CN102094804A - Device and method for monitoring bearing wear of magnetic pump - Google Patents
Device and method for monitoring bearing wear of magnetic pump Download PDFInfo
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- CN102094804A CN102094804A CN 201110009378 CN201110009378A CN102094804A CN 102094804 A CN102094804 A CN 102094804A CN 201110009378 CN201110009378 CN 201110009378 CN 201110009378 A CN201110009378 A CN 201110009378A CN 102094804 A CN102094804 A CN 102094804A
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Abstract
The invention discloses a device and method for monitoring the bearing wear of a magnetic pump. The monitoring device disclosed by the invention comprises an isolating sleeve (4), an internal magnetic steel ring (21) and an external magnetic steel ring (5) which are distributed at the two sides of the isolating sleeve, an intelligent signal processing circuit board (3), a sampling controller and more than one bearing wear detector (1), wherein each bearing wear detector comprises two or four detecting wires (6) and corresponding lines; and the intelligent signal processing circuit board comprises more than one bearing wear detecting signal input port (15), a sampling control signal input port (16) and a signal output port (17). By utilizing the structure and method adopted by the invention, the wear of a rotor bearing in the magnetic pump can be detected, a rotor and the isolating sleeve are prevented from rubbing, the running reliability of the magnetic pump can be enhanced, the bearing wear measurement errors of the magnetic pump caused by the load of the magnetic pump can be eliminated, and the measurement accuracy be can eliminated.
Description
Technical field
The invention belongs to the displacement measurement field.Refer in particular to a kind of magnetic drive pump bearing wear monitoring apparatus and method.
Background technique
Magnetic drive pump is different from traditional canned pump, motor reel does not directly link to each other with pump shaft, motor reel drives the rotation of outer steel ring, the outer steel ring is by magnetic steel ring rotation in the couple drive of magnetic field, interior magnetic steel ring driven pump impeller rotation, a separation sleeve that holds process-liquid is arranged between the internal-external magnetic steel ring, process-liquid is sealed in the pump, thereby need not to take traditional dynamic seal (packing) just can obtain very excellent no leakage characteristics to pump shaft, thereby be widely used in carrying various severe toxicity, inflammable, dangerous medium such as explosive grade is at oil, chemical industry, medicine, nuclear power, important function has been brought into play in fields such as national defence.Because supporting the sliding bearing of pump rotor in the magnetic drive pump is to utilize institute's course of conveying fluid to be lubricated, this process-liquid often lubricity is relatively poor; Secondly in production environment, may run into also in the pump that liquid is evacuated or situation such as liquid minimizing, this moment Magnetic Drive Pump Sliding Bearing generate heat fast, bearing wear quickens; In addition, the solid that is dispersed in the working fluid can produce the potential bearing or the grinding of journal surface.The cumulative effect of these incidents can cause bearing to wear and tear too early.
The result causes pump rotor axle substantial deviation center, and rotor and separation sleeve rub, and rapidly that separation sleeve is worn out, cause dielectric leakage, the toxic substance diffusion, even cause the major disaster incidents.Though magnetic drive pump can the dangerous medium of leak free conveying, yet the safety monitoring device during not as the emergency of automobile collision preventing air bag and so on can't but be a hidden danger of this product.The difficulty of problem is that the gap between magnetic drive pump complex structure, internal-external magnetic steel ring and the separation sleeve is narrow and small, does not have the space of sensor installation.Real-time monitoring problem at magnetic drive pump bearing wearing and tearing and interior magnet steel and separation sleeve friction, utilize the internal-external magnetic steel ring of magnetic drive pump itself, with a very thin detection lead that is fixed in the separation sleeve outer surface as Magnetic Drive Pump Sliding Bearing wear monitoring sensor, the wearing and tearing of online detection magnetic drive pump inner rotor bearing, should be one simple and easy, cheaply the scheme of using value arranged.
Summary of the invention
The purpose of this invention is to provide a kind of magnetic drive pump bearing wear monitoring device, can detect the wearing and tearing of magnetic drive pump inner rotor bearing, prevent that rotor and separation sleeve from rubbing.Another object of the present invention provides a kind of magnetic drive pump bearing wear monitoring method, can eliminate the magnetic drive pump bearing wear measurement error that the magnetic drive pump load causes.
