CN105737934B - A kind of sodium liquid level detection device - Google Patents
A kind of sodium liquid level detection device Download PDFInfo
- Publication number
- CN105737934B CN105737934B CN201610095707.4A CN201610095707A CN105737934B CN 105737934 B CN105737934 B CN 105737934B CN 201610095707 A CN201610095707 A CN 201610095707A CN 105737934 B CN105737934 B CN 105737934B
- Authority
- CN
- China
- Prior art keywords
- liquid level
- sodium liquid
- winding bobbin
- coil
- layer winding
- Prior art date
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/40—Investigating fluid-tightness of structures by using electric means, e.g. by observing electric discharges
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The present invention relates to level sensing fields; more particularly, to a kind of sodium liquid level detection device; including sodium liquid level sensor and the signal processor being connected electrically; the winding bobbin that the sodium liquid level sensor includes the protection sleeve pipe being placed in sodium liquid, is arranged in the protection sleeve pipe, and coaxially it is wound on the winding bobbin and covers primary coil, induction coil and the bucking coil of the full ranging of sodium liquid level sensor.The present invention has low background signal, high sensitivity and stability is good and there is no measurement blind area, highly-safe beneficial effects.
Description
Technical field
The invention belongs to level sensing fields, in particular to a kind of sodium liquid level detection device.
Background technique
Fast neutron reactor (referred to as " fast reactor ") is main force's heap-type of forth generation Advanced Nuclear Energy Systems in the world, liquid metal
Sodium becomes the coolant of fast reactor with its excellent thermal characteristics, for taking away heat from reactor core.Must accurately it know in real time
Liquid level of the Liquid Sodium in many containers (such as primary tank, surge tank, expansion drum), to guarantee the normal operation of reactor.
Currently, the sensing of two coils (primary coil, induction coil) is generally used using the principle of electromagnetic induction both at home and abroad
Device structure is used for on-line checking sodium liquid level, the disadvantage is that background signal is big, sensitivity is low, stability is poor.It has been also disclosed three lines
The sensor structure of circle is used for on-line checking sodium liquid level: excitation coil (primary coil) covers full ranging, induction coil setting exists
Ranging top and bucking coil are arranged in ranging lower part.Although the background signal of this technical solution, sensitivity and stability
Compared to the larger improvement that has of two coils, but the disadvantage is that there are measurement blind areas not to be capable of measuring the sodium liquid positioned at bucking coil section
Position, to have security risk.
Summary of the invention
The purpose of the present invention is to provide a kind of sodium liquid level detection devices, intend to solve existing two coil pickoffs background signal
Greatly, sensitivity is low, stability is poor and three-winding sensor there are the technical problems such as measurement blind area.
For this purpose, the present invention provides a kind of sodium liquid level detection device, including sodium liquid level sensor and the letter being connected electrically
Number processor, the sodium liquid level sensor includes the protection sleeve pipe being placed in sodium liquid, the coiling that is arranged in the protection sleeve pipe
Skeleton, and be coaxially wound on the winding bobbin and cover the primary coil of the full ranging of sodium liquid level sensor, sense
Answer coil and bucking coil.
Further, the spacing of the bucking coil to the primary coil is less than the induction coil to the primary line
The spacing of circle, the number of turns of bucking coil are less than the number of turns of induction coil.
Further, the winding bobbin includes the internal layer winding bobbin and outer layer winding bobbin of coaxial arrangement, wherein institute
Stating primary coil and the bucking coil, helically coiling is on the internal layer winding bobbin in parallel to each other, the induction coil spiral shell
Rotation is wound on the outer layer winding bobbin.
Further, the winding bobbin include coaxial arrangement internal layer winding bobbin, middle layer winding bobbin and outer layer around
Line skeleton, wherein the bucking coil helically coiling is on the internal layer winding bobbin, and the primary coil helically coiling is in institute
It states on the winding bobbin of middle layer, the induction coil helically coiling is on the outer layer winding bobbin.
Further, the sodium liquid level sensor further includes the temperature sensor with signal processing mechatronics.
Further, the temperature sensor is thermocouple.
Further, the sodium liquid level sensor further includes the metal probe with signal processing mechatronics, for measuring
Whether sodium liquid leaks into protection sleeve pipe.
In sodium liquid level detection device provided in an embodiment of the present invention, sodium liquid level sensor uses and covers its full ranging
The structure of primary coil, induction coil and bucking coil, has that background signal is low, high sensitivity and stability are good and be not present
The beneficial effect of measurement blind area and security risk.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as
Restriction to range for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other relevant attached drawings.
