CN105717545B - It whether there is the device of liquid metal in a kind of monitoring pipeline - Google Patents
It whether there is the device of liquid metal in a kind of monitoring pipeline Download PDFInfo
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- CN105717545B CN105717545B CN201610095021.5A CN201610095021A CN105717545B CN 105717545 B CN105717545 B CN 105717545B CN 201610095021 A CN201610095021 A CN 201610095021A CN 105717545 B CN105717545 B CN 105717545B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
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Abstract
The present invention provides, with the presence or absence of liquid metal, to solve the problems, such as existing monitoring device installation, difficult in maintenance, measurement sensitivity is low, stability is poor and is difficult to realize mass production etc. in a kind of monitoring pipeline.Device in the monitoring pipeline with the presence or absence of liquid metal includes：Fixed plate is installed in by fastener on pipeline；Eddy current sensor is installed in the fixed plate, and the axis and conduit axis of the eddy current sensor are perpendicular；The eddy current sensor includes housing, is installed in the in vivo winding bobbin of the shell, and primary coil, induction coil and bucking coil are coaxially wound on the winding bobbin；Signal processor is electrically connected with the eddy current sensor.A kind of device monitored in pipeline with the presence or absence of liquid metal is used to monitor in pipeline with the presence or absence of liquid metal.
Description
Technical field
The present invention relates to liquid metal monitoring technical field, more particularly, to golden with the presence or absence of liquid in a kind of monitoring pipeline
The device of category.
Background technology
Electromagnetic pump driven liquid metal heat transfer is a kind of efficient heat transfer mode, available for nuclear reactor, chip cooling technique, flight
The numerous areas such as device active cooling.For example, at present, the 4th generation of technology such as nuclear energy system --- some sodium of liquid sodium cooling fast reactor system return
Road installation electromagnetic pump, however, it is necessary to ensure that the sodium channel in installation electromagnetic pump could allow to start full of Liquid Sodium
Otherwise electromagnetic pump will burn electromagnetic pump.Monitoring device usually is installed on electromagnetic pump exit normal sodium channel, to monitor in pipeline
Whether Liquid Sodium is full of.
Currently, the monitoring device in pipeline with the presence or absence of liquid metal is monitored mainly once to be sensed by differential type mutual inductor
Device, secondary meter and corresponding connecting cable composition, using the principle of coil mutual inductance and eddy current effect realize in pipeline whether
There are liquid metals to be monitored.Its shortcoming one is that the mutual inductor of primary transducer is wound on pipeline (i.e. sensor and pipeline
It is integrated), it installs, is difficult in maintenance；Second is that mutual inductor is two loop constructions, background signal is big, and measurement sensitivity is low and steady
Qualitative difference；Third, because the pipeline there are many bore needs to monitor, primary transducer is difficult to realize mass production.
The content of the invention
It is monitored it is an object of the invention to provide a kind of with the presence or absence of the device of liquid metal in pipeline, it is existing to solve
Monitoring device installation, difficult in maintenance, measurement sensitivity is low, stability is poor and is difficult to realize the technical problems such as mass production.
In order to achieve the above objectives, the embodiment of the present invention uses following technical scheme：
It whether there is the device of liquid metal in a kind of monitoring pipeline, including：
Fixed plate is installed in by fastener on pipeline；
Eddy current sensor is installed in the fixed plate, and the axis and conduit axis of the eddy current sensor are perpendicular；Institute
Stating eddy current sensor includes housing, is installed in the in vivo winding bobbin of the shell, and primary is coaxially wound on the winding bobbin
Coil, induction coil and bucking coil；
Signal processor is electrically connected with the eddy current sensor.
As being further improved for above-mentioned technical proposal, on the winding bobbin, away from pipeline by closely to far coiling institute successively
Induction coil, the primary coil, the bucking coil are stated, and, the induction coil and the asymmetric coiling of the bucking coil
In the both sides of the primary coil.
Further, between the bucking coil and the primary coil be smaller than the induction coil with it is described just
Spacing between grade coil.