The problem that will solve required for the present invention realizes by the following technical solutions: it comprises separation sleeve, is distributed in the interior magnetic steel ring and the outer steel ring of separation sleeve both sides, it is characterized in that described monitoring device is made up of intelligent signal processing circuit board, sampling controller and the bearing wear detector more than a group; Every group of bearing wear detector detects lead by 2 or 4 and respective gut is formed, detects lead and be between magnetic drive pump separation sleeve and magnetic drive pump outer steel ring, is fixed in the insulated conductor of separation sleeve outer surface and separation sleeve parallel to an axis; When the detection lead was 2, angle was 180 degree or θ 2 at interval, and θ 2 is the ratio of 360 degree and magnetic drive pump outer steel number; When the detection lead was 4, angle was respectively θ 2, θ 3, θ 2, θ 3 at interval; θ 3 is that 180 degree deduct the poor of θ 2; All of every group of bearing wear detector detect lead and link to each other along the separation sleeve outer surface with insulated conductor, integral body has only the signaling interface of two line ends as this group bearing wear detector, and each all satisfied integral multiple for θ 2 of interval angle that detect between the lead of organizing the bearing wear detector concerns; Described intelligent signal processing circuit board contain an above bearing wear testing signal inlet opening [, a sampling control signal inlet opening, a signal output; Each signaling interface of organizing the bearing wear detector is respectively with after each bearing wear testing signal inlet opening of intelligent signal processing circuit board links to each other, be connected to the signal input part of gate-controlled switch, the sampling controller interface is with after the sampling control signal inlet opening of intelligent signal processing circuit board links to each other, link to each other with the input end of signal transformation circuit, signal transformation circuit is output as has two kinds of logic level state square signals, its output terminal divides two-way again, one the road is connected to the control end of each gate-controlled switch, the break-make of control gate-controlled switch; One the road is connected to the intelligent signal processing circuit board, the on off operating mode of gate-controlled switch delivered to be embedded in the formula SCM system, the signal output part of each gate-controlled switch is connected to the intelligent signal processing circuit board, and the testing signal of bearing wear detector more than a group is delivered to embedded single-chip computer system; Embedded single-chip computer system has an above testing signal inlet opening and a switch state signal inlet opening, can measure and Intelligent treatment each road testing signal simultaneously, and the magnetic drive pump bearing wear extent that will finally calculate is exported by signal output.
Sampling controller of the present invention is made up of 2 sampling control leads and respective gut, the sampling control lead between magnetic drive pump separation sleeve and magnetic drive pump outer steel ring, to be fixed in separation sleeve outer ring surface be the insulated conductor of θ 2 with separation sleeve parallel to an axis, interval angle; The sampling control lead links to each other along the separation sleeve outer surface with insulated conductor, and integral body has only the signaling interface of two line ends as sampling controller; The angle of being separated by between the detection lead of sampling control lead and all bearing wear detectors all satisfies the integral multiple relation for θ 2, sampling control lead and bearing wear detector detect lead be provided with separately separately, unrelated or be one, be same section insulated conductor altogether.
Sampling controller of the present invention is made up of sampled measurements device and sampling groove, the sampled measurements device is fixed on the magnetic drive pump link press span, be made up of sampled measurements device shell, Hall transducer, magnetic steel plate that non-magnet_conductible material is made, Hall transducer detection faces geometrical center, magnetic steel plate geometrical center and detection lead are in the radial direction same the magnetic drive pump separation sleeve; Three electrical pin of Hall transducer constitute the sampling controller interface, the sampling groove is positioned at magnetic drive pump outer steel iron yoke ring outer surface, the subtended angle of sampling groove is half of outer steel subtended angle, and a sampling groove edge parallel with pump shaft is positioned on the bisector of outer steel subtended angle, and sampling groove number equals magnetic drive pump outer steel number.
A kind of magnetic drive pump bearing wear monitoring method of the present invention with detecting the bearing wear testing signal shielding of lead in outer corner difference the time, detects the bearing wear testing signal of lead when inhaling in the angle mutually and does not shield.
A kind of magnetic drive pump bearing wear monitoring method of the present invention, outer corner difference is set at its maximum value, be half of outer steel subtended angle, and will detect the bearing wear testing signal shielding of lead in its scope the time, the bearing wear testing signal in the time of not in its scope does not shield.
Said structure and method that the present invention adopts, can detect the wearing and tearing of magnetic drive pump inner rotor bearing, prevent that rotor and separation sleeve from rubbing, can improve security of operation, the reliability of magnetic drive pump, also can eliminate the magnetic drive pump bearing wear measurement error that the magnetic drive pump load causes, improve accuracy of measurement.