Fig. 1 shows a kind of sodium liquid level detection device schematic diagram of the invention；
Fig. 2 shows the sodium liquid level sensor structural schematic diagrams in the embodiment of the present invention one；
Fig. 3 shows the sodium liquid level sensor structural schematic diagram in the embodiment of the present invention two.
Specific embodiment
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Therefore, below
The range of claimed invention is not intended to limit to the detailed description of the embodiment of the present invention provided in the accompanying drawings, and
It is to be merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not making creation
Property labour under the premise of every other embodiment obtained, shall fall within the protection scope of the present invention.
Referring to Fig. 1, the embodiment of the invention provides a kind of sodium liquid level detection device, including sodium liquid level sensor and with its electricity
The signal processor 3 of connection, wherein sodium liquid level sensor includes the protection sleeve pipe 2 being placed in sodium liquid 1, is arranged in the protection
Winding bobbin 6 in casing 2, and be coaxially wound on the winding bobbin 6 and cover the sodium liquid level sensor and survey entirely
Primary coil 8, induction coil 9 and the bucking coil 7 of journey L.Induction coil 9 and each self-induced signal of bucking coil 7 are in signal
For reconvert at level value, this can greatly reduce influence of the temperature change to measuring signal after carrying out difference operation in processor 3,
To improve the sensitivity and stability of measurement.In addition, the winding length of primary coil 8, induction coil 9 and bucking coil 7 is equal
The full ranging L of sodium liquid level sensor is covered, it is highly-safe because measurement blind area may be not present.
In order to illustrate more clearly of technical solution of the present invention, further illustrated below by two embodiments.
Embodiment one
As shown in Fig. 2, the winding bobbin 6 of sodium liquid level sensor includes coaxial internal layer winding bobbin 602 and outer layer coiling
Helically coiling is on internal layer winding bobbin 602 in parallel to each other for skeleton 601, primary coil 901 and bucking coil 701, the line of induction
801 helically coilings are enclosed on outer layer winding bobbin 601, the spacing d1 of bucking coil 701 to primary coil 901 is less than induction coil
801 to primary coil 901 spacing d2, the number of turns of bucking coil 701 is less than the number of turns of induction coil 801.On the one hand, due to mending
The spacing d2 that coil 701 is less than induction coil 801 to primary coil 901 to the spacing d1 of primary coil 901 is repaid, thus is reduced
The reasons for its use signal in induction coil 801 of primary coil 901 can be offset just with the lesser bucking coil 701 of the number of turns
The grade reasons for its use signal in the more induction coil 801 of the number of turns of coil 901；On the other hand, due to bucking coil 701 to sodium
The distance of liquid 1 is greater than induction coil 801 to the distance of sodium liquid 1, and the eddy current that primary coil 901 generates in sodium liquid 1 is in the number of turns
The useful signal generated in less bucking coil 701 generates in the more induction coil 801 of the number of turns much smaller than the eddy current
Useful signal, thus, bucking coil 701 while offsetting primary coil reasons for its use signal in induction coil 801,
The decrease of the useful signal generated in induction coil to the eddy current in sodium liquid 1 is little, thus improve measurement sensitivity and
Stability.
Embodiment two
As shown in figure 3, the winding bobbin 6 of sodium liquid level sensor includes coaxial internal layer winding bobbin 613, middle layer coiling bone
Frame 612 and outer layer winding bobbin 611, wherein 711 helically coiling of bucking coil is on internal layer winding bobbin 613, primary coil 911
Helically coiling is in middle level on winding bobbin 612, and 811 helically coiling of induction coil is on outer layer winding bobbin 611, bucking coil
701 to primary coil 901 spacing d1 be less than spacing d2 of the induction coil 801 to primary coil 901, the circle of bucking coil 701
Number is less than the number of turns of induction coil 801.Result measured by sodium liquid level sensor also has background signal low, clever in this embodiment
Sensitivity height and the good effect of stability, measured by background signal and inductive signal principle it is similar with embodiment one, herein
No longer describe.
As a further improvement of the above technical scheme, sodium liquid level sensor of the present invention further includes and 3 electricity of signal processor
The temperature sensor 4 of connection, for measuring the temperature in sodium liquid level sensor.To be further reduced temperature change to sodium liquid level
The influence of cell winding improves the stability of measurement.Further, which is preferably thermocouple.
