CN202285009U - Capacitance sensor for detecting static state crude oil moisture content - Google Patents
Capacitance sensor for detecting static state crude oil moisture content Download PDFInfo
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- CN202285009U CN202285009U CN2011202543108U CN201120254310U CN202285009U CN 202285009 U CN202285009 U CN 202285009U CN 2011202543108 U CN2011202543108 U CN 2011202543108U CN 201120254310 U CN201120254310 U CN 201120254310U CN 202285009 U CN202285009 U CN 202285009U
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- nonmetal
- insulating cylinder
- crude oil
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- interior insulating
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Abstract
The utility model relates to a capacitance sensor for detecting static state crude oil moisture content, which is a sensor for detecting capacitor capacitance changes under conditions of different volume water content and designed by using a character that difference of dielectric constants of water and oil is large. The capacitance sensor is composed of a casing, an inner insulation cylinder, a plurality of pairs of counter electrode groups, a guide line and a nonmetal sample cylinder in clearance fit with the inner insulation cylinder. The nonmetal sample cylinder and a sensor body are designed to be separable to enable direct sampling of the sample cylinder to be possible, the direct sampling can reduce human intervention of samples and improve accuracy and reliability of detection, counter electrodes and media are separated by the nonmetal sample cylinder and the inner insulation cylinder in the sensor, influences of mineralization of water in the media on the dielectric constants are led to be minimum, and strength of the signals is reduced. The capacitance sensor adopts a collocation method of overlapping of a plurality of pairs of counter electrode groups to improve sensitivity and accuracy of the sensor.
Description
One, technical field:
The utility model relates to a kind of capacitive transducer that uses on the static crude oil water content detecting instrument in a kind of oil field, especially a kind of capacitive transducer that detects static crude oil water containing.
Two, background technology:
For the crude oil production management; Crude oil water content is an important underlying parameter; It is measured with control accurately be directly connected to output measurement shoutage and business decision, the business accounting at different levels that is related to the oil field benefit also is related to the timely grasp that the new job well production rate is recovered current intelligence simultaneously.The method of chemically examining for crude oil water containing at present is divided into manual assay substantially and sends out and the electrical characteristics analytic approach; Manual at home at present assay fado is main with the way of distillation; The way of distillation exists complex operation time-consuming wayward; The reliability of analysis data and accuracy depend on operator's sense of responsibility and technical merit to a great extent, and the actual error of water cut test is difficult to guarantee that chemically examining a crude oil sample needs 45-60 branch clock time at least under the uneven condition of many, the wide peoplewares of interface point in the oil field; This method also will consume a large amount of solvent oils simultaneously; The consumption of solvent oil also can threaten the healthy of operator after not only can increasing its volatilization of production cost, and for a large amount of new job brought in wells, moisture test need be encrypted to these wells in order promptly and accurately to hold its output answer situation in the oil field; Way of distillation efficient is low can not in time feed back crude oil water containing information, can increase chemical examination worker's labour intensity again.So the oil field presses for accurate fast and reliable and does not need the moisture method of testing of solvent oil, and capacitance method is exactly a kind of of electrical characteristics analytic approach at present, and the key problem of this method is the capacitive transducer of degree of accuracy height, good stability, the moisture wide ranges of adaptation; The capacitive transducer branch contacts with medium and two kinds of noncontacts at present, and the pole plate of the capacitive transducer of contact directly is inserted into the variation that detects the medium specific inductive capacity in the medium, and there is the problem of bad adaptability in this mode; When moisture when being lower than 30% water be that the influence of disperse phase conduction can be ignored, water percentage is relevant with the distribution of water greater than the connection situation of 30% o'clock water, the influence of conduction is uncertain; It is little when time thes be big; Make the capacitive transducer cisco unity malfunction, when water percentage connection probability of water greater than 40% time strengthens greatly, the resistance of profit admixture obviously descends until the two-plate conducting; Make potential difference (PD) between pole plate in tested crude oil, not set up polarized electric field and make the sensor disablement; For pole plate and the contactless capacitive transducer of medium, its structure is directed to the more of crude oil on-line dynamic measurement at present, and less to the capacitive transducer of static crude oil water containing measurement; Because and insulation can make the signal intensity of its electric capacitance change reduce between the medium; The inner insulating layer of the direct hand capacity sensor of while medium can make the maintenance of sensor become and not only bother but also difficult, and sample of every detection all must carry out cleaning, drying, has reduced detection efficiency like this; Also can cause sensor or supporting with it other circuit and module damage if seal do bad because of seepage; After changing sample over to sensor by collection appearance bucket simultaneously, sample has lost representativeness, makes test result lose meaning.