As being further improved for above-mentioned technical proposal, on the winding bobbin, away from pipeline by closely to far coiling institute successively
Induction coil, the bucking coil, the primary coil are stated, and, the induction coil and the asymmetric coiling of the bucking coil
In the one side of the primary coil.
As being further improved for above-mentioned technical proposal, the number of turn of the bucking coil is less than the circle of the induction coil
Number.
As being further improved for above-mentioned technical proposal, the fixed plate is c-type plate, and the fastener is identical including two
The anchor ear of structure, the both ends of the c-type plate are fixedly connected with pipeline outer wall by two anchor ears；The center of the c-type plate
Fixed interface is offered, the eddy current sensor is threaded through in the fixed interface.
As being further improved for above-mentioned technical proposal, temperature sensor, the letter are equiped on the eddy current sensor
Number processor is electrically connected with the temperature sensor.
Further, the temperature sensor is thermocouple.
It is monitored an embodiment of the present invention provides a kind of with the presence or absence of the device of liquid metal in pipeline, using modular whirlpool
Eddy current sensor is fixed on the outside of pipeline by flow sensor structure by fixed plate, i.e., so that eddy current sensor is separated with pipeline,
It not only installs, is easy to maintain, moreover it is possible to be adapted to the Monitoring Pinpelines of different bores, it can be achieved that mass production；In addition, currents sensing
The coil of device uses coaxial three-winding winding method, can reduce background signal, and then improve measurement sensitivity and stabilization
The purpose of property.
For the above objects, features and advantages of the present invention is enable to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Affiliated attached drawing, is described in detail below.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution of the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in describing below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is a kind of structural representation for monitoring the device in pipeline with the presence or absence of liquid metal provided in an embodiment of the present invention
Figure one；
Fig. 2 is a kind of structural representation for monitoring the device in pipeline with the presence or absence of liquid metal provided in an embodiment of the present invention
Figure two.
Reference numeral：
1- pipelines, 2- fixed plates, 3- fasteners, 4- eddy current sensors, 5- signal processors, 6- temperature sensors；
41- housings, 42- winding bobbins, 43- primary coils, 44- induction coils, 45- bucking coils.
Specific embodiment
Technical scheme is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's all other embodiments obtained without making creative work, belong to the scope of protection of the invention.
In the description of the present invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instructions such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Convenient for the description present invention and simplify description rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for description purpose, and it is not intended that instruction or hint relative importance.
Embodiment one
Fig. 1 is a kind of structural representation for monitoring the device in pipeline with the presence or absence of liquid metal provided in an embodiment of the present invention
Figure one, Fig. 2 are a kind of structure diagram for monitoring the device in pipeline with the presence or absence of liquid metal provided in an embodiment of the present invention
Two, it please refers to Fig.1 and Fig. 2, the interior device with the presence or absence of liquid metal of the monitoring pipeline includes：
Fixed plate 2 is installed in by fastener 3 on pipeline 1；
Eddy current sensor 4 is installed in the fixed plate 2, and axis and 1 axis of pipeline of the eddy current sensor 4 mutually hang down
Directly；The eddy current sensor 4 includes housing 41, the winding bobbin 42 that is installed in the housing 41, on the winding bobbin 42
Coaxially it is wound with primary coil 43, induction coil 44 and bucking coil 45；
Signal processor 5 is electrically connected with the eddy current sensor 4.
The embodiment of the present invention one provides the device that whether there is liquid metal in monitoring pipeline, using modular vortex
Eddy current sensor is fixed on the outside of pipeline, i.e., so that eddy current sensor is separated with pipeline, no by sensor structure by fixed plate
It only installs, is easy to maintain, moreover it is possible to be adapted to the Monitoring Pinpelines of different bores, it can be achieved that mass production；In addition, eddy current sensor
Coil using coaxial three-winding winding method, background signal can be reduced, and then improve measurement sensitivity and stability
Purpose.
