CN103542910A - Multi-section cable type measuring electrode of admittance or capacitance level meter - Google Patents
Multi-section cable type measuring electrode of admittance or capacitance level meter Download PDFInfo
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- CN103542910A CN103542910A CN201310579240.7A CN201310579240A CN103542910A CN 103542910 A CN103542910 A CN 103542910A CN 201310579240 A CN201310579240 A CN 201310579240A CN 103542910 A CN103542910 A CN 103542910A
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Abstract
The invention relates to a multi-section cable type measuring electrode of an admittance or capacitance level meter. The multi-section cable type measuring electrode of the admittance or capacitance level meter comprises a plurality of shielded conductors, a first insulating layer arranged on the periphery of the shielded conductors, a metal shielding layer arranged on the periphery of the first insulating layer, and a second insulating layer arranged on the periphery of the metal shielding layer, wherein the metal shielding layer is of a sectioned structure, the sections of the metal shielding layer correspond to the shielded conductors in a one-to-one mode, and each section of the metal shielding layer serves as an independent measuring electrode and is electrically connected with the corresponding shielded conductor. The multi-section cable type measuring electrode of the admittance or capacitance level meter has the advantages that as a flexible structure is adopted to replace a rigid structure, the weight of a sensor is reduced; the multi-section cable type measuring electrode of the admittance or capacitance level meter is suitable for measuring the material level of liquid and slurry materials, and can be suitable for measuring the material level of solid materials after a flexible protective device is additionally arranged on the periphery of the electrode; the multi-section cable type measuring electrode is used in cooperation with an intelligent multi-channel admittance (capacitance) transducer so that the changes of physical properties of the materials can be automatically tracked, and automatic calibration can be achieved; the performance of external environment interference resistance and high measurement precision are improved.
Description
Technical field
The invention belongs to fields of measurement, be specifically related to the multistage cable formula potential electrode of a kind of admittance or electrical capacitance levelmeter.
Background technology
Adopt the radio frequency admittance technology advantages such as measurement is current common sensing measurement mode to height of materials, and existing radio frequency admittance material level meter has simple in structure, and debugging is convenient, be at home and abroad all widely used.Radio frequency admittance level-sensing device in patent US005701084A, in use procedure, require the dielectric coefficient of measurement material constant, but in actual measurement, the dielectric coefficient of material changes with physical parameters such as temperature, pressure, density conventionally, so in application process, need personnel often to regulate the parameter of metering circuit according to the state of material.
In order to solve material dielectric coefficient, change the impact on measuring accuracy, a kind of method is the sensor that adopts segmental structure, and the impact that material change in dielectric constant is brought is eliminated in comparison, the computing of the material signal of surveying by each section of potential electrode.In structure, adopt in the segmentation of steel pipe vertical direction, the mode of section insulation.This structure has following deficiency: 1, steel pipe type sensor production complex process, and Heavy Weight, is difficult for transportation and installs; While 2, measuring solid material, sensor is subject to material impact and flexural deformation, causes damaging; If 3 measure humidity or conductive materials, need there be insulation course probe outside, and insulation course is to measure lump material easy to wear and cause sensor to damage.
Summary of the invention
The present invention proposes the multistage cable formula potential electrode of a kind of admittance or electrical capacitance levelmeter, can be combined with intelligent multi-channel admittance or capacitive pick-up and form a kind of intelligent level meter, solve conventional radio frequency Conductance Style Material Level Gauge and can not realize the problem of automatic calibration when material change in dielectric constant; Solved before this steel pipe sectional type radio frequency admittance or electrical capacitance levelmeter sensor construction is heavy, difficult problem is installed in transportation; The problem that sensor flexible distortion when having solved steel pipe sectional type radio frequency admittance before this or electrical capacitance levelmeter and measuring solid material and causing damages, significantly promotes serviceable life of sensor; When having solved steel pipe sectional type radio frequency admittance before this or electrical capacitance levelmeter and measuring solid material, steel pipe directly contacts with material and the electrostatic interference brought, and the problem of material corrosion sensor; Solve sectional type radio frequency admittance material level meter before this or each segment electrode physical dimension of electrical capacitance levelmeter measuring-signal inconsistent and that cause inconsistent, unstable and then affect the problem of measuring accuracy, made up deficiency of the prior art.
