CN105487126A - Mutual inductance type monitoring device for liquid metal in pipeline - Google Patents
Mutual inductance type monitoring device for liquid metal in pipeline Download PDFInfo
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- CN105487126A CN105487126A CN201610051729.0A CN201610051729A CN105487126A CN 105487126 A CN105487126 A CN 105487126A CN 201610051729 A CN201610051729 A CN 201610051729A CN 105487126 A CN105487126 A CN 105487126A
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- liquid metal
- monitoring device
- pipeline
- primary coil
- secondary coil
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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
- G01V3/104—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 using several coupled or uncoupled coils
- G01V3/105—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 using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops
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- Life Sciences & Earth Sciences (AREA)
- Electromagnetism (AREA)
- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention relates to a monitoring device for liquid metal fluid. The invention provides a mutual inductance type monitoring device for liquid metal in a pipeline to solve the problem in monitoring high-temperature liquid metal in a pipeline. The device comprises a primary coil, a secondary coil, a sine alternating current source, and a signal receiving and processing system. A wire rod of each of the primary coil and the secondary coil is of a three-layer structure, wherein the innermost layer is a nickel lead, the middle layer is a magnesium oxide insulating layer and the surface layer is a stainless steel cladding case. The primary coil is powered by the sine alternating current source. The secondary coil is connected to the signal receiving and processing system. The monitoring device is capable of monitoring liquid metal in a pipeline without directly contacting the liquid metal, can stand high temperature for a long period of time, has the advantages of high monitoring accuracy and high sensitivity, good reliability, long service life, simple structure, convenient operation or the like, and can be applied to monitoring liquid metal in pipelines in many fields.
Description
Technical field
The present invention relates to a kind of monitoring device of liquid metal fluid, particularly liquid metal monitoring device in a kind of mutual inductance type pipeline.
Background technology
As cooling medium, liquid metal has good heat conductivity and low-pressure mobility, be widely used in the such as numerous areas such as nuclear industry, space industry, applying more liquid metal has liquid sodium, potassium, aluminium, Na-K alloy, sn-bi alloy, lead bismuth alloy etc.
In liquid metal coolant pipeline, usual employing electromagnetic pump promotes the flowing of liquid metal, for avoiding electromagnetic pump no-load running and cause coil to damage under pipeline kind is without liquid metallic state, therefore need the outlet of monitoring electromagnetic pump whether to be full of liquid metal, such as can consider, at exit normal pipeline section, liquid metal monitoring device is installed.
But the actual work temperature of liquid metal often reaches hundreds of degree Celsius, conventional measurement instrument is caused to be difficult to be applicable to the monitoring of liquid metal in pipeline.In addition, the relative assembly of high temperature fluent metal monitoring in pipeline is not openly applicable to both at home and abroad yet.
For these reasons, to realize the monitoring of high temperature fluent metal in pipeline, just need to research and develop a kind of liquid metal monitoring device be applicable under worst hot case.
Summary of the invention
For solving the monitoring problem of high temperature fluent metal in pipeline, the invention provides liquid metal monitoring device in a kind of mutual inductance type pipeline.
In this mutual inductance type pipeline, liquid metal monitoring device comprises primary coil, secondary coil, sinusoidal alternating current source and Signal reception and disposal system; The wire rod of described primary coil and secondary coil is three-decker, and the innermost layer of described three-decker is nickel wire line, and middle layer is magnesium oxide insulated layer, and top layer is stainless steel cladding; Described primary coil is powered by sinusoidal alternating current source; Described secondary coil is connected with disposal system with Signal reception.
The frequency in described sinusoidal alternating current source is preferably 0.5-1.5kHz.
It is preferred that described primary coil and secondary coil outside are also provided with shell.
It is preferred in lead bushing that the extension line of described primary coil and secondary coil is arranged at.
It is preferred that the extension line of described primary coil and secondary coil is provided with connecting terminal socket.
