CN1233746A - Method and device for test alignment of magnetic rotator of magnetic pump using external magnetism - Google Patents
Method and device for test alignment of magnetic rotator of magnetic pump using external magnetism Download PDFInfo
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- CN1233746A CN1233746A CN 98110180 CN98110180A CN1233746A CN 1233746 A CN1233746 A CN 1233746A CN 98110180 CN98110180 CN 98110180 CN 98110180 A CN98110180 A CN 98110180A CN 1233746 A CN1233746 A CN 1233746A
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Abstract
The present invention relates to a monitoring method and equipment for detecting the wear of spacing jacked due to eccentricity of the inner and outer magnetic rotors of magnetic pump. The detecting coils are distributed radially and uniformly along the external round surface of spacing jacket to obtain detecting signal, then proceed processing, comparing, judging, when the eccentricity reaches limit value, it gives out alarm signal. The present invention can effectively realize real time detection and eliminate the hidden danger of safety operation of magnetic pump. it is high in accuracy.
Description
The present invention relates to monitoring method and device that the inside and outside magnet rotor off-centre of a kind of magnetic drive pump causes the spacer wearing and tearing, belong to the input field.
Magnetic drive pump is a kind of static seal no-leakage pump, but it is in long-time running, and owing to reasons such as bearing wear can cause inside and outside magnet rotor off-centre, inside and outside magnet rotor is eccentric to be surpassed when a certain amount of, spacer will wear and tear, because of spacer is a thin-wall part, very easily scratch and gall, spacer is in case gall, dielectric leakage will take place, contaminated environment, even blast on fire cause heavy economic losses.
The object of the present invention is to provide and a kind ofly realize real-time detection, accuracy rate height, fully improve the inside and outside magnet rotor monitoring of eccentricity method and apparatus of magnetic drive pump of magnetic drive pump safety in operation.
The objective of the invention is to be achieved through the following technical solutions:
During the magnetic drive pump bearing wearing and tearing, can cause inside and outside magnet rotor off-centre, make between the inside and outside magnet rotor that magnetic field intensity changes everywhere, respond to the changing value of magnetic field intensity everywhere by detection, thereby the eccentric situation of can effective monitoring inside and outside magnet rotor is in case the spacer wearing and tearing cause damage.
Concrete grammar is: at the radially uniform magnetic test coil of spacer outer round surface, coil is obtained signal draws, magnet rotor interact to rotate inside and outside magnetic drive pump, and the magnetic test coil on uniform spacer surface is done relative motion in the magnetic field of inside and outside magnet rotor, cutting magnetic line and produce induction electromotive force; Under the normal condition, inside and outside magnet rotor does not have off-centre, is distributed in the induction electromotive force that the magnetic test coil at same radially any place, spacer surface produces and equates under the action of a magnetic field; When off-centre took place inside and outside magnet rotor, the induction electromotive force of spacer radial surface magnetic test coil generation everywhere changed, and the gap, somewhere increases, and then was somebody's turn to do the coil-induced electromotive force minimizing in place, on the contrary then increase; The coil detection signal is drawn, handle, compare, judge, when reaching limited range, send alerting signal and cut off the magnetic drive pump power supply by monitoring device.
Described spacer surface magnetic test coil is made, location mode is: turn to the single flat planar coil with enameled wire, to adapt to the small space between spacer and the magnet rotor, it is no less than two groups along the spacer radial circumference is uniform, axially discharge along spacer, be fixed on the spacer, above-mentioned spacer radial circumference can be spacer front end, rear end, middle-end and any radial circumference of spacer outer round surface, and the magnetic test coil that is no less than two groups is on same radial circumference.
Spacer of the present invention surface magnetic test coil also can adopt P.e.c. solder plate or copper cash plate, and plane parallel is made around the wiring form.
Described monitoring device comprises the signal conversion circuit that links to each other with magnetic test coil in regular turn, first differential circuit that links to each other with any two groups of signal conversion circuit output terminals, with fixed value and one group of first second differential circuit that the differential circuit output terminal links to each other, with the comparer that the upper and lower limit place value and the second differential circuit output terminal link to each other, the pilot relay coil that links to each other with comparator output terminal.
The inside and outside magnet rotor monitoring of eccentricity method and apparatus of magnetic drive pump of the present invention, can effectively realize causing the real-time detection of spacer wearing and tearing because of the magnetic drive pump bearing wearing and tearing make inside and outside magnet rotor off-centre, eliminate the major hidden danger that threatens the magnetic drive pump safe operation, the accuracy height, the promotion and application of the magnetic drive pump of can making greater efforts to promote.
Description of drawings is as follows:
Fig. 1: the magnetic drive pump structural representation,
Fig. 2: the inside and outside magnet rotor of magnetic drive pump, spacer, magnetic test coil profile figure;
Fig. 3: magnetic test coil coiling figure;
Fig. 4: monitoring device schematic diagram.
Below in conjunction with accompanying drawing.Provide most preferred embodiment of the present invention.Be used for further specifying enforcement of the present invention.
