CN205562470U - Device that has or not liquid metal in monitoring pipe says - Google Patents
Device that has or not liquid metal in monitoring pipe says Download PDFInfo
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- CN205562470U CN205562470U CN201620132532.5U CN201620132532U CN205562470U CN 205562470 U CN205562470 U CN 205562470U CN 201620132532 U CN201620132532 U CN 201620132532U CN 205562470 U CN205562470 U CN 205562470U
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Abstract
The utility model belongs to liquid metal monitors the field, concretely relates to device that has or not liquid metal in monitoring pipe says, set up including perpendicular the eddy current sensor in the pipeline outside is fixed eddy current sensor's fixed bolster and with the signal processor that the eddy current sensor electricity is connected, wherein, eddy current sensor includes the shell, and the setting is in bobbin in the shell, coaxial coiling is in primary, induction coil and compensating coil on the bobbin, induction coil with the coiling of compensating coil symmetry is in primary's both sides, and apart from the pipeline by near to doing far in proper order induction coil primary with compensating coil. The utility model discloses have that the installation and maintenance is convenient, measuring sensitivity is high, stability good and easily realize beneficial effect such as mass production.
Description
Technical field
This utility model belongs to liquid metal monitoring field, in particular to a kind of device monitored in pipeline with or without liquid metal.
Background technology
Electromagnetic pump driven liquid metal heat transfer is a kind of efficient heat transfer mode, can be used for the numerous areas such as nuclear reactor, chip cooling technique, aircraft active cooling.Such as, at present, the 4th generation of technology such as nuclear energy system Liquid Sodium cools down installs electromagnetic pump on some sodium loops of fast shut-down system, however, it is necessary to ensure could allow to start electromagnetic pump in the case of the sodium channel installing electromagnetic pump is full of Liquid Sodium, otherwise will burn electromagnetic pump.Monitoring device is generally installed on electromagnetic pump exit normal sodium channel, to monitor in pipeline whether be full of Liquid Sodium.
Currently, in monitoring pipeline, the monitoring device with or without liquid metal is mainly made up of differential type mutual inductor primary transducer, secondary meter and the corresponding cable that connects, and utilizes the principle of coil mutual inductance and eddy current effect to realize being monitored with or without liquid metal in pipeline.Its shortcoming one is that the mutual inductor of primary transducer is wound on pipeline (i.e. sensor and pipeline is integrated), installs, difficult in maintenance；Two be mutual inductor be two loop constructions, background signal is big, measures that sensitivity is low and poor stability；Three is that primary transducer is difficult to mass production because there being the pipeline of multiple caliber to need monitoring.
Utility model content
The purpose of this utility model embodiment is to provide a kind of device monitored in pipeline with or without liquid metal, intend to solve existing monitoring device install and difficult in maintenance, measure that sensitivity is low, poor stability and be difficult to the technical problems such as mass production.
For this, this utility model provides a kind of device monitored in pipeline with or without liquid metal, including the eddy current sensor being vertically set on outside described pipeline, the fixed support fixing described eddy current sensor and the signal processor electrically connected with described eddy current sensor, wherein, described eddy current sensor includes shell, it is arranged on the bobbin in described shell, coaxially it is wound on the primary coil on described bobbin, induction coil and bucking coil, described induction coil and described bucking coil symmetry are wound on the both sides of described primary coil, and away from pipeline by near to being far followed successively by described induction coil, described primary coil and described bucking coil.
Further, described bucking coil to spacing d2 of described primary coil and the relation of spacing d1 of described induction coil to described primary coil is: (d1-d2)/(d1+d2)≤2.5%.
Further, the number of turn of described bucking coil is equal to the number of turn of described induction coil.
Further, described fixed support includes fixed plate and securing member.
Further, described fixed plate is c-type plate, and described securing member is anchor ear, and the two ends of described c-type plate are connected with described anchor ear, and the centre of described c-type plate is provided with the interface of fixing eddy current sensor.
As the further improvement of technique scheme, in described monitoring pipeline, the device with or without liquid metal also includes and the temperature sensor of signal processing mechatronics.
Further, described temperature sensor is fixed on described pipeline.
Further, described temperature sensor is thermocouple.
