detection environment
Spectrogrph can be caused damage by use, and the use cost that the structure of complex precise is brought is the highest.
Further, also need to arrange the reference being made up of light splitting piece, silicon photodetector in said structure when using spectrogrph
Light path, the determination for spectral information provides reference spectra, this also increases the complexity of system.
In view of this, as it is shown in figure 1, the embodiment of the present application provides a kind of near-infrared crude oil water content detection device, bag
Include: light-source head 101, spectrographic detection head 102 and signal processing circuit 103.
Described light-source head 101 and spectrographic detection head 102 are immersed in crude oil to be measured respectively, and position is relative, by light-source head
101 and spectrographic detection head 102 constitute the detection light path to crude oil to be measured, light-source head 101 launches detection light beam, detects light beam
After former pick up the oil to be measured, due to the impact of the impurity such as the moisture in crude oil to be measured, the spectral information of detection light beam can be sent out
Changing, carries out opto-electronic conversion etc. by spectrographic detection head 102 to the detection light beam received and processes, can obtain detection light beam
Spectral information.
Wherein, described light-source head 101 can launch the detection light beam with continuous spectrum, the light in the embodiment of the present application
Source 101 can use spectral region to be near infrared parts, it is preferred that light-source head 101 can use spectral region to be 1200
Halogen light source to 2500nm.
As in figure 2 it is shown, described light-source head 101 includes light source 1011, reflecting mirror 1012 and first window glass 1013, its
In: described light source 1011 generates detection light beam；Described reflecting mirror 1012 reflects and collimates described detection light beam, the detection after collimation
Light beam is launched by described first window glass 1013.Detection light beam is launched, inspection after light source igniting in light-source head 101
The configured reflecting mirror 1012 outside light source of light-metering bundle reflects and collimates, and collimated beam transfers out through first window glass 1013
Go.
Described spectrographic detection head 102 receives the detection light beam after described crude oil to be measured absorbs, and obtains described detection light
The spectral information of bundle, described spectrographic detection head 102 includes linear variable filter 1021 and photodetector array 1022, described
Linear variable filter 1021 fits with the photosurface of described photodetector array 1022, described linear variable filter
The spectral transmittance of 1021 is along described photodetector array orientation linear change, for limiting the institute with different wave length
State detection light beam and arrive the ad-hoc location of described photodetector array.Described photodetector array 1022 is for obtaining through filter
The spectral information of the described detection light beam after light.
Using linear variable filter 1021 in the embodiment of the present application, linear variable filter 1021 is a kind of special band
Pass filter, specially forms wedge shape coating to specific direction during making, and the spectral transmittance of linear variable filter 1021 is at wedge
There is linear change in shape direction, thus plays light splitting effect.Linear variable filter 1021 and the combination of photodetector array
Other Instrument assemblies a large amount of can be replaced such as: grating, refrigeration detector etc., thus save the substantial amounts of device space, cost and
Weight.Spectrographic detection head 102 realizes the reception to light by linear variable filter 1021 and photodetector array 1022
Acquisition with spectral information.Spectrographic detection head 102 to arrange position relative with the position of light-source head 101, in order to can directly obtain
Take the detection light beam that light-source head 101 sends, and without arranging the beam treatment device of other forms in light path, directly pass through light
Spectrum detecting head 102 can complete the reception of light beam.
Preferably, photodetector array 1022 can use linear array InGaAs (indium gallium arsenide,
Indium gallium arsenic) detector, the InGaAs material that linear array InGaAs detector uses is that a kind of excellent near infrared light electrical resistivity survey is measured and monitored the growth of standing timber material,
Make detector have higher detectivity, higher signal to noise ratio, relatively low power consumption and longer life-span, and use InGaAs
The photodetector that material is made has the miniaturization of less volume, beneficially device.Preferably, the line in the embodiment of the present application
The spectral response range of battle array InGaAs detector can be 1200 to 2500nm.
Described signal processing circuit 103 is connected with described spectrographic detection head 102, including for believing according to described spectrum
Breath, obtains the processor of the moisture content of described crude oil to be measured.
Processor in signal processing circuit 103 is by the calculating to spectral information, it is possible to acquire crude oil to be measured
Moisture content data.
Further, when the detection using above-mentioned monitoring device to carry out crude oil water content, at spectrographic detection head 102 not yet
Before being positioned in crude oil to be measured, detect one group of blank spectral information first with spectrographic detection head 102, be designated as I0(λ).Then, will
Light-source head 101 and spectrographic detection head 102 are put in crude oil to be measured, and adjust position relationship between the two, make light-source head 101
Receive after the detection light beam sent can pass through crude oil to be measured and by spectrographic detection head 102.
