CN106932466A - The monitoring device of conductive body in a kind of pipeline - Google Patents
The monitoring device of conductive body in a kind of pipeline Download PDFInfo
- Publication number
- CN106932466A CN106932466A CN201710222095.5A CN201710222095A CN106932466A CN 106932466 A CN106932466 A CN 106932466A CN 201710222095 A CN201710222095 A CN 201710222095A CN 106932466 A CN106932466 A CN 106932466A
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- China
- Prior art keywords
- pipeline
- eddy current
- current sensor
- coil
- monitoring
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/74—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables of fluids
Abstract
The invention provides a kind of monitoring device of conductive body in pipeline, including flow through conductive body monitoring pipeline, with reference to pipeline, pipeline fixing device, be provided with the eddy current sensor of the first U-shaped mouth and the second U-shaped mouth, and the signal processor electrically connected with the eddy current sensor.Wherein eddy current sensor is provided with the first U-shaped mouth and the second U-shaped mouth, monitoring pipeline and will be respectively embedded into reference to pipeline U-shaped intraoral to the U-shaped mouth of eddy current sensor first and second, i.e., currents sensing can be separated with pipeline, installs, easy to maintenance；With reference to the setting of pipeline, measurement sensitivity, the stability for reducing drift, improving system can be improved.
Description
Technical field
The present invention relates to conductive body monitoring field, in particular to a kind of monitoring device of conductive body in pipeline.
Background technology
The current application that conductive body is conveyed in pipeline is more and more, for example, using conductive liquid metal as cooling
Agent, it is quite varied in numerous areas applications such as nuclear reactor, chip cooling technique, aircraft active coolings, wherein, the conductive liquid
State metal has sodium, potassium, lead, Na-K alloy, sn-bi alloy, lead bismuth alloy of liquid etc.；By conductive liquid or gas-solid mixing body
Another container or station are delivered to from a container or station, it is more in sector applications such as metallurgy, chemical industry, printings, wherein, lead
The liquid of electricity has aluminium water, copper water etc., and gas-solid mixing body has a conduction powder thing solids movement such as compressed gas-driven graphite powder and group
Into mixture.Because pipeline is typically opaque and sealing, whether people are difficult to determine flow through conductive body in pipeline, from
And cause some security incidents.For example, in the field by the use of liquid metal sodium as cooling agent, generally promoting liquid with electromagnetic pump
State metallic sodium flows in pipeline, if also just not starting electromagnetic pump full of liquid metal sodium in the pipeline of electromagnetism pump discharge,
The security incident of electromagnetic pump will be caused to burn.Therefore, the conductive body flowed through in pipeline is monitored and is extremely necessary.
Currently, liquid metal monitoring device in existing mutual inductance type pipeline, mainly by primary coil, secondary coil, sinusoidal friendship
The composition such as time-dependent current source and signal reception and processing system, it is right that the device is realized using the principle of coil mutual inductance and eddy current effect
Whether there is liquid metal in pipeline to be monitored, it has the disadvantage that primary coil, secondary coil are wound on pipeline（I.e. sensor with pipe
Road is integrated）, install, it is difficult in maintenance；Additionally, also by be arranged on pipeline outer and eddy current sensor perpendicular to the pipeline,
And the signal processor being connected electrically whether there is the technology of liquid metal to monitor in pipeline, its have the disadvantage measurement sensitivity it is low,
Drift is big, stability is poor.
The content of the invention
It is an object of the invention to provide a kind of monitoring device of conductive body in pipeline, existing monitoring device peace is intended to solve
The technical problem such as dress, difficult in maintenance, measurement sensitivity is low, drift is big, stability difference.
Therefore, the embodiment of the invention provides a kind of monitoring device of conductive body in pipeline, including flow through the conduction
The monitoring pipeline of object, with reference to pipeline, pipeline fixing device, be provided with the eddy current sensor of the first U-shaped mouth and the second U-shaped mouth, with
And the signal processor electrically connected with the eddy current sensor, wherein, the monitoring pipeline is through the of the eddy current sensor
One U-shaped mouth is simultaneously fixed on the eddy current sensor by the pipeline fixing device, and the reference pipeline passes through the vortex
Second U-shaped mouth of sensor is simultaneously fixed on the eddy current sensor, the eddy current sensor by the pipeline fixing device
Interior to be coaxially wound with primary coil, induction coil and bucking coil, the first U-shaped mouth is located at the primary coil and induction coil
Between, the second U-shaped mouth is located between the primary coil and bucking coil.