Three, summary of the invention:
The fundamental purpose of the utility model is to improve the detection efficiency and the accuracy of capacitive transducer.
Another purpose of the utility model is to improve capacitive transducer sensitivity, stability and adaptability.
Utilize the bigger characteristic of the oil and the specific inductive capacity difference of water to design the sensor of a kind of detection condenser capacity under the moisture situation of different volumes to static crude oil; Less to the capacitive transducer of static crude oil water containing detection at present; The capacitive transducer that directly contacts for capacitor plate and medium data when low moisture test are also reliable and stable, but for middle height is moisture just can't operate as normal.The inside surface of the interior insulating cylinder that is adhered to for the insulating coating of the non-contacting capacitive transducer medium of capacitor plate and medium and capacitor plate or with pole plate contacts; Oil sample of every like this detection must clean and dry it; When actual detected, need the crude oil sample in the on-site sampling bucket be changeed simultaneously and pour in the interior insulating cylinder that this its outside surface is attached with capacitor plate and lower end closed; The efficient of crude oil water containing test is reduced simultaneously because the transfer of sample causes this sample to lose representativeness; Its test result can not really reflect the actual moisture of crude oil; Caused the signal weakening that the back sensor capacitance changes in the insulating cylinder in its medium entering owing between capacitor plate, added interior insulating cylinder simultaneously; The unevenness of the distribution of the contained component of medium in interior insulating cylinder simultaneously also makes the jitter poor repeatability, and these all can influence the application of capacitive transducer in static crude oil water containing test.
For effectively solving the above-mentioned technical matters the utility model that exists in the static crude oil water containing test a kind of novel capacitor sensor is provided; It is a kind of capacitive transducer that contains nonmetal appearance bucket; The lead 4 that the composition of this sensor is housing 1, interior insulating cylinder 2, between housing 1 and interior insulating cylinder 2, be provided with the metal polar plate 3 of a pair of face-to-face symmetric arrangement, drawn by each sheet pole plate respectively passes housing 1; Do not contact between said pole plate and the pole plate side yet; It is characterized in that: in interior insulating cylinder 2, be provided with a nonmetal appearance bucket 5, nonmetal appearance bucket 5 is a clearance fit with interior insulating cylinder 2.
Be achieved in that for the detection efficiency that improves capacitive transducer and this utility model of technical matters of accuracy
In interior insulating cylinder 2, be provided with a nonmetal appearance bucket 5 with interior insulating cylinder 2 inboard clearance fit; This nonmetal appearance bucket 5 can be used as special appearance bucket from individual well or pipeline sampling; Lose representational problem with regard to avoiding crude oil sample occurring by being sampled to the sample that conversion appearance bucket occurs when testing and cause like this, for ease of nonmetal kind of bucket 5 taken out from sensor, the length of nonmetal appearance bucket 5 is greater than the length of interior insulating cylinder 2; And after nonmetal appearance bucket 5 inserted by interior insulating cylinder 2 upper ends; The inner bottom surface of nonmetal appearance bucket 5 is in above position, metal polar plate 3 lower surfaces, is provided with the long-pending scale mark 6 of constant volume in the nonmetal appearance bucket 5, and the long-pending scale mark 6 of constant volume is in metal polar plate 3 upper surfaces are higher than housing 1 and interior insulating cylinder 2 with upper/lower positions and nonmetal appearance bucket 5 upper surfaces upper surface; Whole sample medium fluid column is in the electric field of metal polar plate 3 formation; Because nonmetal appearance bucket 5 can be changed,, just can not influence the operate as normal of sensor as long as guarantee that the nonmetal appearance bucket 5 that is provided is same specifications.
