CN204679145U - A kind of magnetic liquid level sensor - Google Patents
A kind of magnetic liquid level sensor Download PDFInfo
- Publication number
- CN204679145U CN204679145U CN201420587380.9U CN201420587380U CN204679145U CN 204679145 U CN204679145 U CN 204679145U CN 201420587380 U CN201420587380 U CN 201420587380U CN 204679145 U CN204679145 U CN 204679145U
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- permanent magnet
- glass tube
- transparent glass
- liquid level
- magnetic liquid
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
A kind of magnetic liquid level sensor, is applicable to level gauging.This device comprises: cylinder type hollow permanent magnet (3), first inductive coil (4-1), second inductive coil (4-2), first magnetic liquid ring (5-1), second magnetic liquid ring (5-2), the first cylindrical permanent magnet (6-1), the second cylindrical permanent magnet (6-2), iron core (7), transparent glass tube (8).First cylindrical permanent magnet (6-1), the second cylindrical permanent magnet (6-2), iron core (7) form composite cores jointly, transparent glass tube (8) lower end is connected with testing container (1), liquid level in transparent glass tube (8) and testing container (1) interior liquid level synchronously rise, such composite cores is just upwards held up, bridge diagram output voltage signal.Liquid level can be changed into corresponding electric signal and export by this kind of magnetic liquid level sensor, is convenient to the real-time monitored in commercial production and data acquisition.
Description
Technical field
The invention belongs to sensor field, be applicable to liquid level position and measure.
Background technology
In industrial processes, often to arrive the real-time measurement to bulk container internal liquid level, main employing glass pipe type liquid level meter or displacer formula liquid level meter at present, this kind of liquid level meter utilizes the principle of linker, liquid level situation can only be observed by the communicating pipe in outside, the electric signal of liquid level position can not be exported in real time, be not easy to the real-time monitored in commercial production and data acquisition.
Summary of the invention
The technical issues that need to address of the present invention: existing liquid level meter can not export liquid level electric signal in real time, are not easy to the problem of real-time monitored in commercial production and data acquisition.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of magnetic liquid level sensor, this device comprises: cylinder type hollow permanent magnet, the first inductive coil, the second inductive coil, first magnetic liquid ring, the second magnetic liquid ring, the first cylindrical permanent magnet, second cylindrical permanent magnet, iron core, transparent glass tube.
Connection between this device each several part:
By high strength enamel covered wire evenly, symmetrical, etc. the number of turn be wound into the two ends up and down of transparent glass tube, form the first inductive coil and the second inductive coil respectively; At the hollow permanent magnet of bottom holding cylindrical of transparent glass tube, the first cylindrical permanent magnet and the second cylindrical permanent magnet on the two ends of iron core are adsorbed respectively, three forms composite cores jointly, the first magnetic liquid ring and the second magnetic liquid ring on the two ends of composite cores are adsorbed respectively, the first magnetic liquid ring and the second magnetic liquid ring play the effect of lubrication and sealing; The composite cores being adsorbed with the first magnetic liquid ring and the second magnetic liquid ring is put in transparent glass tube, should ensure that the first cylindrical permanent magnet of composite cores bottom is relative with the cylinder type hollow permanent magnet Same Name of Ends of transparent glass tube bottom, composite cores is made to be suspended in transparent glass tube for providing repulsion, during original state, composite cores, under the effect of the hollow permanent magnet of lower cylindrical shape, is positioned at the centre position of the first inductive coil and the second inductive coil; The top of transparent glass tube is connected with air, and bottom is connected with bottom testing container.
During original state, because composite cores is positioned at the centre position of the first inductive coil and the second inductive coil, therefore the first inductive coil is identical with the inductance of the second inductive coil, and the voltage signal that bridge diagram exports is 0; When testing container injects after liquid, the liquid level in transparent glass tube synchronously rises along with liquid level in testing container, and along with the liquid level in transparent glass tube constantly rises, the air in transparent glass tube between composite cores and liquid level is compressed, and pressure increases, P
1> P
0such composite cores is just upwards held up, now the inductance of bottom first inductive coil reduces, the inductance of top second inductive coil increases, bridge diagram out of trim, output voltage signal, liquid level is higher, the inductance difference of the first inductive coil and the second inductive coil is larger, and the voltage signal of output is larger.