Further, the reference pipeline is parallel to the monitoring pipeline, and perpendicular to the primary of the eddy current sensor
The axis of coil, induction coil and bucking coil.
Further, the diameter of the reference pipeline, wall thickness, material are identical with the monitoring pipeline.
Further, bucking coil to the spacing of primary coil is equal to induction coil to primary coil in eddy current sensor
Spacing.
Further, it is provided with iron core in the primary coil, induction coil and bucking coil.
Further, the eddy current sensor also includes the temperature sensor with signal transacting mechatronics.
Further, the temperature sensor is thermocouple.
In monitoring device provided in an embodiment of the present invention, eddy current sensor is provided with the first U-shaped mouth and the second U-shaped mouth, will
Monitoring pipeline and it is respectively embedded into reference to pipeline U-shaped intraoral to the U-shaped mouth of eddy current sensor first and second, i.e., currents sensing can be with pipe
Road separate, install, it is easy to maintenance.Additionally, with reference to the setting of pipeline so that when there is no conductive body in monitoring pipeline, sensing
Coil senses that signal is identical with bucking coil, and monitor flow through conductive body in pipeline when, induction coil and bucking coil
The signal for sensing has huge difference, so as to the stability for improving measurement sensitivity, reduce drift, improve system.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be attached to what is used needed for embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as
Restriction to scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other related accompanying drawings.
Fig. 1 shows the monitoring device axial direction schematic diagram of conductive body in a kind of pipeline that the embodiment of the present invention is provided；
Fig. 2 shows the monitoring device partial cutaway schematic of conductive body in a kind of pipeline that the embodiment of the present invention is provided.
Specific embodiment
Below in conjunction with accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground description, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Generally exist
The component of the embodiment of the present invention described and illustrated in accompanying drawing can be arranged and designed with a variety of configurations herein.Cause
This, the detailed description of the embodiments of the invention to providing in the accompanying drawings is not intended to limit claimed invention below
Scope, but it is merely representative of selected embodiment of the invention.Based on embodiments of the invention, those skilled in the art are not doing
The every other embodiment obtained on the premise of going out creative work, belongs to the scope of protection of the invention.
Referring to Fig. 1, Fig. 2, a kind of monitoring device of conductive body in pipeline is the embodiment of the invention provides, including flow through and lead
The monitoring pipeline 1 of electric object, with reference to pipeline 2, pipeline fixing device 5, be provided with the vortex of the first U-shaped mouth 37 and the second U-shaped mouth 38
Sensor 3, and the signal processor 6 electrically connected with the eddy current sensor 3, wherein, monitoring pipeline 1 passes through eddy current sensor
3 the first U-shaped mouth 37 is simultaneously fixed on eddy current sensor 3 by pipeline fixing device 4, and eddy current sensor 3 is passed through with reference to pipeline 2
The second U-shaped mouth 38 and be fixed on eddy current sensor 3 by pipeline fixing device 4.Preferably, pipeline fixing device 4 includes
, can be fixed on eddy current sensor 3 on monitoring pipeline 1 easily by detachable circular arc fixed block and attachment screw, dismount pole
It is easy.
Eddy current sensor 3 includes shell 35, skeleton 34, the coaxial primary coil 32, induction coil being wound on skeleton 34
31 and bucking coil 33, wherein, the first U-shaped mouth 37 and the second U-shaped mouth 38, the first U-shaped mouth are equipped with shell 35 and skeleton 34
37 are located between primary coil 32 and induction coil 31, and the second U-shaped mouth 38 is located between primary coil 32 and bucking coil 33.Ginseng
Pipeline 2 is examined parallel to monitoring pipeline 1, and primary coil 32 perpendicular to eddy current sensor 3, induction coil 31 and bucking coil 33
Axis.Identical, the compensating line in eddy current sensor 3 of diameter preferably, with reference to pipeline 2, wall thickness, material and monitoring pipeline 1
The spacing d2 for enclosing 33 to primary coil 32 is equal to the spacing d1 of induction coil 31 to primary coil 32, is conducive to improving the spirit for measuring
Sensitivity and stability.
Preferably, iron core 39 is provided with primary coil 32, induction coil 32, bucking coil 33, further improves vortex
The sensitivity of sensor.