Description of drawings
The present invention is described further below in conjunction with accompanying drawing:
Figure 1 shows that magnetic drive pump structural drawing of the present invention
Figure 2 shows that magnetic drive pump bearing wear detector of the present invention detects the lead location schematic representation
Figure 3 shows that magnetic drive pump bearing wear detector of the present invention detects the harness wiring schematic representation
Figure 4 shows that magnetic drive pump bearing wear detector of the present invention detects lead, sampling control harness wiring schematic representation
Figure 5 shows that the present invention's groove structural representation of sampling
Figure 6 shows that the present invention's groove structural representation of sampling
Figure 7 shows that the present invention's groove structural representation of sampling
Figure 8 shows that intelligent signal processing circuit board theory diagram of the present invention
Figure 9 shows that magnetic drive pump bearing wear monitoring method principle schematic of the present invention
1. 2. 3. 4. 5. 6. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34-45. 46. 47. 48. 49. 。
Embodiment
Embodiment
Among Fig. 2, magnetic drive pump outer steel number is 14, the bearing wear detector is made as 3 groups, every group of bearing wear detector detects lead and forms by 2, be respectively 34,35,38,39,42,43, every group of bearing wear detector detects the conductor spacing angle and is respectively θ 2, and θ 2 is the ratio of 360 degree and magnetic drive pump outer steel several 14.Detect lead in the group of every group of bearing wear detector and use with the axially vertical lead of separation sleeve and link to each other along the separation sleeve outer surface, integral body has only the signaling interface 13 of two line ends as this group bearing wear detector.All angles that detect between the lead are the integral multiple of θ 2.
Among Fig. 3, Fig. 4, magnetic drive pump outer steel number is 14, the bearing wear detector is made as 3 groups, every group of bearing wear detector detects lead and forms by 4, be respectively 34,35,36,37,38,39,40,41,42,43,44,45, every group of bearing wear detector detects the conductor spacing angle and is respectively θ 2, θ 3, θ 2, θ 3; θ 2 is the ratio of 360 degree and magnetic drive pump outer steel several 14, and θ 3 is that 180 degree deduct the poor of θ 2.Detect lead in the group of every group of bearing wear detector and use with the axially vertical lead of separation sleeve and link to each other along the separation sleeve outer surface, integral body has only signaling interface Ea, Eb, the Ec of two line ends as this group bearing wear detector.All angles that detect between the lead are the integral multiple of θ 2.
Among Fig. 4, sampling controller by between magnetic drive pump separation sleeve 4 and magnetic drive pump outer steel ring 5, be fixed in separation sleeve outer ring surface and form with 2 sampling control leads 34,35 of separation sleeve parallel to an axis, sampling control lead 34,35 angle at interval is θ 2, and detecting lead 34,35 with the bearing wear detector is same section insulated conductor altogether.The sampling control lead prolongs the separation sleeve outer surface with insulated conductor and links to each other, and integral body has only the signaling interface Ekz of two line ends as sampling controller.The angle of being separated by between the detection lead of all sampling control leads and all bearing wear detectors is the integral multiple of θ 2.
Among Fig. 5, Fig. 6, Fig. 7, magnetic drive pump outer steel number is 14, and sampled measurements device 2 is fixed on the magnetic drive pump link press span 20, and sampled measurements device 2 comprises sampled measurements device shell 8, Hall transducer 9, the magnetic steel plate 10 that non-magnet_conductible material is made.Hall transducer 9 detection faces geometrical centers, magnetic steel plate 10 geometrical centers and a certain detect lead 6 in the radial direction same at the magnetic drive pump separation sleeve.Sampling groove 12 is positioned at magnetic drive pump outer steel iron yoke ring 11 outer surfaces, and the subtended angle 18 of sampling groove is half of outer steel subtended angle 19, and an edge parallel with pump shaft of groove is positioned on the bisector 22 of outer steel subtended angle.The number of sampling groove 12 equals the number of magnetic drive pump outer steel.Because Hall transducer has three terminals, be respectively power supply terminal, terminal and signal terminal, so have the signaling interface of three line ends as sampling controller.