For improve capacitive transducer sensitivity, stability and this utility model of adaptive technical matters be achieved in that when capacitive transducer designs be avoid because of sample in moisture rising and of influence and the interference of different salinities to electric capacitance change; Make the whole capacitor sensor not only can operate as normal between low water leg but also all can operate as normal between the 0-100% water leg; Also avoid test result being exerted an influence because of different salinities in moisture; Adopted the insulating Design of pole plate and medium; And the capacitance signal intensity that this design causes weakens; Between housing 1 and interior insulating cylinder 2, be provided with the metal polar plate 3 that is no less than two pairs of face-to-face symmetric arrangement round interior insulating cylinder 2, every pair of pole plate does not contact mutually and arranged crosswise for this reason, and lead 4 identical polars of being drawn by each sheet pole plate adopt parallel way to connect.Be combined in the sensitivity that other circuit module of supporting tester cooperates the capacitive transducer electric capacity signal that causes when can amplified medium is moisture changing to change by many to what metal polar plate 3 formed like this; Simultaneously because these pole plate groups are to be centered around around the medium, the stabilization signal of electric capacitance change can take place to cause because of moisture variation in the operate as normal that will can not influence capacitive transducer for the uneven distribution of medium.In the manufacturing and designing of capacitive transducer, insulating cylinder in said 2 is designed to cylindrical shape for the ease of making; Nonmetal appearance bucket 5 also is designed to cylindrical shape; Said metal polar plate 3 also is designed to circular arc cylinder shape and close attachment in interior insulating cylinder 2 lateral surfaces; The face of cylinder at circular arc cylinder shape metal polar plate 3 places is coaxial with circular interior insulating cylinder 2, and the external diameter of nonmetal appearance bucket 5 is a clearance fit greater than the internal diameter of interior insulating cylinder 2.
As and the supporting capacitive transducer of analyzer of water content can adapt between the moisture test section of 0-100% after adopting above design; Can avoid the influence of moisture different salinities to test result; Can reduce to greatest extent the sample human intervention is improved accuracy of test and confidence level, can realize in test process, thoroughly stopping to use solvent oil when reducing production costs, also to improve chemical examination worker working environment health care condition the fast detecting of different crude oils sample.
Four, description of drawings:
Accompanying drawing 1 is the prior art structural entity cut-away view of the utility model;
Accompanying drawing 2 is that the prior art structure A-A of the utility model is to cut-away view;
Accompanying drawing 3 is one-piece construction cut-away views of the utility model;
Accompanying drawing 4 is that the B-B of the utility model is to being provided with second specific embodiment structure of a pair of pole plate cut-away view;
Accompanying drawing 5 is layering partial cutaway diagrammatic sketch that are provided with a pair of pole plate of the utility model;
Accompanying drawing 6 is that the many C-C to pole plate of being provided with of the utility model are to cut-away view;
Accompanying drawing 7 is that the many C-C that pole plate is contained the lead parallel way of being provided with of the utility model are to cut-away view;
Accompanying drawing 8 is the 3rd specific embodiment structure cut-away views of the utility model capacitive transducer;
Accompanying drawing 9 is whole cut-away views of first specific embodiment of the utility model capacitive transducer;
Accompanying drawing 10 is whole cut-away views of the 4th specific embodiment of the utility model capacitive transducer;
Accompanying drawing 11 is whole cut-away views of second specific embodiment of the utility model capacitive transducer;
Accompanying drawing 12 is that the D-D of first specific embodiment of the utility model capacitive transducer is to cut-away view;
Wherein: insulating cylinder 3 metal polar plates in 1 housing 2
4 leads, 5 nonmetal appearance bucket 6 scale marks.
Five, embodiment:
Because the capacitive transducer of the static crude oil water content of this detection is a kind of capacitive transducer that contains separable nonmetal appearance bucket, makes an explanation for the specific embodiment of the capacitive transducer of the static crude oil water content of this detection below in conjunction with accompanying drawing.
The utility model is to a kind of first embodiment that detects the capacitive transducer of static crude oil water content; It has represented among this embodiment the concrete structure with two metal polar plates accompanying drawing 9, accompanying drawing 12; It also represented among this embodiment to adopt the square nonmetal appearance bucket 5 of straight barrel structure lean on appearance bucket bottom with sensor base the concrete structure when spacing; The composition of this sensor be the bottom back cover square housing 1, square interior insulating cylinder 2, between housing 1 and interior insulating cylinder 2, be provided with the metal polar plate 3 of a pair of face-to-face symmetric arrangement, the lead 4 of being drawn by each sheet pole plate respectively passes housing 1; In square interior insulating cylinder 2, be provided with a square nonmetal appearance bucket 5 with the straight barrel structure of interior insulating cylinder 2 inboard clearance fit; The bottom lower plane of the nonmetal appearance bucket 5 in insulating cylinder 2 backs was seated at the bottom surface in the housing 1 in nonmetal appearance bucket 5 inserted; This moment, nonmetal kind barrel 5 inner bottom surface was higher than the lower plane of metal polar plate 3; Nonmetal appearance bucket 5 inboards indicate the long-pending scale mark 6 of constant volume, and scale mark 6 positions are lower than the last plane of metal polar plate 3.
