CN108195896A - A kind of staggered electrode formula capacitance chromatography imaging device applied to cryogen - Google Patents
A kind of staggered electrode formula capacitance chromatography imaging device applied to cryogen Download PDFInfo
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- CN108195896A CN108195896A CN201711264164.5A CN201711264164A CN108195896A CN 108195896 A CN108195896 A CN 108195896A CN 201711264164 A CN201711264164 A CN 201711264164A CN 108195896 A CN108195896 A CN 108195896A
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- inner layer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
Abstract
The invention discloses one kind to be applied to cryogen staggered electrode formula capacitance chromatography imaging device, the capacitance chromatography imaging measured applied to the monitoring of profound hypothermia fluid (such as liquid nitrogen (~78K), liquid oxygen (~90K)) Bottomhole pressure flow pattern and void fraction.The device uses the mode of electrode slice arrangement straggly so that span summation of the electrode on circumferential direction is up to 360 ° so that can ensure that every plate electrode has maximum span while pole piece quantity is increased.The characteristics of being more than metal using polytetrafluoroethylene (PTFE) shrinkage under cryogen makes stop collar using polytetrafluoroethylene (PTFE) and holding jacket fastens pole piece, ensure that the rigging position of pole piece is fixed.This cryogen capacitance chromatography imaging device has the characteristics that：It is simple in structure, fast demountable；Available for the wide range from room temperature to profound hypothermia, repeatedly significantly temperature cycles do not influence measurement accuracy；Pole piece coverage rate is big, and it is good to measure imaging precision height, structure electromagnetic shielding effect.
Description
Technical field
It is applied to the present invention relates to cryogenic refrigeration engineering technology and sensor science and technology field more particularly to one kind low
Staggered electrode formula capacitance chromatography imaging (ECT) device of warm fluid.
Background technology
Two-phase flow often occurs in the fluids such as chemical industry, space division related industries in pipe, is related to design optimization and operation peace
Entirely, it is therefore significant to the detection of two distributed mutuallies.Capacitance chromatography imaging (Electrical Capacitance
Tomography, ECT) technology, there are different total dielectric constants using phase contents different in infinitesimal in field, pass through survey
The capacitance of multi-pole-piece between any two is measured, the distributed mutually of fluid in infinitesimal each in field is solved into using inversion algorithm
Picture is a kind of measuring technique of non-intrusion type, and with response speed block, stream field is noiseless, can obtain phase content and phase simultaneously
The advantages that distributed data, is widely studied and is applied in room temperature fluids industry at present.
Larger different from room temperature fluid gas-liquid dielectric constant difference, cryogen liquid-gas dielectric constant ratio is generally less than
1.5, imaging results are extremely sensitive for measurement noise, have very high requirement to the arrangement precision of pole piece, in order to ensure to have compared with
Good imaging effect, needs to build good electromagnetic armouring structure.And due to metal and nonmetallic shrinking percentage at low temperature
Differ larger, traditional bonding or by ablation of metals in the pole piece installation method of nonmetallic surface, pine will be easily lead to
De- or even nonmetal pipeline is generated rupture by metal thermal stress.In addition, embrittlement easily occurs under nonmetal pipeline low temperature.
The present invention is directed to the phase content measuring technique needs of cryogen, under the physical property itself and cryogen that integrate cryogen
Material property, carry out invention design.
Zhejiang University freezes successive with low temperature research institute Zhang little Bin, Chen Jianye, Wang Yuchen, Xie Huangjun [1] [2] [3] et al.
To being applied to two pole piece capacitance sensors of cryogen two phase flow void fraction measurement and suitable for cryogen distributed mutually and sky
The electrical capacitance tomography that bubble rate measures has carried out theoretical and experiment research.The old experiment for building industry shows secondly pole piece is electric
Hold sensor to can be controlled within 15% the measurement error of cryogen void fraction in pipe, but wrapped up outside this sensor
Two electrode slices, also do not take electromagnetic armouring structure, huge with architectural difference of the present invention.Xie Huangjun is to being applied to low temperature stream
The electrical capacitance tomography of bulk measurement has carried out theoretical validation, it is found that the result of its numerical experiment is preferable, but article does not relate to
And it is directed to the concrete structure design of the capacitance tomography sensor of cryogen two-phase flow measurement.Filippov etc.[4]It grinds
Study carefully and measured cryogen two phase flow void fraction using radio frequency sensor, the results showed that the measurement accuracy of radio frequency sensor is reachable
1.5%, it uses entirely different principle and structure with the present invention.