Technical scheme of the present invention is achieved in that
Or a multistage cable formula potential electrode for electrical capacitance levelmeter, it is characterized in that, comprising:
Many shielded conductors;
Be located at the first insulation course of described many shielded conductor peripheries;
Be located at the metal screen layer of described the first insulation course periphery, described metal screen layer is segmental structure, each section of metal screen layer is corresponding one by one with each root shielded conductor respectively, and every section of metal screen layer, as one section of potential electrode independently, is realized and being electrically connected to its corresponding shielded conductor; The material level signal that described many shielded conductors detect for transmitting each section of potential electrode;
Be located at the second insulation course of described metal screen layer periphery.
Further, the multistage cable formula potential electrode of described admittance or electrical capacitance levelmeter also comprises insulation cable wire, and described many shielded conductors are wound around around described insulation cable wire.
Preferably, described shielded conductor is two or two above Thin cables.
Preferably, described metal screen layer is two or more.
Preferably, the intersegmental interval of described metal screen layer is not less than 5mm.
Preferably, described metal screen layer is the reticulate texture of conductive wire braiding, or is band shape, spiral fashion or the tubular structure of conducting metal paillon foil winding.
Preferably, the material of described the first insulation course and described the second insulation course is PA, PVC, UPVC, F4, F46 or elastomeric material, described the first insulation course and described the second insulation course are to be applied and formed by above-mentioned any one material, or above-mentioned any one material sleeve pipe pyrocondensation, hot melt, welding or cementing the forming of making.
Further, also comprise flexible armor, described flexible armor comprises a plurality of insulating sheaths that are set in potential electrode outside, and described insulating sheath xsect is circular or oval.
Further, described flexible armor also comprises the crude steel rope of tape insulation layer and is set in the protective metal shell outside described insulating sheath, the shape of cross section of described protective metal shell is corresponding with the shape of cross section of described insulating sheath, described insulating sheath is provided with three through holes, wherein intermediate throughholes is positioned at the center of circle or oval cross section, the through hole of both sides is symmetrical with respect to middle through hole, tangent or not tangent with middle through hole; Described potential electrode is through the intermediate throughholes of a plurality of described insulating sheaths; The crude steel rope of described tape insulation layer is through two side through hole of a plurality of described insulating sheaths.
Preferably, described crude steel rope is one, and two side through hole of described insulating sheath are passed respectively at its two ends after the doubling of middle part from bottom to top; Or described crude steel rope is two, every crude steel rope passes respectively two side through hole of described insulating sheath from bottom to top.
Beneficial effect of the present invention is:
1, can continuous coverage feed bin thing position, and can realize automatic calibration when material change in dielectric constant.
2, multistage electrode structure is consistent, and consistance and the stability of collection signal are significantly improved, and significantly improve measuring accuracy.
3, compare with rigid electrode, the convenient transportation of flexible cable formula electrode structure is installed, and significantly improves impact resistance, is particularly suitable for wide range feed bin level gauging.
4, multistage electrode and material insulation, can significantly promote that opposing dust from flying disturbs, blanking material drains off and disturb and the performance of electrostatic interference.
5, range of application is more extensive, goes for liquid or pasty material; Install additional after armor also applicable to dust-like, granular solids material, resistance to wear, erosion-resisting performance is significantly improved.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the multistage cable formula potential electrode of admittance described in the embodiment of the present invention or electrical capacitance levelmeter;
Fig. 2 is the sectional view of the multistage cable formula potential electrode of admittance described in the embodiment of the present invention or electrical capacitance levelmeter;
Fig. 3 is the structural representation of the insulation cable wire described in the embodiment of the present invention;
Fig. 4 is the structural representation of the shielded conductor described in the embodiment of the present invention;
Fig. 5 is the structural representation of the metal screen layer described in the embodiment of the present invention;
Fig. 6 is that admittance described in the embodiment of the present invention or the multistage cable formula potential electrode of electrical capacitance levelmeter install the structural representation after flexible armor additional;
Fig. 7 is that the potential electrode described in the embodiment of the present invention is combined the structural representation of a kind of intelligent level meter of forming with intelligent multi-channel admittance transmitter.