Embodiment 1, referring to figs. 1 to Fig. 4, the inside and outside magnet rotor monitoring of eccentricity method of present embodiment magnetic drive pump, by at the uniform three groups of magnetic test coils 10 of spacer 5 outer round surface front end edge radial circumferences, magnetic test coil 10 turns to the individual layer face by enameled wire and arranges coil, axially discharge along spacer, stick with glue knot on spacer.
Among Fig. 1, magnetic drive pump is made up of outer magnet rotor 4, interior magnet rotor 6, spacer 5, bearing 2 and bearing 8, axle 1 and axle 7, impeller 9 and casing 3.The about 3-5mm in gap between inside and outside magnet rotor, the about 1mm of spacer wall thickness, thereby used magnetic test coil enameled wire diameter is 0.05-0.1mm.
Fig. 4 is a monitoring device, and three groups of magnetic test coils are respectively X, Y, Z, produce v respectively
x, v
y, v
zInduced electromotive force is transformed into corresponding direct current signal Vx, Vy, Vz through signal conversion circuit respectively, and three direct current signals insert first differential circuit in twos and subtract each other, and gets V
A=K (Vx-Vy), V
B=K (Vy-Vx), V
C=K (Vy-Vx) is more respectively with V
A, V
B, V
CInsert second differential circuit, subtract each other with fixed value V respectively, get V
1=V-V
A, V
2=V-V
B, V
3=V-V
C, with V
1, V
2, V
3Insert voltage comparator respectively and compare, work as V
1, V
2, V
3In any one exceeds the upper limit value and lower limit value V that voltage comparator is set
H, V
LThe time, the comparer output low level, alarm takes place in the relay J ON Action, cuts off the electricity supply.
Embodiment 2, and the difference of present embodiment and embodiment 1 is: magnetic test coil 10 is five groups, and magnetic test coil 10 employing P.e.c. solder plates or copper cash plate, plane parallel are made around the wiring form, axially discharge along spacer in spacer 5 outer round surface rear ends.
More than inside and outside magnet rotor monitoring of eccentricity method of magnetic drive pump and the monitoring device of two embodiment, all can effectively realize real-time detection to inside and outside magnet rotor off-centre, eliminate the major hidden danger that threatens the magnetic drive pump safe operation, the accuracy height.
Claims (6)
1, the inside and outside magnet rotor monitoring of eccentricity method of magnetic drive pump, it is characterized in that by at the radially uniform magnetic test coil of spacer outer round surface (10), obtain detection signal by magnetic test coil, draw and handle, compare, judge, when reaching spacing value, send alerting signal.
2, according to magnet rotor monitoring of eccentricity method inside and outside the described magnetic drive pump of claim 1, it is characterized in that described magnetic test coil (10) is no less than two groups along spacer outer round surface radial circumference is uniform, axially discharge along spacer, be fixed on the spacer.
3, according to magnet rotor monitoring of eccentricity method inside and outside the described magnetic drive pump of claim 2, it is characterized in that described spacer outer round surface radial circumference can be spacer front end, rear end, middle-end and any radial circumference of spacer outer round surface, the magnetic test coil that is no less than two groups is on same radial circumference.
4,, it is characterized in that described magnetic test coil (10) turns to the individual layer face by enameled wire and arranges coil according to magnet rotor monitoring of eccentricity method inside and outside claim 1 or the 2 or 3 described magnetic drive pumps.
5, according to magnet rotor monitoring of eccentricity method inside and outside claim 1 or the 2 or 3 described magnetic drive pumps, it is characterized in that described magnetic test coil (10) adopts P.e.c. solder plate or copper cash plate, planar circular wiring form is made.