Chinese patent CN100412534C discloses a kind of capacitance chromatography imaging device that should be used for microchannel, the biography
Sensor is intended to make up the demand of ECT sensor film thickness measurement of two phase flow in minute yardstick down tube.In the invention, electrode is set
A part for pipeline is calculated as, is in direct contact fluid, pole piece, which is on same anchor ring, with structure of the present invention, larger difference.
Chinese patent CN102364420B discloses a kind of high-precision ECT intelligence sensors, the Sensor section of the invention
It is punched on isolated pipe, electrode slice is in direct contact fluid, is bolted electrode slice, with having in structure of the present invention
Larger difference.
Chinese patent CN104655692B discloses a kind of knot of the ECT sensor using two layers of frame fixed electrode film
Structure designs, which is mounted on inside casing, and shielding construction is mounted on outline border and is corresponded with pole piece, with the present invention
There is larger difference in structure.
Chinese patent CN106932446A discloses a kind of ECT sensor that built-in electrode is equipped in pipe, the invention
In, there is partial electrode piece to be mounted on inside pipeline, applicable pipeline configuration is the pipeline for having concentric pipes structure, with this hair
It is bright that there is larger difference in structure.
Chinese patent CN103454318B discloses a kind of capacitance tomography sensor with Double layer rotating electrode,
Its rotatable pipe using two coaxial different diameters, the capacitance that electrode is placed in progress multi-angle on rotation pipe are surveyed
Amount, which adopts is fixed on pipe wall and with rotary structure, has in structure with the present invention in the method for paste
Larger difference.
Chinese patent CN20485537U discloses a kind of plane capacitance chromatography sensor, and electrode slice is using flat in the invention
The arrangement mode of face array has larger difference with the present invention in structure.
United States Patent (USP) US8614707B2 discloses a kind of three-dimensional capacitance tomography sensor design in real time, the patent pair
Design is optimized in relative position relation between the shape and structure and pole piece of electrode slice, not to the mounting means of electrode slice
And device concrete structure is designed, and electrode slice is also distributed arrangement in the axial direction, it is larger with having in structure of the present invention
Difference.
United States Patent (USP) US7496450B2 discloses a kind of multiphase-flow imaging monitoring side based on electrical capacitance tomography
Method, the patent specify the distribution mode of sensor but the mounting structure of sensor are not designed, and electrode slice is in
On same anchor ring, there are larger differences with this patent.
United States Patent (USP) US8461852B2 disclose it is a kind of based on electrical capacitance tomography to fluid bed endoparticle point
The method that cloth is monitored, the electrode of ECT sensor are fixed, and electrode slice by the way of pipeline outer wall is embedded to
In same anchor ring, there are larger differences with this patent structure in structure.
In conclusion according to the physical property feature of material each under cryogen and the spy of cryogen liquid phase dielectric constant
Point designs a kind of capacitance chromatography imaging device specifically in cryogen Bottomhole pressure and is necessary, which possesses
The characteristics of non-intrusion measurement, can obtain the situation of the phase content and distributed mutually at section simultaneously.
[1]CHEN J Y,WANG Y C,ZHANG W,et al.Capacitance-based liquid holdup
measurement of cryogenic two-phase flow in a nearly-horizontal
tube.Cryogenics 2017；84:69-75.
[2] Wang Yuchen, Chen Jianye, Xu Lu wait cryogen thickness of liquid film measuring method [J] in pipes of the based on capacitance method
Journal of Zhejiang university:Engineering version, 2016,50 (10):1855-1858.
[3]Xie H,Yu L,Zhou R,et al.Preliminary evaluation of cryogenic two-
phase flow imaging using electrical capacitance tomography[J].Cryogenics,
2017,86.
[4]FILIPPOV Y P,KOVRIZHNYKH A M,MIKLAYEV V M,et al.Metrological
systems for monitoring two-phase cryogenic flows[J].Cryogenics,2000,40(4):
279-285.