After light-source head 101 and spectrographic detection head 102 are immersed in crude oil to be measured, light-source head 101 can continue to launch inspection
Light-metering bundle, detection light beam is received by spectrographic detection head 102 after the impact of crude oil to be measured, and spectrographic detection head 102 is by right
The spectral information of the detection light beam received is analyzed, and can obtain carrying the spectral information of crude oil characteristic information, be designated as
I1(λ)。
Further, utilizing absorbance computing formula can be calculated total absorbance A (λ), concrete formula is:
Further, described total absorbance is carried out spectral absorbance solution hybrid operation, obtain moisture to described total extinction
The contribution margin of degree, is converted to moisture content numerical value by described moisture to the contribution margin of described total absorbance.By above-mentioned such meter
Calculation process i.e. can get moisture content numerical value in crude oil.
In the embodiment of the present application, directly use light-source head 101 and spectrographic detection head 102 realize detection light beam transmitting and
Receive, spectrographic detection head 102 arranges linear variable filter 1021 and photodetector array, detection light can be directly realized by
The collection of bundle spectral information, it is not necessary to using spectrogrph, overall structure is simpler.Without arranging slit to limit detection in light path
Light beam, higher to the efficiency of light energy utilization, it is not necessary to reference light paths is set, simplify structure further, low to detection environmental requirement, reduce
Device holistic cost, takies volume less, is more conducive to use in difference detection scene.Further, employing has continuous spectrum
Light source, during spectral information gathers, detection variable is more, and stability is more preferable, and accuracy of detection is the highest, and uses light
The moisture content of crude oil is detected by method, will not be affected by oil density, emulsifying degree, salinity and viscosity,
Capacity of resisting disturbance is higher, can detect moisture content liquid in 0 to 100% four corner, measures scope wider, and stability is more
Height, measurement result is the most more reliable, can meet the requirement of measurement accurate to crude oil water content.
Further, the controller for controlling described light-source head 101 and spectrographic detection head 102 collaborative work is also included
104.Can control while light-source head 101 generates light by controller 104, it is possible to synchronized to receive by spectrographic detection head 102,
Make both collaborative works.
Further, described spectrographic detection head 102 is additionally provided with the second window glass 1023.In the embodiment of the present application
In, first window glass 1013 and the second window glass 1023 can use sapphire glass, and first window glass 1013 is by light
The internal light path in source 101 is kept apart with external environment condition, the second window glass 1023 by the inside light path of spectrographic detection head 102 with outward
Portion is environmentally isolated out.
Each functional module in each embodiment of this utility model can integrate one independent part of formation,
Can also be modules individualism, it is also possible to two or more modules are integrated to form an independent part.
It should be noted that in this article, the relational terms of such as first and second or the like is used merely to a reality
Body or operation separate with another entity or operating space, and deposit between not necessarily requiring or imply these entities or operating
Relation or order in any this reality.And, term " includes ", " comprising " or its any other variant are intended to
Comprising of nonexcludability, so that include that the process of a series of key element, method, article or equipment not only include that those are wanted
Element, but also include other key elements being not expressly set out, or also include for this process, method, article or equipment
Intrinsic key element.In the case of there is no more restriction, statement " including ... " key element limited, it is not excluded that
Including process, method, article or the equipment of described key element there is also other identical element.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for this
For the technical staff in field, this utility model can have various modifications and variations.All in spirit of the present utility model and principle
Within, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.It should be noted that
Arrive: similar label and letter represent similar terms in following accompanying drawing, therefore, are determined in the most a certain Xiang Yi accompanying drawing
Justice, then need not define it further and explain in accompanying drawing subsequently.
The above, detailed description of the invention the most of the present utility model, but protection domain of the present utility model does not limit to
In this, any those familiar with the art, in the technical scope that this utility model discloses, can readily occur in change
Or replace, all should contain within protection domain of the present utility model.Therefore, protection domain of the present utility model should be described with power
The protection domain that profit requires is as the criterion.
Claims (10)
1. a near-infrared crude oil water content detection device, it is characterised in that including: at light-source head, spectrographic detection head and signal
Reason circuit, wherein:
Described light-source head and spectrographic detection head are immersed in flow cell respectively, and position is relative；
Described light-source head launches the detection light beam with continuous spectrum；
Described spectrographic detection head receives the detection light beam after crude oil to be measured absorbs, and obtains the spectrum letter of described detection light beam
Breath, described spectrographic detection head includes linear variable filter and photodetector array, wherein:
Described linear variable filter fits with the photosurface of described photodetector array, described linear variable filter
Spectral transmittance is along described photodetector array orientation linear change, for limiting the described detection with different wave length
Light beam arrives the ad-hoc location of described photodetector array；
Described photodetector array for obtain filtered after the spectral information of described detection light beam；
Described signal processing circuit is connected with described spectrographic detection head, including for according to described spectral information, obtains described
The processor of the moisture content of crude oil to be measured.