The utility model is to a kind of second embodiment that detects the capacitive transducer of static crude oil water content, and it has represented among this embodiment the concrete structure with two metal polar plates accompanying drawing 4, accompanying drawing 11.The lead 4 that the composition of this sensor is circular shell 1 that back cover is arranged, circular interior insulating cylinder 2, between housing 1 and interior insulating cylinder 2, be provided with the metal polar plate 3 of a pair of face-to-face symmetric arrangement, drawn by each sheet pole plate respectively passes housing 1; Said metal polar plate 3 is the semi arch cylinder; In interior insulating cylinder 2, be provided with a circular nonmetal appearance bucket 5 with the straight barrel structure of interior insulating cylinder 2 inboard clearance fit; The bottom lower plane of the nonmetal appearance bucket 5 in insulating cylinder 2 backs was seated at the bottom surface in the housing 1 in nonmetal appearance bucket 5 inserted; This moment, nonmetal kind barrel 5 inner bottom surface was higher than the lower plane of metal polar plate 3; Nonmetal appearance bucket 5 inboards indicate the long-pending scale mark 6 of constant volume, and scale mark 6 positions are lower than the last plane of metal polar plate 3.
The utility model is to a kind of the 3rd embodiment that detects the capacitive transducer of static crude oil water content; It has represented among this embodiment the concrete structure with four pairs of metal polar plates accompanying drawing 6, accompanying drawing 7, accompanying drawing 8; It has represented to adopt among this embodiment circular nonmetal kind barrel 5 concrete structure that insert in sensor of upper end for flanged structure accompanying drawing; The composition of this sensor is circular housing 1, circular interior insulating cylinder 2, between housing 1 and interior insulating cylinder 2, has the metal polar plate 3 of four pairs of face-to-face symmetric arrangement, every pair of pole plate not to contact mutually and arranged crosswise around interior insulating cylinder 2 outer wall close attachment, and by the lead 4 that each sheet pole plate is drawn, identical polar adopts the parallel way connection; These leads are respectively Ca1, Ca2, Ca3, Ca4; Draw Ca after the connection, Cb1, Cb2, Cb3, Cb4 draw Cb after the connection; Said metal polar plate 3 is the semi arch cylinder; In interior insulating cylinder 2, being provided with a upper end with interior insulating cylinder 2 inboard clearance fit is circular nonmetal kind of bucket 5 of flanged structure, and the lower plane of nonmetal appearance bucket 5 insertions interior insulating cylinder 2 backs nonmetal appearance bucket 5 upper end flange is seated at the last plane of housing 1 and interior insulating cylinder 2, and the inner bottom surface of at this moment nonmetal appearance bucket 5 is higher than the lower plane of metal polar plate 3; Nonmetal appearance bucket 5 inboards indicate the long-pending scale mark 6 of constant volume, and scale mark 6 positions are lower than the last plane of metal polar plate 3.
The utility model is to a kind of the 4th embodiment that detects the capacitive transducer of static crude oil water content; It has represented among this embodiment the concrete structure with four pairs of metal polar plates accompanying drawing 6, accompanying drawing 7, accompanying drawing 10; Its concrete structure when having represented among this embodiment to adopt the circular nonmetal appearance bucket 5 of straight barrel structure to lean on appearance bucket bottom and sensor base spacing of accompanying drawing; The composition of this sensor is the circular housing 1 of bottom back cover, circular interior insulating cylinder 2, between housing 1 and interior insulating cylinder 2, has the metal polar plate 3 of four pairs of face-to-face symmetric arrangement, every pair of pole plate not to contact mutually and arranged crosswise around interior insulating cylinder 2 outer wall close attachment, and by the lead 4 that each sheet pole plate is drawn, identical polar adopts the parallel way connection; These leads are respectively Ca1, Ca2, Ca3, Ca4; Draw Ca after the connection, Cb1, Cb2, Cb3, Cb4 draw Cb after the connection; Said metal polar plate 3 is the semi arch cylinder; In interior insulating cylinder 2, be provided with a circular nonmetal appearance bucket 5 with the straight barrel structure of interior insulating cylinder 2 inboard clearance fit, the bottom lower plane of the nonmetal appearance bucket 5 in insulating cylinder 2 backs was seated at the bottom surface in the housing 1 in nonmetal appearance bucket 5 inserted, and this moment, the inner bottom surface of nonmetal appearance bucket 5 was higher than the lower plane of metal polar plate 3; Nonmetal appearance bucket 5 inboards indicate the long-pending scale mark 6 of constant volume, and scale mark 6 positions are lower than the last plane of metal polar plate 3.