Embodiment two
Fig. 1 is a kind of structural representation for monitoring the device in pipeline with the presence or absence of liquid metal provided in an embodiment of the present invention
Figure one, Fig. 2 are a kind of structure diagram for monitoring the device in pipeline with the presence or absence of liquid metal provided in an embodiment of the present invention
Two, please continue to refer to Fig. 1 and Fig. 2, the device in the monitoring pipeline with the presence or absence of liquid metal includes：
Fixed plate 2 is installed in by fastener 3 on pipeline 1；
Eddy current sensor 4 is installed in the fixed plate 2, and axis and 1 axis of pipeline of the eddy current sensor 4 mutually hang down
Directly；The eddy current sensor 4 includes housing 41, the winding bobbin 42 that is installed in the housing 41, on the winding bobbin 42
Coaxially it is wound with primary coil 43, induction coil 44 and bucking coil 45；
Signal processor 5 is electrically connected with the eddy current sensor 4.
Further, on the winding bobbin 42, away from pipeline 1 as closely to induction coil described in far coiling successively 44, described
Primary coil 43, the bucking coil 45, and, the induction coil 44 and the bucking coil 45 be asymmetric be wound on it is described just
The both sides of grade coil 43, the number of turn of the bucking coil 45 are less than the number of turn of the induction coil 44.
Specifically, above-mentioned asymmetric winding method is preferably：Between the bucking coil 45 and the primary coil 43
The spacing being smaller than between the induction coil 44 and the primary coil 43.
It whether there is the device of liquid metal in monitoring pipeline provided by Embodiment 2 of the present invention, due to bucking coil and just
The spacing being smaller than between induction coil and primary coil between grade coil, so as to reduce background signal, improves survey
Measure sensitivity and stability.Specifically, the spacing between primary coil and induction coil is more than primary coil with arriving compensating line
Spacing between circle, primary coil reasons for its use signal in induction coil are minimized, with the less bucking coil of the number of turn
Primary coil reasons for its use signal in the more induction coil of the number of turn can be offset；Primary coil produces in liquid metal
After raw vortex flow, since the distance of bucking coil to liquid metal is more than induction coil to the distance of liquid metal, the vortex flow
The signal generated in the less bucking coil of the number of turn, the letter generated much smaller than the vortex flow in the more induction coil of the number of turn
Number, therefore, bucking coil is while primary coil reasons for its use signal in induction coil is offset, in liquid metal
The decrease for the useful signal that vortex flow generates in induction coil is little, and then, the coil of eddy current sensor is using coaxial three
Coil winding mode can reduce background signal, achieve the purpose that improve measurement sensitivity and stability.In addition, using modularization
Eddy current sensor structure, eddy current sensor is fixed on the outside of pipeline by fixed plate, i.e., so that eddy current sensor and pipeline
Separation not only installs, is easy to maintain, moreover it is possible to be adapted to the Monitoring Pinpelines of different bores, it can be achieved that mass production.
Embodiment three
Fig. 1 is a kind of structural representation for monitoring the device in pipeline with the presence or absence of liquid metal provided in an embodiment of the present invention
Figure one, please continue to refer to Fig. 1, the device in the monitoring pipeline with the presence or absence of liquid metal includes：
Fixed plate 2 is installed in by fastener 3 on pipeline 1；
Eddy current sensor 4 is installed in the fixed plate 2, and axis and 1 axis of pipeline of the eddy current sensor 4 mutually hang down
Directly；The eddy current sensor 4 includes housing, is installed in the in vivo winding bobbin of the shell, coaxial coiling on the winding bobbin
There are primary coil, induction coil and bucking coil；
Signal processor 5 is electrically connected with the eddy current sensor 4.
Further, on the winding bobbin, away from pipeline as closely to induction coil, the compensating line described in far coiling successively
Circle, the primary coil, and, the induction coil and the asymmetric one side for being wound on the primary coil of the bucking coil,
The number of turn of the bucking coil is less than the number of turn of the induction coil.
Specifically, above-mentioned asymmetric winding method refers to：Spacing between the bucking coil and the primary coil is small
Spacing between the induction coil and the primary coil, the characteristic is by induction coil, bucking coil, primary coil
Overall alignment mode determines.