Among Fig. 8, the intelligent signal processing circuit board contains an above bearing wear testing signal inlet opening 15, sampling control signal inlet opening 16, a signal output 17.Each signaling interface 13 of organizing the bearing wear detector is connected to the signal input part 29 of gate-controlled switch 27 respectively with after each bearing wear testing signal inlet opening 15 of intelligent signal processing circuit board links to each other.Sampling controller interface 14 is with after the sampling control signal inlet opening 16 of intelligent signal processing circuit board links to each other, link to each other with the input end 32 of signal transformation circuit 28, signal transformation circuit 28 is output as has two kinds of logic level state square signals, its output terminal 33 divides two-way again, one the road is connected to the control end 31 of each gate-controlled switch 27, the break-make of control gate-controlled switch 27; One the road is connected to the intelligent signal processing circuit board, the on off operating mode of gate-controlled switch is delivered to be embedded in formula SCM system 47.The signal output part 30 of each gate-controlled switch 27 is connected to the intelligent signal processing circuit board, the testing signal of an above bearing wear detector is delivered to be embedded in formula SCM system 47.Embedded single-chip computer system 47 has an above testing signal inlet opening and a switch state signal inlet opening, can measure and Intelligent treatment each road testing signal simultaneously, and the magnetic drive pump bearing wear extent that will finally calculate is by signal output 17 outputs.
Among Fig. 9, during the magnetic drive pump rotation, because the existence of magnetic drive pump load, there is outer corner difference 48 in interior magnetic steel ring 21 with outer steel ring 5, and the gap magnetic field instability in the outer corner difference 48 causes the magnetic drive pump bearing wear measurement to produce than mistake.But the gap magnetic field of inhaling mutually in the angle 49 of inside and outside magnetic steel ring is stable, sampling controller according to claim 2 making, to detect the bearing wear testing signal shielding of lead outer corner difference 48 in the time, the bearing wear testing signal of detection lead in inhaling angle 49 mutually the time do not shield.Sampling controller according to claim 3 making, outer corner difference 48 is set at its maximum value, be half of outer steel subtended angle, and will detect the bearing wear testing signal shielding of lead in its scope the time, the bearing wear testing signal in the time of not in its scope does not shield.Because all detect all satisfied integral multiple relation for θ 2 of interval angle between the lead 6.So as long as one is detected lead not in outer corner difference, all detect leads just not in outer corner difference, thereby this method can be eliminated the magnetic drive pump bearing wear measurement error that the magnetic drive pump load causes.
Claims (5)
1. magnetic drive pump bearing wear monitoring device, comprise separation sleeve [4], be distributed in the interior magnetic steel ring [21] and the outer steel ring [5] of separation sleeve both sides, it is characterized in that described monitoring device is made up of intelligent signal processing circuit board [3], sampling controller and one group of above bearing wear detector [1]; Every group of bearing wear detector detects lead [6] by 2 or 4 and respective gut is formed, and detecting lead [6] is the insulated conductor that is positioned between magnetic drive pump separation sleeve [4] and the magnetic drive pump outer steel ring [5], is fixed in separation sleeve outer surface and separation sleeve parallel to an axis; When detection lead [6] was 2, angle was 180 degree or θ 2 at interval, and θ 2 is the ratio of 360 degree and magnetic drive pump outer steel number; When detection lead [6] was 4, angle was respectively θ 2, θ 3, θ 2, θ 3 at interval; θ 3 is that 180 degree deduct the poor of θ 2; All of every group of bearing wear detector detect lead [6] and link to each other along the separation sleeve outer surface with insulated conductor, integral body has only the signaling interface [13] of two line ends as this group bearing wear detector, and each all satisfied integral multiple for θ 2 of interval angle that detect between the lead [6] of organizing the bearing wear detector concerns; Described intelligent signal processing circuit board contains an above bearing wear testing signal inlet opening [15], a sampling control signal inlet opening [16], a signal output [17]; Each signaling interface [13] of organizing the bearing wear detector is respectively with after each bearing wear testing signal inlet opening [15] of intelligent signal processing circuit board links to each other, be connected to the signal input part [29] of gate-controlled switch [27], sampling controller interface [14] is with after the sampling control signal inlet opening [16] of intelligent signal processing circuit board links to each other, link to each other with the input end [32] of signal transformation circuit [28], signal transformation circuit [28] is output as has two kinds of logic level state square signals, its output terminal [33] divides two-way again, one the road is connected to the control end [31] of each gate-controlled switch [27], the break-make of control gate-controlled switch [27]; One the road is connected to the intelligent signal processing circuit board, the on off operating mode of gate-controlled switch delivered to be embedded in formula SCM system [47], the signal output part [30] of each gate-controlled switch [27] is connected to the intelligent signal processing circuit board, and the testing signal of bearing wear detector more than a group is delivered to embedded single-chip computer system [47]; Embedded single-chip computer system [47] has an above testing signal inlet opening and a switch state signal inlet opening, can measure and Intelligent treatment each road testing signal simultaneously, and the magnetic drive pump bearing wear extent that will finally calculate is by signal output [17] output.