In mutual inductance type pipeline of the present invention, liquid metal monitoring device Appropriate application coil mutual inductance principle and eddy effect, achieves the monitoring to liquid metal in pipeline.In observation process, sinusoidal alternating current produces alternating magnetic field by primary coil around it, and this alternating magnetic field makes to produce induction electromotive force in secondary coil.When having liquid metal in monitored pipeline, the alternating magnetic field that primary coil produces can make to produce inductive loop in the liquid metal in pipeline, this inductive loop can produce an alternating magnetic field contrary with the alternating magnetic field that primary coil produces, the alternating magnetic field that primary coil is produced is partially offset, thus make effective alternating magnetic field be less than the alternating magnetic field of primary coil generation, in the case, the induction electromotive force produced in secondary coil is corresponding reduction also.Finally, by Signal reception and disposal system, the induction electromotive force produced in secondary coil is processed, realize the monitoring of liquid metal in pipeline.
The nickel wire line high-temperature resistivity that primary coil of the present invention and secondary coil adopt is lower; there is good resistance to oxidation and resistance to elevated temperatures; magnesium oxide insulated layer has good insulating property and resistance to elevated temperatures, and stainless steel cladding then can provide good protection and shielding for coil.
In sum, in mutual inductance type pipeline of the present invention, liquid metal monitoring device adopts contactless design, the monitoring of liquid metal in pipeline can be completed when directly not contacting with liquid metal, effectively prevent the defect directly contacting the such as short circuit problem etc. brought and be difficult to overcome, the high temperature up to 600 DEG C can be born for a long time, there is monitoring accuracy and highly sensitive, good reliability, long service life, structure is comparatively simple, the advantage such as easy to operate, effectively can solve the protection problem of liquid metal conveying electromagnetic pump, the monitoring of liquid metal in the pipeline that can be applicable to numerous areas.
Accompanying drawing explanation
Liquid metal monitoring device schematic diagram in Fig. 1 mutual inductance type pipeline of the present invention.
The embodiment schematic diagram of Fig. 2 embodiment of the present invention 1.
Reference numeral: 1. liquid metal pipeline, 2. primary coil, 3. secondary coil, 4. sinusoidal alternating current source, 5. Signal reception and disposal system, 6. shell, 7. lead bushing, 8. connecting terminal socket.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are described further.
Embodiment 1
As shown in accompanying drawing 1,2, in the mutual inductance type pipeline of the present embodiment, liquid metal monitoring device comprises primary coil, secondary coil, sinusoidal alternating current source, Signal reception and disposal system, shell, lead bushing and connecting terminal socket.
Liquid metal monitoring device in the mutual inductance type pipeline of the present embodiment is adopted to monitor the liquid sodium in certain liquid sodium vertical pipe, its main process is as follows: first, primary coil, secondary coil are wound on liquid sodium vertical pipe, connect sinusoidal alternating current source, Signal reception and disposal system; Then, powered to primary coil by sinusoidal alternating current source, the electric signal that secondary coil produces is received by Signal reception and disposal system and processes; Finally, judge whether to open liquid sodium conveying electromagnetic pump according to the data obtained and liquid sodium temperature.
Wherein, the principle of observation process is as follows: sinusoidal alternating current produces alternating magnetic field B1 by primary coil around it, and this alternating magnetic field B1 makes to produce induction electromotive force in secondary coil.When having liquid sodium in monitored pipeline, the alternating magnetic field B1 that primary coil produces can make to produce inductive loop in the liquid sodium in pipeline, this inductive loop can produce an alternating magnetic field Be contrary with alternating magnetic field B1, the alternating magnetic field B1 that primary coil is produced is partially offset, thus make effective alternating magnetic field B be less than alternating magnetic field B1, in the case, the induction electromotive force produced in secondary coil is corresponding reduction also.Finally, by Signal reception and disposal system, the induction electromotive force produced in secondary coil is processed, realize the monitoring of liquid sodium in pipeline.