[5]FILIPPOV Y P.How to measure void fraction of two-phase cryogenic
flows[J]. Cryogenics,2001,41(5):327-334.
[6]FILIPPOV Y P,KAKORIN I D,KOVRIZHNYKH A M.New solutions to produce
a cryogenic void fraction sensor of round cross-section and its applications.
Cryogenics 2013；57:55-62.
Invention content
The present invention provides a kind of staggered electrode formula capacitance chromatography imaging (ECT) device applied to cryogen, the device
It can transfer data on computer by measuring the capacitance between electrode slice two-by-two, utilize corresponding inversion algorithm[3]To pipe
The void fraction of interior cryogen two phase flow measures, and can be to provide the situation of distributed mutually.The device has non-intruding
It is the characteristics of formula, simple in structure, fast demountable；Available for the wide range from room temperature to profound hypothermia, repeatedly significantly temperature is followed
Ring does not influence measurement accuracy；Pole piece coverage rate is big, and it is good to measure imaging precision height, structure electromagnetic shielding effect.
Technical scheme is as follows：
It is disclosed by the invention be applied to cryogen staggered electrode formula capacitance chromatography imaging device include inner layer electrode slice,
Outer electrode piece, stop collar, holding jacket, electro-magnetic shielding cover, the first shading ring, secondary shielding ring and shielding line；
The inner and outer surfaces digging of stop collar has multiple grooves, and surfaces externally and internally groove circumferential direction interlocks arranged for interval, and described is interior
The shape size of outer surface groove is identical with inner layer electrode slice, outer electrode piece respectively；And respectively with inner layer electrode slice, outer layer
Electrode slice is fitted close；Stop collar forms cylindrical structure, the core and inner layer of shielding line with inner layer electrode slice, outer electrode piece
Electrode slice, the connection of outer electrode piece；The cylindrical structure tight test segment pipe；The holding jacket package cylinder
Structure, electro-magnetic shielding cover package holding jacket；First shading ring, secondary shielding ring are close to axial two ends of electro-magnetic shielding cover respectively
Face；Stop collar is provided with fairlead by the end face of the first shading ring side, and line corresponding with the fairlead is provided on the first shading ring
Hole is drawn for shielding line.
Preferably, the inner layer electrode slice has multi-disc, and outer electrode piece has multi-disc, and the two quantity is equal, axial length
It is equal with thickness, outer electrode piece internal diameter R, inner layer electrode slice internal diameter r, inner layer electrode slice thickness d three meet R- (r+d)≤
1mm；
Preferably, the matching relationship of the inner layer electrode slice and outer electrode piece is：The two is coaxial, between being on circumferential direction
Every being interspersed, consecutive roots piece end face is in same and crosses in cross-sectional centerline, and all pole piece span summations are 360 °；Inner layer
Among the lateral surface of electrode slice, semicircle wire casing is provided among the medial surface of outer electrode piece, shielding wire core is fitted tightly over line
On slot.
Preferably, stop collar is made of polytetrafluoroethylene (PTFE), and internal diameter is equal to inner layer electrode slice internal diameter, and outer diameter is equal to outer layer
Electrode slice outer diameter, axial length are more than the length of inner layer electrode slice and outer electrode piece, stop collar and inner layer electrode slice and outer layer
Semicircle wire casing is provided on the matched surface of wire casing of electrode slice, forms complete circle fairlead, stop collar wherein end face is provided with
The fairlead, the lead hole site are matched with the wire casing of inner layer electrode slice and outer electrode piece.
Preferably, holding jacket is made of polytetrafluoroethylene (PTFE), cylindrical, outside tight stop collar and outer electrode piece
Surface, axial length are equal to stop collar length.
Preferably, electro-magnetic shielding cover is made of conductive magneto-conductive metal, cylindrical, inner surface tight holding jacket, axis
Equal with holding jacket to length, electro-magnetic shielding cover axial direction both ends of the surface are provided with several tapped blind holes.