In figure:
1, shielded conductor; 2, the first insulation course; 3, metal screen layer; 4, the second insulation course; 5, insulation cable wire; 6, potential electrode; 7, insulating sheath; 8, crude steel rope; 9, protective metal shell; 10, intelligent multi-channel admittance transmitter; 11, switching cavity; 12, ring flange; 13, transition conduit; 14, sensor.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
As Figure 1-5, the admittance described in the embodiment of the present invention or the multistage cable formula potential electrode of electrical capacitance levelmeter, comprising:
Many shielded conductors 1;
Be located at the first insulation course 2 of described many shielded conductors 1 periphery;
Be located at the metal screen layer 3 of described the first insulation course 2 peripheries, described metal screen layer is segmental structure, each section of metal screen layer is corresponding one by one with each root shielded conductor respectively, and every section of metal screen layer, as one section of potential electrode independently, is realized and being electrically connected to its corresponding shielded conductor; The material level signal that described many shielded conductors detect for transmitting each section of potential electrode.
Be located at the second insulation course 4 of described metal screen layer 3 peripheries.
Further, the multistage cable formula potential electrode of described admittance or electrical capacitance levelmeter also comprises insulation cable wire 5, and described many shielded conductors 1 are wound around around described insulation cable wire 5.The effect of insulation cable wire is in order to increase the intensity of potential electrode.
In this example, described shielded conductor is six roots of sensation Thin cable.
In this example, described metal screen layer is five sections, described every section of metal screen layer measure-alike.
In this example, the intersegmental interval of described metal screen layer equals 20mm.
Wherein, metal screen layer can be the reticulate texture of conductive wire braiding, can be also band shape, spiral fashion or the tubular structure of conductive metal foil sheet winding.
Wherein, the material of the first insulation course and described the second insulation course is PA, PVC, UPVC, F4, F46 or elastomeric material, described the first insulation course and described the second insulation course are to be applied and formed by above-mentioned any one material, or above-mentioned any one material sleeve pipe pyrocondensation, hot melt, welding or cementing the forming of making.
As shown in Figure 6, potential electrode 6 outsides described in the embodiment of the present invention have installed flexible armor additional, and described flexible armor comprises a plurality of insulating sheaths 7 that are set in potential electrode 6 outsides, and described insulating sheath 7 xsects are oval.Described flexible armor also comprises the crude steel rope 8 of tape insulation layer and is set in the protective metal shell 9 outside described insulating sheath 7, the shape of cross section of described protective metal shell 9 is corresponding with the shape of cross section of described insulating sheath 7, described insulating sheath 7 is provided with three through holes, wherein intermediate throughholes is positioned at the center of oval cross section, the through hole of both sides is symmetrical with respect to middle through hole, tangent with middle through hole; Described potential electrode 6 is through the intermediate throughholes of a plurality of described insulating sheaths 7; The crude steel rope 8 of described tape insulation layer is through two side through hole of a plurality of described insulating sheaths 7.When the described potential electrode of application is assembled into level meter, described crude steel rope 8 ends are fixed in the switching cavity of level meter.Protective metal shell is mainly used in the scuff resistance of reinforced insulation sheath.Described crude steel rope is one, and two side through hole of described insulating sheath are passed respectively at its two ends after the doubling of middle part from bottom to top; Or can be also that described crude steel rope is two, every crude steel rope passes respectively two side through hole of described insulating sheath from bottom to top.Crude steel rope Main Function is that insulating sheath and protective metal shell are linked together, and forms flexible armor with protection electrode.