Claims (5)
1. a liquid metal monitoring device in mutual inductance type pipeline, is characterized in that: in this mutual inductance type pipeline, liquid metal monitoring device comprises primary coil, secondary coil, sinusoidal alternating current source and Signal reception and disposal system; The wire rod of described primary coil and secondary coil is three-decker, and the innermost layer of described three-decker is nickel wire line, and middle layer is magnesium oxide insulated layer, and top layer is stainless steel cladding; Described primary coil is powered by sinusoidal alternating current source; Described secondary coil is connected with disposal system with Signal reception.
2. liquid metal monitoring device in mutual inductance type pipeline as claimed in claim 1, is characterized in that: the frequency in described sinusoidal alternating current source is 0.5-1.5kHz.
3. liquid metal monitoring device in mutual inductance type pipeline as claimed in claim 1, is characterized in that: described primary coil and secondary coil outside are also provided with shell.
4. liquid metal monitoring device in mutual inductance type pipeline as claimed in claim 1, is characterized in that: the extension line of described primary coil and secondary coil is arranged in lead bushing.
5. liquid metal monitoring device in mutual inductance type pipeline as claimed in claim 1, is characterized in that: the extension line of described primary coil and secondary coil is provided with connecting terminal socket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610051729.0A CN105487126A (en) | 2016-01-26 | 2016-01-26 | Mutual inductance type monitoring device for liquid metal in pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610051729.0A CN105487126A (en) | 2016-01-26 | 2016-01-26 | Mutual inductance type monitoring device for liquid metal in pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105487126A true CN105487126A (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610051729.0A Pending CN105487126A (en) | 2016-01-26 | 2016-01-26 | Mutual inductance type monitoring device for liquid metal in pipeline |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4894619A (en) * | 1986-08-15 | 1990-01-16 | Outokumpu Oy | Impulse induced eddy current type detector using plural measuring sequences in detecting metal objects |
| CN1068189A (en) * | 1991-06-24 | 1993-01-20 | 大连理工大学 | Liquid level detecting method for electromagnetic casting |
| JPH09304352A (en) * | 1996-05-21 | 1997-11-28 | Nippon Cement Co Ltd | Metal detector |
| CN103123400A (en) * | 2011-11-20 | 2013-05-29 | 常州中科煜明科技有限公司 | High-accuracy metal detection sensor device |
| CN103166420A (en) * | 2013-02-01 | 2013-06-19 | 中国科学院合肥物质科学研究院 | Liquid metal magnetic force drive device |
| CN205333875U (en) * | 2016-01-26 | 2016-06-22 | 中国原子能科学研究院 | Liquid metal monitoring devices in exchangeable formula pipeline |
-
2016
- 2016-01-26 CN CN201610051729.0A patent/CN105487126A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4894619A (en) * | 1986-08-15 | 1990-01-16 | Outokumpu Oy | Impulse induced eddy current type detector using plural measuring sequences in detecting metal objects |
| CN1068189A (en) * | 1991-06-24 | 1993-01-20 | 大连理工大学 | Liquid level detecting method for electromagnetic casting |
| JPH09304352A (en) * | 1996-05-21 | 1997-11-28 | Nippon Cement Co Ltd | Metal detector |
| CN103123400A (en) * | 2011-11-20 | 2013-05-29 | 常州中科煜明科技有限公司 | High-accuracy metal detection sensor device |
| CN103166420A (en) * | 2013-02-01 | 2013-06-19 | 中国科学院合肥物质科学研究院 | Liquid metal magnetic force drive device |
| CN205333875U (en) * | 2016-01-26 | 2016-06-22 | 中国原子能科学研究院 | Liquid metal monitoring devices in exchangeable formula pipeline |
Non-Patent Citations (3)
| Title |
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| 张光武 等: "《物位和流量仪表——设计 制造 应用》", 31 May 2014, 机械工业出版社 * |
| 杜如彬 等: "《液位检测技术》", 30 November 1987, 原子能出版社 * |
| 陈道龙 等: "智能型钠液位计及其分度标定装置", 《中国核科技报告》 * |
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Application publication date: 20160413 |
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