Preferably, the first shading ring, secondary shielding ring are hollow cylinder, and inner surface is flushed with fluid line, outer surface
It is flushed with electro-magnetic shielding cover, the first shading ring, secondary shielding ring are provided with several tapped through holes, screw thread hole site and electromagnetic screen
Cover the tapped blind hole cooperation on cover.
The device uses the mode of electrode slice arrangement straggly so that span summation of the electrode on circumferential direction makes up to 360 °
Obtaining can ensure that every plate electrode has maximum span while pole piece quantity is increased.Utilize polytetrafluoroethylene (PTFE) under cryogen
Shrinkage is more than the characteristics of metal, makes stop collar using polytetrafluoroethylene (PTFE) and holding jacket fastens pole piece, ensure that pole
The rigging position of piece is fixed.This cryogen capacitance chromatography imaging device has the characteristics that：It is simple in structure, fast demountable；
Available for the wide range from room temperature to profound hypothermia, repeatedly significantly temperature cycles do not influence measurement accuracy；Pole piece coverage rate
Greatly, it is good that imaging precision height, structure electromagnetic shielding effect are measured.
Description of the drawings
Fig. 1 is a kind of main view of staggered electrode formula capacitance chromatography imaging (ECT) device applied to cryogen of the invention
Figure.
Fig. 2 is a kind of A-A of staggered electrode formula capacitance chromatography imaging (ECT) device applied to cryogen of the invention
Cross-sectional view.
Fig. 3 is a kind of left view of staggered electrode formula capacitance chromatography imaging (ECT) device applied to cryogen of the invention
Figure.
Fig. 4 is a kind of B-B of staggered electrode formula capacitance chromatography imaging (ECT) device applied to cryogen of the invention
Cross-sectional view.
Fig. 5 is a kind of staggered electrode formula capacitance chromatography imaging (ECT) device stop collar applied to cryogen of the invention
Isometric view.
Fig. 6 is a kind of staggered electrode formula capacitance chromatography imaging (ECT) device inner layer electricity applied to cryogen of the present invention
Isometric view after pole piece, the cooperation of outer electrode piece.
Fig. 7 is the number of electrode slice and geometric dimension explanation.
In figure：1st, inner layer electrode slice, 2, outer electrode piece, 3, stop collar, 4, holding jacket, 5, electro-magnetic shielding cover, 6, first
Shading ring, 7, secondary shielding ring, 8, shielding line, 9, screw.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in figures 1 to 6, the cryogen staggered electrode formula capacitance chromatography imaging device that is applied to of the invention includes inner layer
Electrode slice 1, outer electrode piece 2, stop collar 3, holding jacket 4, electro-magnetic shielding cover 5, the first shading ring 6, secondary shielding ring 7 and screen
Cover line 8；
The inner and outer surfaces digging of stop collar 3 has multiple grooves, and surfaces externally and internally groove circumferential direction interlocks arranged for interval, and described is interior
The shape size of outer surface groove is identical with inner layer electrode slice 1, outer electrode piece 2 respectively；And respectively with inner layer electrode slice 1, outer
Layer electrode slice 2 is fitted close；Stop collar 3 forms cylindrical structure, the core of shielding line 8 with inner layer electrode slice 1, outer electrode piece 2
It is connect with inner layer electrode slice 1, outer electrode piece 2；The cylindrical structure tight test segment pipe；Holding jacket 4 wraps up institute
The cylindrical structure stated, electro-magnetic shielding cover 5 wrap up holding jacket 4；First shading ring 6, secondary shielding ring 7 are close to be electromagnetically shielded respectively
Axial two end faces of cover 5；Stop collar 3 is provided with fairlead by the end face of 6 side of the first shading ring, is provided on the first shading ring 6 and institute
The corresponding string holes of fairlead is stated, is drawn for shielding line 8.
In the preferred implementation of the present invention, the inner layer electrode slice 1 has multi-disc, and outer electrode piece 2 has multi-disc,
The two quantity is equal, and axial length and thickness are equal, 2 internal diameter R of outer electrode piece, 1 internal diameter r of inner layer electrode slice, inner layer electrode slice
1 thickness d three meets R- (r+d)≤1mm；
In the preferred implementation of the present invention, the matching relationship of the inner layer electrode slice 1 and outer electrode piece 2 is：
The two is coaxial, is distributed on circumferential direction in interleaved, and consecutive roots piece end face is in same and crosses in cross-sectional centerline, and all poles
Piece span summation is 360 °；Semi-circular line is provided among the lateral surface of inner layer electrode slice 1, among the medial surface of outer electrode piece 2
Slot, 8 core of shielding line are fitted tightly on wire casing.