It whether there is the device of liquid metal in the monitoring pipeline that the embodiment of the present invention three provides, due to bucking coil and just
The spacing being smaller than between induction coil and primary coil between grade coil, so as to reduce background signal, improves survey
Measure sensitivity and stability.Specifically, the spacing between primary coil and induction coil is more than primary coil with arriving compensating line
Spacing between circle, primary coil reasons for its use signal in induction coil are minimized, with the less bucking coil of the number of turn
Primary coil reasons for its use signal in the more induction coil of the number of turn can be offset；Primary coil produces in liquid metal
After raw vortex flow, since the distance of bucking coil to liquid metal is more than induction coil to the distance of liquid metal, the vortex flow
The signal generated in the less bucking coil of the number of turn, the letter generated much smaller than the vortex flow in the more induction coil of the number of turn
Number, therefore, bucking coil is while primary coil reasons for its use signal in induction coil is offset, in liquid metal
The decrease for the useful signal that vortex flow generates in induction coil is little, and then, the coil of eddy current sensor is using coaxial three
Coil winding mode can reduce background signal, achieve the purpose that improve measurement sensitivity and stability.In addition, using modularization
Eddy current sensor structure, eddy current sensor is fixed on the outside of pipeline by fixed plate, i.e., so that eddy current sensor and pipeline
Separation not only installs, is easy to maintain, moreover it is possible to be adapted to the Monitoring Pinpelines of different bores, it can be achieved that mass production.
In above three embodiment, specifically, the fixed plate 2 is c-type plate, and the fastener 3 is identical including two
The anchor ear of structure, the both ends of the c-type plate are fixedly connected with pipeline outer wall by two anchor ears；The center of the c-type plate
Fixed interface is offered, the eddy current sensor 4 is threaded through in the fixed interface, i.e., using modular eddy current sensor knot
Eddy current sensor is fixed on the outside of pipeline by structure by fixed plate, i.e., so that eddy current sensor is separated with pipeline, not only install,
It is easy to maintain, moreover it is possible to be adapted to the Monitoring Pinpelines of different bores, it can be achieved that mass production.
In addition, when above-mentioned fixed plate also serves to ensure that installation eddy current sensor every time with fastener, eddy current sensor and pipe
The relative position in road remains unchanged, so as to reduce influence of the installation site to measuring signal.
With continued reference to shown in Fig. 2, to be further reduced influence of the temperature change to eddy current sensor coil, measured with improving
Stability, in above three embodiment, be equiped with temperature sensor on the eddy current sensor, the signal processor with
The temperature sensor electrical connection, for measuring the temperature in eddy current sensor, is further compensate for temperature to eddy current sensor line
The influence of circle improves the stability of measurement, which is preferably thermocouple.
The present invention is conducted heat using liquid metal available for nuclear reactor, chip cooling technique, aircraft active cooling etc. are many
The field of cooling, the liquid metal can be the conjunctions such as Liquid Sodium, liquid potassium, liquid state Na-K alloy, liquid gallium, liquid gallium tin
Gold etc.；Chemical industry, printing industry are can also be used for, to whether there is the monitoring of the toxic heavy metals such as liquid lead in pipeline；Also it can use
In casting industry, the monitoring to transporting molten non-ferrous metal in pipeline.
In the description of the present invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；It can
To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical characteristic into
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is not made to depart from various embodiments of the present invention technology
The scope of scheme.
Claims (7)
1. a kind of monitor the device that whether there is liquid metal in pipeline, which is characterized in that including：
Fixed plate is installed in by fastener on pipeline；
Eddy current sensor is installed in the fixed plate, and the axis and conduit axis of the eddy current sensor are perpendicular；The whirlpool
Flow sensor include housing, be installed in the in vivo winding bobbin of the shell, be coaxially wound on the winding bobbin primary coil,
Induction coil and bucking coil；
Signal processor is electrically connected with the eddy current sensor；
The fixed plate is c-type plate, and the fastener includes two mutually isostructural anchor ears, the both ends of the c-type plate and pipeline
Outer wall is fixedly connected by two anchor ears；
The center of the c-type plate offers fixed interface, and the eddy current sensor is threaded through in the fixed interface.