Claims (4)
1. capacitive transducer that detects static crude oil water content; By housing (1), interior insulating cylinder (2), insulating cylinder (2) outside is provided with the metal polar plate (3) of a pair of face-to-face symmetric arrangement in housing (1), the lead (4) of being drawn by each sheet pole plate respectively passes housing (1); Do not contact between said pole plate and pole plate; It is characterized in that: in interior insulating cylinder (2), be provided with a nonmetal appearance bucket (5), nonmetal appearance bucket (5) is a clearance fit with interior insulating cylinder (2).
2. a kind of capacitive transducer that detects static crude oil water content according to claim 1; It is characterized in that: the inner bottom surface that nonmetal appearance bucket (5) inserts the nonmetal appearance bucket in back (5) by interior insulating cylinder (2) upper end is in above position, metal polar plate (3) lower surface; Be provided with the long-pending scale mark (6) of constant volume in the nonmetal appearance bucket (5); Constant volume amasss scale mark (6) and is in metal polar plate (3) upper surface with upper/lower positions, and nonmetal appearance bucket (5) upper surface is higher than the upper surface of housing (1) and interior insulating cylinder (2).
3. a kind of capacitive transducer that detects static crude oil water content according to claim 1; It is characterized in that: in housing (1), be provided with the metal polar plate (3) that is no less than two pairs of face-to-face symmetric arrangement round interior insulating cylinder (2) lateral surface; Every pair of pole plate does not contact mutually and arranged crosswise, and lead (4) identical polar of being drawn by each sheet pole plate adopts parallel way to connect.
4. according to claim 1 or 2 or 3 described a kind of capacitive transducers that detect static crude oil water content; It is characterized in that: insulating cylinder (2) is cylindrical shape in said; Nonmetal appearance bucket (5) also is a cylindrical shape; Said metal polar plate (3) be circular arc cylinder shape and close attachment in interior insulating cylinder (2) lateral surface, the face of cylinder at circular arc cylinder shape metal polar plate (3) place is coaxial with circular interior insulating cylinder (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202543108U CN202285009U (en) | 2011-07-19 | 2011-07-19 | Capacitance sensor for detecting static state crude oil moisture content |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202543108U CN202285009U (en) | 2011-07-19 | 2011-07-19 | Capacitance sensor for detecting static state crude oil moisture content |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202285009U true CN202285009U (en) | 2012-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202543108U Expired - Fee Related CN202285009U (en) | 2011-07-19 | 2011-07-19 | Capacitance sensor for detecting static state crude oil moisture content |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202285009U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288651A (en) * | 2011-07-19 | 2011-12-21 | 张兵 | Capacitance sensor for detecting moisture content of static crude oil |
| CN105874325A (en) * | 2014-01-07 | 2016-08-17 | 索尼公司 | Cartridge, kit comprising cartridge, electric measuring apparatus, and electric measuring method |
| CN110006961A (en) * | 2019-03-29 | 2019-07-12 | 深圳市智水小荷技术有限公司 | Fat content detection method |
-
2011
- 2011-07-19 CN CN2011202543108U patent/CN202285009U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288651A (en) * | 2011-07-19 | 2011-12-21 | 张兵 | Capacitance sensor for detecting moisture content of static crude oil |
| CN105874325A (en) * | 2014-01-07 | 2016-08-17 | 索尼公司 | Cartridge, kit comprising cartridge, electric measuring apparatus, and electric measuring method |
| US10302584B2 (en) | 2014-01-07 | 2019-05-28 | Sony Corporation | Cartridge, kit comprising cartridge, electric measuring apparatus, and electric measuring method |
| CN105874325B (en) * | 2014-01-07 | 2020-03-20 | 索尼公司 | Cartridge, kit containing cartridge, electrical measurement apparatus, and electrical measurement method |
| US11125709B2 (en) | 2014-01-07 | 2021-09-21 | Sony Corporation | Cartridge, kit comprising cartridge, electric measuring apparatus, and electric measuring method |
| CN110006961A (en) * | 2019-03-29 | 2019-07-12 | 深圳市智水小荷技术有限公司 | Fat content detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120627 Termination date: 20170719 |