Eddy current sensor 3 is connected by signal cable 5 with signal processor 6, and signal processor 6 is by induction coil 31 and mends
Repay after the signal that coil 33 senses is analyzed treatment and provide the signal that whether conductive body is flowed through in monitoring pipeline 1, work as stream
When crossing conductive body, monitoring device provides alarm signal.
The embodiment of the present invention can improve measurement sensitivity, improve the stability of monitoring device, because, eddy current sensor 3
Induction coil 31, bucking coil 33 are symmetrical with primary coil 32, are again identicals with reference to pipeline 2 and monitoring pipeline 1
Material, identical diameter, identical wall thickness.Therefore, monitor pipeline 1 in there is no conductive body when, induction coil 31 with compensation
The signal sensed in coil 33 is identical, can be completely counterbalanced by；And when flowing through conductive body in monitoring pipeline 1, induction coil 31
There is huge difference with the signal sensed in bucking coil 33, so as to can monitor to flow through conductive body in pipeline.
Further to reduce influence of the temperature change to eddy current sensor coil, the stability of measurement is improved.Preferably, whirlpool
Flow sensor 3 also includes the temperature sensor 36 electrically connected with signal processor 6, for measuring the temperature in eddy current sensor 3,
Influence of the temperature to eddy current sensor interior loop is further compensate for, the stability of measurement is further improved.The temperature sensor 36
Preferably thermocouple.
The present invention can be used for that nuclear reactor, chip cooling technique, aircraft active cooling etc. are many to be conducted heat using liquid metal
The field of cooling, described liquid metal can be Liquid Sodium, liquid potassium, liquid state Na-K alloy, liquid gallium, liquid gallium tin, liquid
The alloys such as state lead, liquid lead bismuth alloy, liquid aluminium, liquid aluminium alloy；Chemical industry, printing industry are can also be used for, to being whether there is in pipeline
The monitoring of the pipelines such as conductive body；Can be additionally used in casting industry, to transporting molten non-ferrous metal, conductive gas-solid mixing body in pipeline
Deng monitoring.
The above, specific embodiment only of the invention, but protection scope of the present invention is not limited thereto, and it is any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (7)
1. in a kind of pipeline conductive body monitoring device, it is characterised in that including flow through the conductive body monitoring pipeline,
With reference to pipeline, pipeline fixing device, be provided with the eddy current sensor of the first U-shaped mouth and the second U-shaped mouth, and with the currents sensing
The signal processor of device electrical connection, wherein, the monitoring pipeline passes through the first U-shaped mouth of the eddy current sensor and by described
Pipeline fixing device is fixed on the eddy current sensor, second U-shaped mouth of the reference pipeline through the eddy current sensor
And be fixed on the eddy current sensor by the pipeline fixing device, primary line is coaxially wound with the eddy current sensor
Circle, induction coil and bucking coil, the first U-shaped mouth are located between the primary coil and induction coil, and described second is U-shaped
Mouth is located between the primary coil and bucking coil.
2. monitoring device according to claim 1, it is characterised in that the reference pipeline parallel to the monitoring pipeline,
And the axis of the primary coil, induction coil and bucking coil perpendicular to the eddy current sensor.
3. monitoring device according to claim 2, it is characterised in that the diameter of the reference pipeline, wall thickness, material and institute
State the identical of monitoring pipeline.
4. according to any described monitoring devices of claim 1-3, it is characterised in that bucking coil is to primary in eddy current sensor
The spacing of coil is equal to the spacing of induction coil to primary coil.
5. monitoring device according to claim 4, it is characterised in that the primary coil, induction coil and bucking coil
Inside it is provided with iron core.
6. according to any described monitoring devices of claim 1-3, it is characterised in that the eddy current sensor also includes and signal
Process the temperature sensor of mechatronics.
7. monitoring device according to claim 6, it is characterised in that the temperature sensor is thermocouple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710222095.5A CN106932466A (en) | 2017-04-06 | 2017-04-06 | The monitoring device of conductive body in a kind of pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710222095.5A CN106932466A (en) | 2017-04-06 | 2017-04-06 | The monitoring device of conductive body in a kind of pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106932466A true CN106932466A (en) | 2017-07-07 |
Family
ID=59426290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710222095.5A Pending CN106932466A (en) | 2017-04-06 | 2017-04-06 | The monitoring device of conductive body in a kind of pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106932466A (en) |
-
2017
- 2017-04-06 CN CN201710222095.5A patent/CN106932466A/en active Pending
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170707 |
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| WD01 | Invention patent application deemed withdrawn after publication |