Beneficial effect of the present invention:
Liquid level can be changed into corresponding electric signal and export by this kind of magnetic liquid level sensor, is convenient to the real-time monitored in commercial production and data acquisition.
Accompanying drawing explanation
A kind of magnetic liquid level sensor of Fig. 1.
In figure: cylinder type hollow permanent magnet 3, first inductive coil 4-1, the second inductive coil 4-2, the first magnetic liquid ring 5-1, the second magnetic liquid ring 5-2, the first cylindrical permanent magnet 6-1, the second cylindrical permanent magnet 6-2, iron core 7, transparent glass tube 8.
Embodiment
Be that the invention will be further described for embodiment with accompanying drawing 1:
A kind of magnetic liquid level sensor, this device comprises: cylinder type hollow permanent magnet 3, first inductive coil 4-1, second inductive coil 4-2, the first magnetic liquid ring 5-1, the second magnetic liquid ring 5-2, first cylindrical permanent magnet 6-1, second cylindrical permanent magnet 6-2, iron core 7, transparent glass tube 8.
Connection between this device each several part:
By high strength enamel covered wire evenly, symmetrical, etc. the number of turn be wound into the two ends up and down of transparent glass tube 8, form the first inductive coil 4-1 and the second inductive coil 4-2 respectively; At the hollow permanent magnet 3 of the bottom holding cylindrical of transparent glass tube 8, the first cylindrical permanent magnet 6-1 and the second cylindrical permanent magnet 6-2 on the two ends of iron core 7 are adsorbed respectively, three forms composite cores jointly, on the two ends of composite cores are adsorbed respectively, the first magnetic liquid ring 5-1 and the second magnetic liquid ring 5-2, the first magnetic liquid ring 5-1 and the second magnetic liquid 5-2 ring play the effect of lubrication and sealing; The composite cores being adsorbed with the first magnetic liquid ring 5-1 and the second magnetic liquid ring 5-2 is put in transparent glass tube 8, should ensure that the first cylindrical permanent magnet 6-1 of composite cores bottom is relative with cylinder type hollow permanent magnet 3 Same Name of Ends of transparent glass tube 8 bottom, composite cores is made to be suspended in transparent glass tube 8 for providing repulsion, during original state, composite cores, under the effect of the hollow permanent magnet 3 of lower cylindrical shape, is positioned at the centre position of the first inductive coil 4-1 and the second inductive coil 4-2; The top of transparent glass tube 8 is connected with air, and bottom is connected with bottom testing container 1.
During original state, because composite cores is positioned at the centre position of the first inductive coil 4-1 and the second inductive coil 4-2, therefore the first inductive coil 4-2 is identical with the inductance of the second inductive coil 4-2, and the voltage signal that bridge diagram exports is 0; After testing container 1 injects liquid 2, the liquid level in transparent glass tube 8 synchronously rises along with liquid level in testing container 1, and along with the liquid level in transparent glass tube 8 constantly rises, the air in transparent glass tube 8 between composite cores and liquid level is compressed, and pressure increases, P
1> P
0such composite cores is just upwards held up, now the inductance of bottom first inductive coil 4-1 reduces, the inductance of top second inductive coil 4-2 increases, bridge diagram out of trim, output voltage signal, liquid level is higher, the inductance difference of the first inductive coil 4-1 and the second inductive coil 4-2 is larger, and the voltage signal of output is larger.
Liquid level can be changed into corresponding electric signal and export by this kind of magnetic liquid level sensor, is convenient to the real-time monitored in commercial production and data acquisition.