In the preferred implementation of the present invention, stop collar 3 is made of polytetrafluoroethylene (PTFE), and internal diameter is equal to inner layer electrode
1 internal diameter of piece, outer diameter are equal to 2 outer diameter of outer electrode piece, and axial length is more than the length of inner layer electrode slice 1 and outer electrode piece 2,
Stop collar 3 forms complete circle with being provided with semicircle wire casing on the matched surface of wire casing of inner layer electrode slice 1 and outer electrode piece 2
Fairlead, the wherein end face of stop collar 3 are provided with the fairlead, the lead hole site and inner layer electrode slice 1 and outer electrode
The wire casing matching of piece 2.
In the preferred implementation of the present invention, holding jacket 4 is made of polytetrafluoroethylene (PTFE), cylindrical, tight
2 outer surface of stop collar 3 and outer electrode piece, axial length are equal to 3 length of stop collar.
In the preferred implementation of the present invention, electro-magnetic shielding cover 5 is made of conductive magneto-conductive metal, cylindrical, interior
Surface tight holding jacket 4, axial length is equal with holding jacket 4, and the axial both ends of the surface of electro-magnetic shielding cover 5 are provided with several screw threads
Blind hole.
The present invention one be preferably implemented in, the first shading ring 6, secondary shielding ring 7 be hollow cylinder, inner surface
It is flushed with fluid line, outer surface is flushed with electro-magnetic shielding cover 5, and the first shading ring 6, secondary shielding ring 7 are provided with several screw threads
Through-hole, screw thread hole site coordinate with the tapped blind hole on electro-magnetic shielding cover 9.
In the application example of the present invention, inner layer electrode slice, outer electrode piece are made of oxygen-free copper, possess respectively
Eight, and R- (r+d)=1mm；Electro-magnetic shielding cover, the first shading ring, secondary shielding ring, screw are made of carbon steel；Stream will be included
The glass pipe of body is inserted in device endoporus first, and when cryogen flows through, single unit system is operated under cryogen, by poly- four
Stop collar made of vinyl fluoride and holding jacket generate contraction radially so that inner layer electrode slice is close to tube wall, outer electrode piece
Position is also fastened, and is shielded and is welded between wire core and electrode slice using brazing, data are drawn.
As shown in fig. 7, during actual operation, first using voltage U to pole piece #1 to encourage, remaining pole piece keeps 0 potential,
Measure respectively at this time obtain #1-#2, #1-#3, #1-#4 ..., the capacitance between #1-#16 pole pieces pair, then using voltage U
Encourage pole piece 2, measure #2-#3, #2-#4 ..., the capacitance between #2-#16 pole pieces, and so on.It should be noted that two
Do not repeat capacitance measurement between the combination of two pole pieces, i.e., when pole piece #1 is encouraged, capacitance measurement finishes between #1-#2, and works as
Pole piece #2 no longer measures the capacitance between #2-#1 when being energized.Sensor is known as one from acquisition capacitance to inverting into piece image
Task, therefore, for a 16 electrode ECT sensors, each task can be obtained after 120 capacitance measured values are used for
Continuous inversion imaging.Shielding case, the first shielding, secondary shielding ring ring and shielding line shielded layer are required to keep ground connection.
When being solved to sensitive field, following understanding should be made to this arrangement of electrode slice：It is equivalent to
It is in radiusPosition at be provided with one circle the sum of electrode slice, electrode slice span be 360 °, between pole piece and pole piece
Without the conducting that is connected in side end, but separated by a thickness for infinitesimal insulating layer.
Above-described specific embodiment, to the structure of apparatus of the present invention, technical solution and operation in actual use
Mode has been further described, and what is understood should be, the foregoing is merely specific embodiments of the present invention, not
For limiting the present invention, but within the spirit and principles in the present invention, any modification for being made, equivalent replacement, improvement etc.,
It should be included within protection scope of the present invention.