2. it whether there is the device of liquid metal in a kind of monitoring pipeline according to claim 1, which is characterized in that described
On winding bobbin, away from pipeline as closely to induction coil, the primary coil, the bucking coil described in far coiling successively, and,
The induction coil and the asymmetric both sides for being wound on the primary coil of the bucking coil.
3. it whether there is the device of liquid metal in a kind of monitoring pipeline according to claim 2, which is characterized in that described
The spacing being smaller than between the induction coil and the primary coil between bucking coil and the primary coil.
4. it whether there is the device of liquid metal in a kind of monitoring pipeline according to claim 1, which is characterized in that described
On winding bobbin, away from pipeline as closely to induction coil, the bucking coil, the primary coil described in far coiling successively, and,
The induction coil and the asymmetric one side for being wound on the primary coil of the bucking coil.
5. it whether there is the device of liquid metal in a kind of monitoring pipeline according to claim 3 or 4, which is characterized in that
The number of turn of the bucking coil is less than the number of turn of the induction coil.
6. it whether there is the device of liquid metal in a kind of monitoring pipeline according to claim 1, which is characterized in that described
Temperature sensor is equiped on eddy current sensor, the signal processor is electrically connected with the temperature sensor.
7. it whether there is the device of liquid metal in a kind of monitoring pipeline according to claim 6, which is characterized in that described
Temperature sensor is thermocouple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610095021.5A CN105717545B (en) | 2016-02-22 | 2016-02-22 | It whether there is the device of liquid metal in a kind of monitoring pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610095021.5A CN105717545B (en) | 2016-02-22 | 2016-02-22 | It whether there is the device of liquid metal in a kind of monitoring pipeline |
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| Publication Number | Publication Date |
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| CN105717545A CN105717545A (en) | 2016-06-29 |
| CN105717545B true CN105717545B (en) | 2018-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610095021.5A Active CN105717545B (en) | 2016-02-22 | 2016-02-22 | It whether there is the device of liquid metal in a kind of monitoring pipeline |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115326321A (en) * | 2022-08-01 | 2022-11-11 | 中广核研究院有限公司 | Mutual inductance type liquid metal leakage monitoring device and application thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| UST921015I4 (en) * | 1972-09-13 | 1974-04-16 | Nuclear reactor corii cooling arrangement | |
| DE2905070A1 (en) * | 1979-02-10 | 1980-08-14 | Kernforschungsz Karlsruhe | FLOW MEASURING DEVICE |
| CN2115521U (en) * | 1992-01-24 | 1992-09-09 | 天津市自动化仪表三厂 | Insert type electromagnetic flow sensor |
| CN2318619Y (en) * | 1998-02-12 | 1999-05-12 | 姜虹 | Vortex metal surface position detection device |
| CN103134565A (en) * | 2011-12-02 | 2013-06-05 | 衡阳镭目科技有限责任公司 | Vortex type metal liquid level detection device |
| CN104215688B (en) * | 2014-08-22 | 2016-09-21 | 国家电网公司 | Can split high voltage transmission line online electromagnetic nondestructive device |
| CN105548351A (en) * | 2016-02-22 | 2016-05-04 | 衡阳镭目科技有限责任公司 | Device for monitoring existence of liquid metal in pipeline |
| CN205562470U (en) * | 2016-02-22 | 2016-09-07 | 衡阳镭目科技有限责任公司 | Device that has or not liquid metal in monitoring pipe says |
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2016
- 2016-02-22 CN CN201610095021.5A patent/CN105717545B/en active Active
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Effective date of registration: 20190701 Address after: 102400 No. 1 Sanqiang Road, Xinzhen, Fangshan District, Beijing Patentee after: China Institute of Atomic Energy Address before: 421001 No. 21 Furong Road, Xiangxiang District, Hengyang City, Hunan Province Co-patentee before: Tian Li Patentee before: Tian Zhiheng Co-patentee before: Tian Lu |