Claims (1)
1. a magnetic liquid level sensor, this level sensor comprises:
Cylinder type hollow permanent magnet (3), first inductive coil (4-1), second inductive coil (4-2), first magnetic liquid ring (5-1), second magnetic liquid ring (5-2), first cylindrical permanent magnet (6-1), second cylindrical permanent magnet (6-2), iron core (7), transparent glass tube (8), the first cylindrical permanent magnet (6-1), the second cylindrical permanent magnet (6-2), iron core (7) form composite cores jointly;
It is characterized in that:
By high strength enamel covered wire evenly, symmetrical, etc. the number of turn be wound into the two ends up and down of transparent glass tube (8), form the first inductive coil (4-1) and the second inductive coil (4-2) respectively, at the hollow permanent magnet of bottom holding cylindrical (3) of transparent glass tube (8), upper first cylindrical permanent magnet (6-1) and the second cylindrical permanent magnet (6-2) is adsorbed respectively at the two ends of iron core (7), three forms composite cores jointly, the first magnetic liquid ring (5-1) and the second magnetic liquid ring (5-2) on the two ends of composite cores are adsorbed respectively, the first magnetic liquid ring (5-1) and the second magnetic liquid (5-2) ring play the effect of lubrication and sealing, the composite cores being adsorbed with the first magnetic liquid ring (5-1) and the second magnetic liquid ring (5-2) is put in transparent glass tube (8), should ensure that first cylindrical permanent magnet (6-1) of composite cores bottom is relative with cylinder type hollow permanent magnet (3) Same Name of Ends of transparent glass tube (8) bottom, composite cores is made to be suspended in transparent glass tube (8) for providing repulsion, during original state, composite cores is under the effect of the hollow permanent magnet of lower cylindrical shape (3), be positioned at the centre position of the first inductive coil (4-1) and the second inductive coil (4-2), the top of transparent glass tube (8) is connected with air, bottom is connected with testing container (1) bottom, after testing container injects liquid, liquid level in transparent glass tube (8) synchronously rises along with liquid level in testing container, along with the liquid level in transparent glass tube (8) constantly rises, air between transparent glass tube (8) interior composite cores and liquid level is compressed, composite cores is mobile in transparent glass tube (8) under the differential pressure action of transparent glass tube (8) base seal air and top atmospheric pressure, liquid level is converted into electric signal to export.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420587380.9U CN204679145U (en) | 2014-10-11 | 2014-10-11 | A kind of magnetic liquid level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420587380.9U CN204679145U (en) | 2014-10-11 | 2014-10-11 | A kind of magnetic liquid level sensor |
Publications (1)
| Publication Number | Publication Date |
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| CN204679145U true CN204679145U (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420587380.9U Expired - Fee Related CN204679145U (en) | 2014-10-11 | 2014-10-11 | A kind of magnetic liquid level sensor |
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| Country | Link |
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| CN (1) | CN204679145U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547574A (en) * | 2016-02-04 | 2016-05-04 | 河北工业大学 | Magnetic liquid micro-pressure difference sensor of composite magnetic core |
| CN112325953A (en) * | 2020-10-14 | 2021-02-05 | 北京电子科技职业学院 | Micro-flow sensor with adjustable inner chamber based on magnetic liquid |
-
2014
- 2014-10-11 CN CN201420587380.9U patent/CN204679145U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547574A (en) * | 2016-02-04 | 2016-05-04 | 河北工业大学 | Magnetic liquid micro-pressure difference sensor of composite magnetic core |
| CN105547574B (en) * | 2016-02-04 | 2018-10-26 | 河北工业大学 | A kind of magnetic-liquid micro differential pressure sensor of composite cores |
| CN112325953A (en) * | 2020-10-14 | 2021-02-05 | 北京电子科技职业学院 | Micro-flow sensor with adjustable inner chamber based on magnetic liquid |
| CN112325953B (en) * | 2020-10-14 | 2023-06-02 | 北京电子科技职业学院 | Micro-flow sensor with adjustable inner cavity based on magnetic liquid |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150930 Termination date: 20201011 |
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| CF01 | Termination of patent right due to non-payment of annual fee |