Claims (7)
1. one kind is applied to cryogen staggered electrode formula capacitance chromatography imaging device, it is characterised in that including inner layer electrode slice
(1), outer electrode piece (2), stop collar (3), holding jacket (4), electro-magnetic shielding cover (5), the first shading ring (6), secondary shielding ring
(7) and shielding line (8)；
The inner and outer surfaces digging of stop collar (3) has multiple grooves, and surfaces externally and internally groove circumferential direction interlocks arranged for interval, and described is inside and outside
The shape size of surface groove is identical with inner layer electrode slice (1), outer electrode piece (2) respectively；And respectively with inner layer electrode slice
(1), outer electrode piece (2) is fitted close；Stop collar (3) forms cylindrical structure with inner layer electrode slice (1), outer electrode piece (2),
The core of shielding line (8) is connect with inner layer electrode slice (1), outer electrode piece (2)；The cylindrical structure tight test section
Pipeline；Holding jacket (4) the package cylindrical structure, electro-magnetic shielding cover (5) package holding jacket (4)；First shading ring (6),
Two shading rings (7) are close to axial two end faces of electro-magnetic shielding cover (5) respectively；Stop collar (3) is by the end face of the first shading ring (6) side
Fairlead is provided with, string holes corresponding with the fairlead is provided on the first shading ring (6), is drawn for shielding line (8).
2. as described in claim 1 a kind of applied to cryogen staggered electrode formula capacitance chromatography imaging device, feature exists
There is multi-disc in the inner layer electrode slice (1), outer electrode piece (2) has multi-disc, and the two quantity is equal, axial length and thickness phase
Deng, outer electrode piece (2) internal diameter R, inner layer electrode slice (1) internal diameter r, inner layer electrode slice (1) thickness d three meet R- (r+d)≤
1mm。
3. as described in claim 1 a kind of applied to cryogen staggered electrode formula capacitance chromatography imaging device, feature exists
It is in the inner layer electrode slice (1) and the matching relationship of outer electrode piece (2)：The two is coaxial, in interleaved point on circumferential direction
Cloth, consecutive roots piece end face are in same and cross in cross-sectional centerline, and all pole piece span summations are 360 °；Inner layer electrode slice (1)
Lateral surface among, among the medial surface of outer electrode piece (2) be provided with semicircle wire casing, shielding line (8) core fits closely online
On slot.
4. as described in claim 1 a kind of applied to cryogen staggered electrode formula capacitance chromatography imaging device, feature exists
In stop collar (3) is made of polytetrafluoroethylene (PTFE), and internal diameter is equal to inner layer electrode slice (1) internal diameter, and outer diameter is equal to outer electrode piece
(2) outer diameter, axial length are more than the length of inner layer electrode slice (1) and outer electrode piece (2), stop collar (3) and inner layer electrode slice
(1) and on the matched surface of wire casing of outer electrode piece (2) semicircle wire casing is provided with, forms complete circle fairlead, stop collar (3)
Wherein end face is provided with the fairlead, the lead hole site and inner layer electrode slice (1) and the wire casing of outer electrode piece (2)
Match.
5. as described in claim 1 a kind of applied to cryogen staggered electrode formula capacitance chromatography imaging device, feature exists
In, holding jacket (4) is made of polytetrafluoroethylene (PTFE), cylindrical, tight stop collar (3) and outer electrode piece (2) outer surface,
Axial length is equal to stop collar (3) length.
6. as described in claim 1 a kind of applied to cryogen staggered electrode formula capacitance chromatography imaging device, feature exists
In electro-magnetic shielding cover (5) is made of conductive magneto-conductive metal, cylindrical, inner surface tight holding jacket (4), axial length
Equal with holding jacket (4), electro-magnetic shielding cover (5) axial direction both ends of the surface are provided with several tapped blind holes.