In the device that this utility model embodiment provides, use modular eddy current sensor structure, by fixed support, eddy current sensor is fixed on outside pipeline, i.e. currents sensing separates with pipeline, not only install and easy to maintenance, also adapt to the Monitoring Pinpelines of different bore, easily realize mass production；Additionally, the coil of eddy current sensor uses the three-winding structure of coaxial-symmetrical, reduce background signal, improve measurement sensitivity and stability.
For making above-mentioned purpose of the present utility model, feature and advantage to become apparent, preferred embodiment cited below particularly, and coordinate appended accompanying drawing, it is described in detail below.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of this utility model embodiment, the accompanying drawing used required in embodiment will be briefly described below, it is to be understood that, the following drawings illustrate only some embodiment of the present utility model, therefore the restriction to scope it is not construed as, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other relevant accompanying drawings according to these accompanying drawings.
A kind of device schematic diagram monitored in pipeline with or without liquid metal that Fig. 1 shows that this utility model embodiment is provided；
Fig. 2 shows the eddy current sensor structural representation that this utility model embodiment is provided.
Detailed description of the invention
Below in conjunction with accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Generally can with various different configurations arrange and design with the assembly of this utility model embodiment that illustrate described in accompanying drawing herein.Therefore, the detailed description to the embodiment of the present utility model provided in the accompanying drawings is not intended to limit claimed scope of the present utility model below, but is merely representative of selected embodiment of the present utility model.Based on embodiment of the present utility model, the every other embodiment that those skilled in the art are obtained on the premise of not making creative work, broadly fall into the scope of this utility model protection.
See Fig. 1, Fig. 2, this utility model embodiment provides a kind of device monitored in pipeline with or without liquid metal, including the eddy current sensor 3 being vertically set on outside described pipeline 1, the fixed support 4 fixing described eddy current sensor 3 and the signal processor 5 being connected by signal cable 6 with described eddy current sensor 3, wherein, eddy current sensor 3 includes shell 31, the bobbin 32 being arranged in shell 31, and the primary coil 34 being coaxially wound on bobbin 32, induction coil 35 and bucking coil 33, induction coil 35 and bucking coil 33 symmetry are wound on the both sides of primary coil 34, and away from pipeline by near to being far followed successively by induction coil 35, primary coil 34 and bucking coil 33.
Specifically, above-mentioned symmetrical winding method is preferably: spacing d2 of bucking coil 33 to primary coil 34 with the relation of spacing d1 of induction coil 35 to primary coil 34 is: (d1-d2)/(d1+d2)≤2.5%；The number of turn of bucking coil 33 is equal to the number of turn of induction coil 35.Wherein, the material relation of d2 with d1 is that the difference of d2 and d1 is the smaller the better, even if background signal trends towards minima.The symmetrical winding method of above-mentioned eddy current sensor coil reduces background signal, improves measurement sensitivity and stability.Specifically, on the one hand, spacing d2 of bucking coil 33 to primary coil 34 is equal or approximately equal to spacing d1 of induction coil 35 to primary coil 34, the number of turn of bucking coil 33 is equal to the number of turn of induction coil 35, therefore, primary coil 34 reasons for its use signal in induction coil 35 and bucking coil 33 is equal or approximately equal, and the electrical conductivity that variations in temperature affects induction coil 35 and bucking coil 33 is the most equal；On the other hand, distance due to bucking coil 33 to pipeline 1 or liquid metal is more than the distance of induction coil 35 to liquid metal, therefore, after primary coil 34 produces vortex flow in liquid metal, the signal that this vortex flow produces in bucking coil 33, the signal produced in induction coil 35 much smaller than this vortex flow.To sum up, induction coil 35 and this two paths of signals of bucking coil 33 can reduce background signal after signal processor offsets, and reach to put forward the purpose of high measurement sensitivity and stability.
Preferably, fixed support 4 includes fixed plate 41 and securing member 42.Fixed plate 41 is preferably c-type plate, and securing member 42 is preferably anchor ear.The two ends of described c-type plate are connected with anchor ear, and the centre of c-type plate is provided with the interface of fixing eddy current sensor 3, and anchor ear is fixed on pipeline 1 by connecting bolt 43.When this fixed support 4 is used for guaranteeing to install eddy current sensor 3 every time, the position of eddy current sensor 3 relative duct size 1 keeps constant, thus reduces the installation site impact on measuring signal.