Equally as a further improvement of the above technical scheme, sodium liquid level sensor of the present invention further includes and signal processor
The metal probe 5 of 3 electrical connections, for measuring whether sodium liquid leaks into protection sleeve pipe, i.e., when sodium liquid 1 leaks into protection sleeve pipe 2
When interior, metal probe 5 is contacted with sodium liquid 1, closing of circuit, to export leakage alarm.
Based on the attribute of the high conductivity of sodium liquid, the present invention can also be used in the detection of other high electrical conductivity materials liquid levels.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. a kind of sodium liquid level detection device, which is characterized in that including sodium liquid level sensor and the signal processor being connected electrically,
The winding bobbin that the sodium liquid level sensor includes the protection sleeve pipe being placed in sodium liquid, is arranged in the protection sleeve pipe, and
Coaxially it is wound on the winding bobbin and covers primary coil, induction coil and the benefit of the full ranging of sodium liquid level sensor
Coil is repaid, the winding bobbin includes the internal layer winding bobbin and outer layer winding bobbin of coaxial arrangement, the primary coil and institute
Stating bucking coil, helically coiling is on the internal layer winding bobbin in parallel to each other, and the induction coil helically coiling is described outer
On layer winding bobbin.
2. sodium liquid level detection device according to claim 1, which is characterized in that the bucking coil to the primary coil
Spacing be less than the spacing of the induction coil to the primary coil, the number of turns of the bucking coil is less than the circle of induction coil
Number.
3. sodium liquid level detection device according to claim 1 or 2, which is characterized in that the winding bobbin further includes middle layer
Winding bobbin, internal layer winding bobbin, middle layer winding bobbin and the coaxial arrangement of outer layer winding bobbin, wherein the bucking coil spiral shell
Rotation is wound on the internal layer winding bobbin, and the primary coil helically coiling is on the middle layer winding bobbin, the induction
Coil helix is wound on the outer layer winding bobbin.
4. sodium liquid level detection device according to claim 1, which is characterized in that the sodium liquid level sensor further includes and believes
Number processing mechatronics temperature sensor.
5. sodium liquid level detection device according to claim 4, which is characterized in that the temperature sensor is thermocouple.
6. according to claim 1,2,4,5 any sodium liquid level detection device, which is characterized in that the sodium liquid level sensor
It further include the metal probe with signal processing mechatronics, for measuring whether sodium liquid leaks into protection sleeve pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610095707.4A CN105737934B (en) | 2016-02-22 | 2016-02-22 | A kind of sodium liquid level detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610095707.4A CN105737934B (en) | 2016-02-22 | 2016-02-22 | A kind of sodium liquid level detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105737934A CN105737934A (en) | 2016-07-06 |
| CN105737934B true CN105737934B (en) | 2019-02-15 |
Family
ID=56245532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610095707.4A Active CN105737934B (en) | 2016-02-22 | 2016-02-22 | A kind of sodium liquid level detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105737934B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106679764A (en) * | 2017-02-10 | 2017-05-17 | 衡阳镭目科技有限责任公司 | Conductive liquid level detecting device |
| CN115468624B (en) * | 2022-09-21 | 2023-09-29 | 中国电子科技集团公司第四十九研究所 | Continuous high-temperature liquid metal liquid level sensor and preparation method of sensitive core thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2012431A (en) * | 1977-08-17 | 1979-07-25 | Hayter J E | Electromagnetic Position Transducer Uses Eddy Currents Induced in Conductive Member |
| DE2210297C2 (en) * | 1972-03-03 | 1982-11-18 | Interatom Internationale Atomreaktorbau Gmbh, 5060 Bergisch Gladbach | Continuous level meter for electrically conductive liquids |
| US4567435A (en) * | 1983-03-09 | 1986-01-28 | Nippon Kokan Kabushiki Kaisha | Method and apparatus for continuously measuring distance utilizing eddy current and having temperature difference influence elimination |
| CN2335132Y (en) * | 1997-05-14 | 1999-08-25 | 姜虹 | Electromagnetic type liquid metal level measuring controller |
| 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 |