The effect of flexible armor is for protection electrode, avoids being subject to the friction of solid material, and the occasion that wherein friction force is less can be saved protective metal shell, while measuring liquid, can integral body save flexible armor, directly uses potential electrode.
As shown in Figure 7, potential electrode described in the embodiment of the present invention is combined a kind of intelligent level meter forming with intelligent multi-channel admittance transmitter, comprise the intelligent multi-channel admittance transmitter 10 connecting in turn from top to bottom, switching cavity 11, ring flange 12, transition conduit 13 and sensor 14, described sensor 14 and described intelligent multi-channel admittance transmitter 10 are realized mechanical connection and electrical connection described switching cavity 11 is interior, described sensor 14 comprises the potential electrode 6 described in the embodiment of the present invention, described intelligent multi-channel admittance transmitter 10 receives and processes the measuring-signal of described potential electrode 6 and exports the thing position altitude signal of feed bin.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a multistage cable formula potential electrode for admittance or electrical capacitance levelmeter, is characterized in that, comprising:
Many shielded conductors;
Be located at the first insulation course of described many shielded conductor peripheries;
Be located at the metal screen layer of described the first insulation course periphery, described metal screen layer is segmental structure, each section of metal screen layer is corresponding one by one with each root shielded conductor respectively, and every section of metal screen layer, as one section of potential electrode independently, is realized and being electrically connected to its corresponding shielded conductor;
Be located at the second insulation course of described metal screen layer periphery.
2. the multistage cable formula potential electrode of admittance according to claim 1 or electrical capacitance levelmeter, is characterized in that: also comprise insulation cable wire, described many shielded conductors are wound around around described insulation cable wire.
3. the multistage cable formula potential electrode of admittance according to claim 1 and 2 or electrical capacitance levelmeter, is characterized in that: described shielded conductor is two or two above Thin cables.
4. the multistage cable formula potential electrode of admittance according to claim 1 and 2 or electrical capacitance levelmeter, is characterized in that: described metal screen layer is two or more.
5. the multistage cable formula potential electrode of admittance according to claim 4 or electrical capacitance levelmeter, is characterized in that: the intersegmental interval of described metal screen layer is not less than 5mm.
6. the multistage cable formula potential electrode of admittance according to claim 5 or electrical capacitance levelmeter, is characterized in that: described metal screen layer is the reticulate texture of conductive wire braiding, or is band shape, spiral fashion or the tubular structure of conducting metal paillon foil winding.
7. the multistage cable formula potential electrode of admittance according to claim 1 and 2 or electrical capacitance levelmeter, it is characterized in that: the material of described the first insulation course and described the second insulation course is PA, PVC, UPVC, F4, F46 or elastomeric material, described the first insulation course and described the second insulation course are to be applied and formed by above-mentioned any one material, or above-mentioned any one material sleeve pipe pyrocondensation, hot melt, welding or cementing the forming of making.
8. according to the multistage cable formula potential electrode of the admittance described in claim 1 or 4 or electrical capacitance levelmeter, it is characterized in that: also comprise flexible armor, described flexible armor comprises a plurality of insulating sheaths that are set in potential electrode outside, and described insulating sheath xsect is circular or oval.
9. the multistage cable formula potential electrode of admittance according to claim 8 or electrical capacitance levelmeter, it is characterized in that: described flexible armor also comprises the crude steel rope of tape insulation layer and is set in the protective metal shell outside described insulating sheath, the shape of cross section of described protective metal shell is corresponding with the shape of cross section of described insulating sheath, described insulating sheath is provided with three through holes, wherein intermediate throughholes is positioned at the center of circle or oval cross section, the through hole of both sides is symmetrical with respect to middle through hole, tangent or not tangent with middle through hole; Described potential electrode is through the intermediate throughholes of a plurality of described insulating sheaths; The crude steel rope of described tape insulation layer is through two side through hole of a plurality of described insulating sheaths.