For reducing the variations in temperature impact on eddy current sensor coil further, improve the stability measured.As the further improvement of technique scheme, this utility model also includes the temperature sensor 2 electrically connected with signal processor 5.In this temperature sensor 2 can be arranged on eddy current sensor 3 or outside eddy current sensor 3.This temperature sensor 2 is preferably fixed on pipeline by the present embodiment, for measuring the temperature of pipeline, is further compensate for temperature to measuring pipeline and the impact of eddy current sensor coil electrical conductivity, thus improves the stability of measurement.Further, this temperature sensor 2 is preferably thermocouple.
This utility model can be used for nuclear reactor, chip cooling technique, aircraft active cooling etc. many utilize liquid metal conduct heat cooling field, described liquid metal can be alloys such as Liquid Sodium, liquid potassium, liquid state Na-K alloy, liquid gallium, liquid gallium stannum etc.；Can also be used for chemical industry, printing industry, in pipeline with or without the monitoring of the toxic heavy metals such as liquid lead；Can be additionally used in casting industry, to the monitoring of transporting molten non-ferrous metal aluminum, copper etc. in pipeline.
The above; it is only detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited thereto; any those familiar with the art is in the technical scope that this utility model discloses; change can be readily occurred in or replace, all should contain within protection domain of the present utility model.Therefore, protection domain of the present utility model should described be as the criterion with scope of the claims.
Claims (8)
1. monitor the interior device with or without liquid metal of pipeline for one kind, it is characterized in that, including the eddy current sensor being vertically set on outside described pipeline, the fixed support fixing described eddy current sensor and the signal processor electrically connected with described eddy current sensor, wherein, described eddy current sensor includes shell, it is arranged on the bobbin in described shell, coaxially it is wound on the primary coil on described bobbin, induction coil and bucking coil, described induction coil and described bucking coil symmetry are wound on the both sides of described primary coil, and away from pipeline by near to being far followed successively by described induction coil, described primary coil and described bucking coil.
With or without the device of liquid metal in monitoring pipeline the most according to claim 1, it is characterized in that, spacing d2 of described bucking coil to described primary coil with the relation of spacing d1 of described induction coil to described primary coil is: (d1-d2)/(d1+d2)≤2.5%.
With or without the device of liquid metal in monitoring pipeline the most according to claim 1 and 2, it is characterised in that the number of turn of described bucking coil is equal to the number of turn of described induction coil.
With or without the device of liquid metal in monitoring pipeline the most according to claim 1, it is characterised in that described fixed support includes fixed plate and securing member.
With or without the device of liquid metal in monitoring pipeline the most according to claim 4, it is characterized in that, described fixed plate is c-type plate, and described securing member is anchor ear, the two ends of described c-type plate are connected with described anchor ear, and the centre of described c-type plate is provided with the interface of fixing eddy current sensor.
With or without the device of liquid metal in monitoring pipeline the most according to claim 1, it is characterised in that also include and the temperature sensor of signal processing mechatronics.
With or without the device of liquid metal in monitoring pipeline the most according to claim 6, it is characterised in that described temperature sensor is fixed on described pipeline.
8. according in the monitoring pipeline described in claim 6 or 7 with or without the device of liquid metal, it is characterised in that described temperature sensor is thermocouple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620132532.5U CN205562470U (en) | 2016-02-22 | 2016-02-22 | Device that has or not liquid metal in monitoring pipe says |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620132532.5U CN205562470U (en) | 2016-02-22 | 2016-02-22 | Device that has or not liquid metal in monitoring pipe says |
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| CN205562470U true CN205562470U (en) | 2016-09-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105717545A (en) * | 2016-02-22 | 2016-06-29 | 田志恒 | Device for monitoring whether liquid metal exists in pipeline |
-
2016
- 2016-02-22 CN CN201620132532.5U patent/CN205562470U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105717545A (en) * | 2016-02-22 | 2016-06-29 | 田志恒 | Device for monitoring whether liquid metal exists in pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190828 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. |
|
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhou Yonghui Inventor after: Yang Jianwei Inventor after: Cui Guosheng Inventor after: Zhao Baoping Inventor before: Zhou Yonghui |