2. a kind of magnetic drive pump bearing wear monitoring device according to claim 1, it is characterized in that described sampling controller is made up of 2 sampling control leads and respective gut, the sampling control lead is the insulated conductor of θ 2 for being positioned between magnetic drive pump separation sleeve [4] and the magnetic drive pump outer steel ring [5], being fixed in surface, separation sleeve outer ring with separation sleeve parallel to an axis, interval angle; The sampling control lead links to each other along the separation sleeve outer surface with insulated conductor, and integral body has only the signaling interface [14] of two line ends as sampling controller; The angle of being separated by between the detection lead of sampling control lead and all bearing wear detectors all satisfies the integral multiple relation for θ 2, sampling control lead and bearing wear detector detect lead [6] be provided with separately separately, unrelated or be one, be same section insulated conductor altogether.
3. a kind of magnetic drive pump bearing wear monitoring device according to claim 1, it is characterized in that described sampling controller by sampled measurements device [2] and the sampling groove [12] form, sampled measurements device [2] is fixed on the magnetic drive pump link press span [20], be made up of sampled measurements device shell [8], Hall transducer [9], magnetic steel plate [10] that non-magnet_conductible material is made, Hall transducer [9] detection faces geometrical center, magnetic steel plate [10] geometrical center and detection lead [6] are in the radial direction same the magnetic drive pump separation sleeve; Three electrical pin of Hall transducer constitute sampling controller interface [14], sampling groove [12] is positioned at magnetic drive pump outer steel iron yoke ring [11] outer surface, the subtended angle [18] of sampling groove is half of outer steel subtended angle [19], and a sampling groove edge parallel with pump shaft is positioned on the bisector [22] of outer steel subtended angle, and sampling groove [12] number equals magnetic drive pump outer steel number.
4. according to a kind of magnetic drive pump bearing wear monitoring method of the described product of claim 2, it is characterized in that: will detect the bearing wear testing signal shielding of lead in outer corner difference [48] time, and detect the bearing wear testing signal of lead in inhaling angle [49] mutually the time and do not shield.
5. according to a kind of magnetic drive pump bearing wear monitoring method of the described product of claim 3, it is characterized in that: outer corner difference [48] is set at its maximum value, be half of outer steel subtended angle, and will detect the bearing wear testing signal shielding of lead in its scope the time, the bearing wear testing signal in the time of not in its scope does not shield.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100093784A CN102094804B (en) | 2011-01-18 | 2011-01-18 | Device and method for monitoring bearing wear of magnetic pump |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100093784A CN102094804B (en) | 2011-01-18 | 2011-01-18 | Device and method for monitoring bearing wear of magnetic pump |
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| CN102094804A true CN102094804A (en) | 2011-06-15 |
| CN102094804B CN102094804B (en) | 2012-11-07 |
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| CN2011100093784A Expired - Fee Related CN102094804B (en) | 2011-01-18 | 2011-01-18 | Device and method for monitoring bearing wear of magnetic pump |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102297122A (en) * | 2011-08-10 | 2011-12-28 | 浙江大学 | Experimental apparatus for friction and wear characteristics of kinematic pairs of internal gearing gear pumps |
| CN104458246A (en) * | 2014-11-06 | 2015-03-25 | 江苏大学 | Liquid magnetism coherence and power transmission characteristic study testing device of magnetic drive pump |
| 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 |
| CN112848055A (en) * | 2021-01-04 | 2021-05-28 | 武汉普创数据科技有限公司 | Bearing wear measuring instrument and manufacturing process thereof |
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2011
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| CN101430188A (en) * | 2008-11-04 | 2009-05-13 | 江苏大学 | On-line monitoring device and method for rotating shaft position of magnetic pump |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297122A (en) * | 2011-08-10 | 2011-12-28 | 浙江大学 | Experimental apparatus for friction and wear characteristics of kinematic pairs of internal gearing gear pumps |
| CN102297122B (en) * | 2011-08-10 | 2013-06-26 | 浙江大学 | Experimental apparatus for friction and wear characteristics of kinematic pairs of internal gearing gear pumps |
| CN104458246A (en) * | 2014-11-06 | 2015-03-25 | 江苏大学 | Liquid magnetism coherence and power transmission characteristic study testing device of magnetic drive pump |
| CN104458246B (en) * | 2014-11-06 | 2017-04-05 | 江苏大学 | Magnetic force pump liquid magnetic is concerned with and power transmission characteristic research assay device |
| 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 |
| CN112848055A (en) * | 2021-01-04 | 2021-05-28 | 武汉普创数据科技有限公司 | Bearing wear measuring instrument and manufacturing process thereof |
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