6, used monitoring device in the inside and outside magnet rotor monitoring of eccentricity method of magnetic drive pump is characterized in that including in regular turn the signal conversion circuit that links to each other with magnetic test coil (10), first differential circuit that links to each other with any two groups of signal conversion circuit output terminals.With fixed value and one group of first second differential circuit that the differential circuit output terminal links to each other, with the comparer that the upper and lower limit place value and the second differential circuit output terminal link to each other, the pilot relay coil that links to each other with comparator output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98110180 CN1233746A (en) | 1998-04-28 | 1998-04-28 | Method and device for test alignment of magnetic rotator of magnetic pump using external magnetism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98110180 CN1233746A (en) | 1998-04-28 | 1998-04-28 | Method and device for test alignment of magnetic rotator of magnetic pump using external magnetism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1233746A true CN1233746A (en) | 1999-11-03 |
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ID=5220253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98110180 Pending CN1233746A (en) | 1998-04-28 | 1998-04-28 | Method and device for test alignment of magnetic rotator of magnetic pump using external magnetism |
Country Status (1)
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| CN (1) | CN1233746A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100410620C (en) * | 2005-12-23 | 2008-08-13 | 江苏大学 | On-line mornitoring device for magnetic pump hearing gap |
| CN101430188B (en) * | 2008-11-04 | 2010-06-09 | 江苏大学 | On-line monitoring device and method for rotating shaft position of magnetic pump |
| CN101539395B (en) * | 2009-04-24 | 2011-07-06 | 江苏大学 | Device for online-monitoring of internal-external magnetic steel gap of a magnetic pump permanent coupler |
| CN103791811A (en) * | 2014-02-14 | 2014-05-14 | 哈尔滨工业大学 | Aero-engine rotor stacking assembly method and device based on capacitance sensing and magnetic levitation supporting |
| CN103791826A (en) * | 2014-02-14 | 2014-05-14 | 哈尔滨工业大学 | Aero-engine rotor electric drive assembly method and device based on capacitance sensing measurement |
| CN103925229A (en) * | 2014-04-16 | 2014-07-16 | 江苏大学 | Magnetic coupler monitoring abrasion to magnetic pump bearing |
| CN108759650A (en) * | 2018-04-23 | 2018-11-06 | 江苏大学镇江流体工程装备技术研究院 | A kind of magnetic drive pump bearing gap wear on-Line Monitor Device and its method |
| CN109029242A (en) * | 2018-09-29 | 2018-12-18 | 中国科学院长春光学精密机械与物理研究所 | A kind of inductosyn installation accuracy Calibration Method and device |
| CN110174043A (en) * | 2019-06-24 | 2019-08-27 | 黄圣扬 | Engineering pipeline offset detecting device based on cutting magnetic induction line principle |
| CN111102913A (en) * | 2018-10-29 | 2020-05-05 | 北京致感致联科技有限公司 | Online detection system for motor stator and rotor spacing change |
| CN111174750A (en) * | 2020-02-19 | 2020-05-19 | 黑龙江工业学院 | Pipe fitting lateral wall straightness accuracy measuring tool |
| CN114263622A (en) * | 2021-12-30 | 2022-04-01 | 浙江启尔机电技术有限公司 | Magnetic coupling online monitoring system and method and magnetic pump adopting same |
-
1998
- 1998-04-28 CN CN 98110180 patent/CN1233746A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100410620C (en) * | 2005-12-23 | 2008-08-13 | 江苏大学 | On-line mornitoring device for magnetic pump hearing gap |
| CN101430188B (en) * | 2008-11-04 | 2010-06-09 | 江苏大学 | On-line monitoring device and method for rotating shaft position of magnetic pump |
| CN101539395B (en) * | 2009-04-24 | 2011-07-06 | 江苏大学 | Device for online-monitoring of internal-external magnetic steel gap of a magnetic pump permanent coupler |
| CN103791811A (en) * | 2014-02-14 | 2014-05-14 | 哈尔滨工业大学 | Aero-engine rotor stacking assembly method and device based on capacitance sensing and magnetic levitation supporting |
| CN103791826A (en) * | 2014-02-14 | 2014-05-14 | 哈尔滨工业大学 | Aero-engine rotor electric drive assembly method and device based on capacitance sensing measurement |
| CN103791811B (en) * | 2014-02-14 | 2016-10-12 | 哈尔滨工业大学 | Aeroengine rotor based on inductance sensing with magnetic over draft support stacks assembly method and device |
| CN103925229A (en) * | 2014-04-16 | 2014-07-16 | 江苏大学 | Magnetic coupler monitoring abrasion to magnetic pump bearing |
| CN103925229B (en) * | 2014-04-16 | 2016-01-27 | 江苏大学 | A kind of magnetic coupling of monitoring magnetic drive pump bearing wearing and tearing |
| CN108759650A (en) * | 2018-04-23 | 2018-11-06 | 江苏大学镇江流体工程装备技术研究院 | A kind of magnetic drive pump bearing gap wear on-Line Monitor Device and its method |
| CN109029242A (en) * | 2018-09-29 | 2018-12-18 | 中国科学院长春光学精密机械与物理研究所 | A kind of inductosyn installation accuracy Calibration Method and device |
| CN111102913A (en) * | 2018-10-29 | 2020-05-05 | 北京致感致联科技有限公司 | Online detection system for motor stator and rotor spacing change |
| CN110174043A (en) * | 2019-06-24 | 2019-08-27 | 黄圣扬 | Engineering pipeline offset detecting device based on cutting magnetic induction line principle |
| CN110174043B (en) * | 2019-06-24 | 2020-12-11 | 陈昱见 | Engineering pipeline deviation detection device based on cutting magnetic induction line principle |
| CN111174750A (en) * | 2020-02-19 | 2020-05-19 | 黑龙江工业学院 | Pipe fitting lateral wall straightness accuracy measuring tool |
| CN111174750B (en) * | 2020-02-19 | 2021-04-13 | 黑龙江工业学院 | Pipe fitting lateral wall straightness accuracy measuring tool |
| CN114263622A (en) * | 2021-12-30 | 2022-04-01 | 浙江启尔机电技术有限公司 | Magnetic coupling online monitoring system and method and magnetic pump adopting same |
| CN114263622B (en) * | 2021-12-30 | 2024-04-30 | 浙江启尔机电技术有限公司 | Magnetic coupling on-line monitoring system and method and magnetic pump adopting magnetic coupling on-line monitoring system and method |
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