Crude oil water content the most according to claim 1 detection device, it is characterised in that also include:
It is connected with described light-source head and spectrographic detection head respectively, controls the control of described light-source head and spectrographic detection head collaborative work
Device processed.
Crude oil water content the most according to claim 1 detection device, it is characterised in that described light-source head includes that light source is with anti-
Penetrate mirror and first window glass, wherein:
Described light source generates detection light beam；
Described reflecting mirror reflects and collimates described detection light beam.
Crude oil water content the most according to claim 3 detection device, it is characterised in that described light-source head also includes the first window
Mouth glass, the detection light beam after collimation is launched by described first window glass.
Crude oil water content the most according to claim 1 detection device, it is characterised in that also set up on described spectrographic detection head
The second window glass, described detection light beam is had to be entered in described spectrographic detection head by described second window glass.
Crude oil water content the most according to claim 5 detection device, it is characterised in that the light of described linear variable filter
Spectral limit is 1200nm to 2500nm.
Crude oil water content the most according to claim 1 detection device, it is characterised in that the spectral region of described light source is
1200 to 2500nm.
Crude oil water content the most according to claim 7 detection device, it is characterised in that described light source is halogen light source.
Crude oil water content the most according to claim 1 detection device, it is characterised in that described photodetector array is line
Battle array InGaAs detector.
Crude oil water content the most according to claim 9 detection device, it is characterised in that
The spectral response range of described photodetector array is 1200nm to 2500nm.
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| CN201620630410.9U CN205808925U (en) | 2016-06-23 | 2016-06-23 | A kind of near-infrared crude oil water content detection device |
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| CN201620630410.9U CN205808925U (en) | 2016-06-23 | 2016-06-23 | A kind of near-infrared crude oil water content detection device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109932323A (en) * | 2019-03-29 | 2019-06-25 | 中央民族大学 | A kind of portable spectroscopic system of multichannel lighted based on timesharing and its detection method |
| CN111175246A (en) * | 2020-01-20 | 2020-05-19 | 通标标准技术服务有限公司 | Detection device for analyzing crude oil quality by adopting near infrared spectrum |
| CN112068276A (en) * | 2020-08-24 | 2020-12-11 | 中国科学院长春光学精密机械与物理研究所 | High-precision wide-environment-adaptability optical lens |
| CN112240870A (en) * | 2019-07-18 | 2021-01-19 | 中国石油天然气股份有限公司 | System and method for measuring water content of crude oil |
| CN114034300A (en) * | 2021-11-09 | 2022-02-11 | 中国电子科技集团公司信息科学研究院 | Optical accelerometer and inertial navigation system |
| CN114047142A (en) * | 2021-12-28 | 2022-02-15 | 西安石油大学 | Real-time detection method and device for water content of oil, water and gas three-phase flow |
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2016
- 2016-06-23 CN CN201620630410.9U patent/CN205808925U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109932323A (en) * | 2019-03-29 | 2019-06-25 | 中央民族大学 | A kind of portable spectroscopic system of multichannel lighted based on timesharing and its detection method |
| CN112240870A (en) * | 2019-07-18 | 2021-01-19 | 中国石油天然气股份有限公司 | System and method for measuring water content of crude oil |
| CN112240870B (en) * | 2019-07-18 | 2023-12-22 | 中国石油天然气股份有限公司 | System and method for measuring water content of crude oil |
| CN111175246A (en) * | 2020-01-20 | 2020-05-19 | 通标标准技术服务有限公司 | Detection device for analyzing crude oil quality by adopting near infrared spectrum |
| CN112068276A (en) * | 2020-08-24 | 2020-12-11 | 中国科学院长春光学精密机械与物理研究所 | High-precision wide-environment-adaptability optical lens |
| CN114034300A (en) * | 2021-11-09 | 2022-02-11 | 中国电子科技集团公司信息科学研究院 | Optical accelerometer and inertial navigation system |
| CN114047142A (en) * | 2021-12-28 | 2022-02-15 | 西安石油大学 | Real-time detection method and device for water content of oil, water and gas three-phase flow |
| CN114047142B (en) * | 2021-12-28 | 2022-04-19 | 西安石油大学 | Method and device for detecting water content of oil-water-gas three-phase flow in real time |
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