| CN104730144A (en) * | 2015-02-10 | 2015-06-24 | 中国人民解放军海军航空工程学院青岛校区 | Eddy-current transducer for detecting internal corrosion of multilayer structure and manufacture method of eddy-current transducer |
| CN105318935A (en) * | 2015-12-04 | 2016-02-10 | 中国原子能科学研究院 | Wide-range mutual-induction type liquid metal liquidometer |
| CN205561964U (en) * | 2016-02-22 | 2016-09-07 | 衡阳镭目科技有限责任公司 | Sodium liquid level detection device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06137921A (en) * | 1992-10-26 | 1994-05-20 | Nippon Steel Corp | Method for detecting molten metal level |
| JP2005028381A (en) * | 2003-07-09 | 2005-02-03 | Nippon Steel Corp | Instrument for detecting molten metal surface level in mold |
-
2016
- 2016-02-22 CN CN201610095707.4A patent/CN105737934B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2210297C2 (en) * | 1972-03-03 | 1982-11-18 | Interatom Internationale Atomreaktorbau Gmbh, 5060 Bergisch Gladbach | Continuous level meter for electrically conductive liquids |
| GB2012431A (en) * | 1977-08-17 | 1979-07-25 | Hayter J E | Electromagnetic Position Transducer Uses Eddy Currents Induced in Conductive Member |
| US4567435A (en) * | 1983-03-09 | 1986-01-28 | Nippon Kokan Kabushiki Kaisha | Method and apparatus for continuously measuring distance utilizing eddy current and having temperature difference influence elimination |
| CN2335132Y (en) * | 1997-05-14 | 1999-08-25 | 姜虹 | Electromagnetic type liquid metal level measuring controller |
| 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 |
| CN104730144A (en) * | 2015-02-10 | 2015-06-24 | 中国人民解放军海军航空工程学院青岛校区 | Eddy-current transducer for detecting internal corrosion of multilayer structure and manufacture method of eddy-current transducer |
| CN105318935A (en) * | 2015-12-04 | 2016-02-10 | 中国原子能科学研究院 | Wide-range mutual-induction type liquid metal liquidometer |
| CN205561964U (en) * | 2016-02-22 | 2016-09-07 | 衡阳镭目科技有限责任公司 | Sodium liquid level detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105737934A (en) | 2016-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102200528B (en) | On-line detection device for broken wires of wire ropes | |
| CN103487503A (en) | Rotating magnetic field eddy current detection probe | |
| CN201717082U (en) | Intelligent online monitoring oil-impregnated paper condenser type transformer bushing | |
| CN205403691U (en) | Axial displacement sensor | |
| CN105737934B (en) | A kind of sodium liquid level detection device | |
| CN205561964U (en) | Sodium liquid level detection device | |
| CN103268802A (en) | Magnetizing device and detecting method for detecting corrosion condition of underground metal pipelines | |
| CN108535329A (en) | The test device of thin layer of conductive material, the test method of sheet resistance, the test method of damage information | |
| CN103529359A (en) | Method for positioning inter-turn insulation fault of dry air-core reactor | |
| Ma et al. | Fault diagnosis method based on multi‐source information fusion for weak interturn short circuit in synchronous condensers | |
| CN106353370A (en) | Device and method for nondestructively detecting materials for windings of power distribution transformers | |
| CN113465660B (en) | Non-contact temperature measurement and material component detection device and method based on conductivity | |
| CN210803568U (en) | Alternating current sensor | |
| CN105628137B (en) | Sodium liquid level detection device | |
| Wang et al. | Analysis of influencing factors on site fault diagnosis of inter-turn short circuit fault of dry-type air-core shunt reactor | |
| CN106679764A (en) | Conductive liquid level detecting device | |
| CN108267489A (en) | The judgment method of dry change winding material based on metal material temperature-coefficient of electrical resistance | |
| CN202383224U (en) | Online monitoring apparatus for turn-to-turn short circuit of voltage transformer | |
| CN213517514U (en) | Reactor turn-to-turn insulation detection sensor and reactor turn-to-turn insulation detection device | |
| CN207832936U (en) | A kind of power distribution network cable detecting device | |
| CN202422986U (en) | Low current detection mutual inductor for suppressing power frequency electromagnetic interference | |
| US11860127B2 (en) | Eddy current probe based on Halbach array coil | |
| Ma et al. | Improved power transformer winding deformation fault diagnosis method | |
| CN109061261A (en) | A method of the anti-strong magnetic stealing with compensation measurement | |
| RU2536835C1 (en) | Inductive level gauge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190826 Address after: 102400 No. 1 Sanqiang Road, Xinzhen, Fangshan District, Beijing Patentee after: China Institute of Atomic Energy Address before: 421001 Hunan Province, Hengyang Zhengxiang District Furong Road No. 21 Patentee before: Hengyang Ramon Science & Technology Co., Ltd. |