10. the multistage cable formula potential electrode of admittance according to claim 9 or electrical capacitance levelmeter, is characterized in that: described crude steel rope is one, and two side through hole of described insulating sheath are passed respectively at its two ends after the doubling of middle part from bottom to top; Or described crude steel rope is two, every crude steel rope passes respectively two side through hole of described insulating sheath from bottom to top.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310579240.7A CN103542910A (en) | 2013-11-18 | 2013-11-18 | Multi-section cable type measuring electrode of admittance or capacitance level meter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310579240.7A CN103542910A (en) | 2013-11-18 | 2013-11-18 | Multi-section cable type measuring electrode of admittance or capacitance level meter |
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| CN103542910A true CN103542910A (en) | 2014-01-29 |
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| CN201310579240.7A Pending CN103542910A (en) | 2013-11-18 | 2013-11-18 | Multi-section cable type measuring electrode of admittance or capacitance level meter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107290025A (en) * | 2016-03-31 | 2017-10-24 | 中核新能核工业工程有限责任公司 | A kind of anti-deep-etching sensor of high temperature resistance applied to radio frequency admittance level-sensing device |
| CN109920601A (en) * | 2019-03-22 | 2019-06-21 | 广西电网有限责任公司桂林供电局 | A kind of power cable suitable for Partial Discharge Detection positioning |
| CN113137996A (en) * | 2021-05-13 | 2021-07-20 | 济南大学 | Sectional capacitance sensor and multiphase layered liquid level interface measurement system |
| CN117434116A (en) * | 2023-12-01 | 2024-01-23 | 中国核电工程有限公司 | Interface dirt continuous measurement system and measurement method |
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|---|---|---|---|---|
| US5701084A (en) * | 1995-09-22 | 1997-12-23 | Magnetrol International, Inc. | Insulated capacitance probe |
| CN202869594U (en) * | 2012-10-24 | 2013-04-10 | 朱更君 | Flexible multi-section admittance level meter without metrical dead zones |
| CN103090929A (en) * | 2013-01-21 | 2013-05-08 | 北京乾达源科技有限公司 | Measurement method of liquid level and position of tank body |
| CN203551038U (en) * | 2013-11-18 | 2014-04-16 | 于浩业 | Multi-segment cable type measuring electrode of admittance or capacitance level meter |
-
2013
- 2013-11-18 CN CN201310579240.7A patent/CN103542910A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5701084A (en) * | 1995-09-22 | 1997-12-23 | Magnetrol International, Inc. | Insulated capacitance probe |
| CN202869594U (en) * | 2012-10-24 | 2013-04-10 | 朱更君 | Flexible multi-section admittance level meter without metrical dead zones |
| CN103090929A (en) * | 2013-01-21 | 2013-05-08 | 北京乾达源科技有限公司 | Measurement method of liquid level and position of tank body |
| CN203551038U (en) * | 2013-11-18 | 2014-04-16 | 于浩业 | Multi-segment cable type measuring electrode of admittance or capacitance level meter |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107290025A (en) * | 2016-03-31 | 2017-10-24 | 中核新能核工业工程有限责任公司 | A kind of anti-deep-etching sensor of high temperature resistance applied to radio frequency admittance level-sensing device |
| CN107290025B (en) * | 2016-03-31 | 2019-12-20 | 中核新能核工业工程有限责任公司 | High-temperature-resistant and strong-corrosion-resistant sensor applied to radio frequency admittance level meter |
| CN109920601A (en) * | 2019-03-22 | 2019-06-21 | 广西电网有限责任公司桂林供电局 | A kind of power cable suitable for Partial Discharge Detection positioning |
| CN113137996A (en) * | 2021-05-13 | 2021-07-20 | 济南大学 | Sectional capacitance sensor and multiphase layered liquid level interface measurement system |
| CN113137996B (en) * | 2021-05-13 | 2023-02-21 | 济南大学 | Sectional capacitance sensor and multiphase layered liquid level interface measurement system |
| CN117434116A (en) * | 2023-12-01 | 2024-01-23 | 中国核电工程有限公司 | Interface dirt continuous measurement system and measurement method |
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Application publication date: 20140129 |