7. as described in claim 1 a kind of applied to cryogen staggered electrode formula capacitance chromatography imaging device, feature exists
In the first shading ring (6), secondary shielding ring (7) are hollow cylinder, and inner surface is flushed with fluid line, outer surface and electromagnetism
Shielding case (5) flushes, and the first shading ring (6), secondary shielding ring (7) are provided with several tapped through holes, screw thread hole site and electromagnetism
Tapped blind hole cooperation on shielding case (9).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109374693A (en) * | 2018-10-15 | 2019-02-22 | 浙江大学 | Cryogen void fraction measuring device and method in a kind of pipe |
| CN110470704A (en) * | 2019-08-27 | 2019-11-19 | 浙江大学 | A kind of capacitance tomography sensor applied to cryogen two phase flow phase distribution measuring |
| CN113049642A (en) * | 2021-03-10 | 2021-06-29 | 上海交通大学 | Non-contact type void fraction measuring system and method suitable for narrow rectangular channel |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1395093A (en) * | 2001-07-06 | 2003-02-05 | 中国科学院工程热物理研究所 | Square capacitance chromatographic imaging sensor |
| CN1920545A (en) * | 2005-08-25 | 2007-02-28 | 中国科学院工程热物理研究所 | Micro capacitive chromatographic imaging sensor |
| CN101025404A (en) * | 2007-03-05 | 2007-08-29 | 天津大学 | ECT/ERT double mode-state imaging system cross-type composite array sensor |
| CN101221036A (en) * | 2008-01-25 | 2008-07-16 | 太原理工大学 | Capacitance chromatography imaging type ice thickness detecting device and its detecting method |
| CN102156225A (en) * | 2011-03-18 | 2011-08-17 | 华北电力大学 | Capacitance tomography sensor with powder dielectric coefficient variation measurement electrode |
| CN103439374A (en) * | 2013-08-23 | 2013-12-11 | 华北电力大学 | Combined printing circuit board electric capacitance tomography sensor |
| CN103604843A (en) * | 2013-11-27 | 2014-02-26 | 华北电力大学 | Electrical capacitance tomography sensor used in submerged environment |
| CN105308445A (en) * | 2013-03-07 | 2016-02-03 | 诺克索莱有限公司 | Method and apparatus for investigating permittivity in a target domain |
| MY157857A (en) * | 2008-06-13 | 2016-07-29 | Univ Malaysia Tech | Low cost ect sensor electrodes design |
| CN105973775A (en) * | 2016-04-29 | 2016-09-28 | 江苏大学 | Apparatus for detecting concentration of powder in spiral conveying tube of bilayer electrode array |
| US20160327503A1 (en) * | 2015-05-07 | 2016-11-10 | Tech4Imaging Llc | Space Adaptive Reconstruction Technique for Adaptive Electrical Capacitance Volume Tomography |
| CN106370705A (en) * | 2016-08-18 | 2017-02-01 | 中国科学院工程热物理研究所 | 3D electric capacitance tomography sensor |
| CN106556629A (en) * | 2015-09-25 | 2017-04-05 | 中国科学院大连化学物理研究所 | A kind of high temperature capacitor tomography sensor and preparation method thereof |
| MY161377A (en) * | 2008-06-13 | 2017-04-14 | Univ Malaysia Teknologi | Portable sensor for electrical capacitance tomography |
| CN106908490A (en) * | 2017-02-24 | 2017-06-30 | 天津大学 | A kind of tomography sensor of variable capacitance |
| CN106932446A (en) * | 2015-12-31 | 2017-07-07 | 中国科学院工程热物理研究所 | A kind of capacitance tomography sensor |
-
2017
- 2017-12-05 CN CN201711264164.5A patent/CN108195896B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1395093A (en) * | 2001-07-06 | 2003-02-05 | 中国科学院工程热物理研究所 | Square capacitance chromatographic imaging sensor |
| CN1920545A (en) * | 2005-08-25 | 2007-02-28 | 中国科学院工程热物理研究所 | Micro capacitive chromatographic imaging sensor |
| CN101025404A (en) * | 2007-03-05 | 2007-08-29 | 天津大学 | ECT/ERT double mode-state imaging system cross-type composite array sensor |
| CN101221036A (en) * | 2008-01-25 | 2008-07-16 | 太原理工大学 | Capacitance chromatography imaging type ice thickness detecting device and its detecting method |
| MY157857A (en) * | 2008-06-13 | 2016-07-29 | Univ Malaysia Tech | Low cost ect sensor electrodes design |
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