CN110863992A - Magnetic rotor offset monitoring device in magnetic pump and magnetic pump - Google Patents
Magnetic rotor offset monitoring device in magnetic pump and magnetic pump Download PDFInfo
- Publication number
- CN110863992A CN110863992A CN201910821954.1A CN201910821954A CN110863992A CN 110863992 A CN110863992 A CN 110863992A CN 201910821954 A CN201910821954 A CN 201910821954A CN 110863992 A CN110863992 A CN 110863992A
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- Prior art keywords
- coil
- magnetic
- permanent magnet
- pump
- magnetic rotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/021—Units comprising pumps and their driving means containing a coupling
- F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
- F04D13/027—Details of the magnetic circuit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/021—Units comprising pumps and their driving means containing a coupling
- F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
- F04D13/026—Details of the bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0088—Testing machines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to an inner magnetic rotor deviation monitoring device of a magnetic pump and the magnetic pump, wherein the inner magnetic rotor deviation monitoring device of the magnetic pump is formed by a first inner permanent magnet (61a) and a second inner permanent magnet (61b) which are symmetrically and fixedly arranged on the center line on the side end of an inner magnetic rotor (6), a first coil (71a) and a second coil (71b) which are symmetrically and fixedly arranged on the center line on the outer circular surface of an isolation sleeve (7), and a transmitter (9) arranged outside the magnetic pump; the magnetic strength of the first inner permanent magnet is the same as that of the second inner permanent magnet; the coil parameters of the first coil and the second coil are the same; the first coil and the second coil are connected in series in opposite phases and are connected with a transmitter arranged outside the magnetic pump through a transmission lead, and induced electromotive force or induced current is compared and processed through the transmitter, so that the offset condition of a main shaft system of the magnetic pump is monitored in real time, and local display and remote transmission control are performed.
Description
Technical Field
The invention relates to a magnetic pump, in particular to an inner magnet rotor offset monitoring device of the magnetic pump.
Background
Magnetic drive pump is in the operation in-process, has following several kinds of circumstances to cause interior magnetic rotor and the inner wall friction damage of isolation sleeve, causes the fault to stop:
1. the sliding bearing is made of soft materials such as graphite, and after the sliding bearing runs for a certain time, the gap between the sliding bearing and the shaft sleeve is too large, if the sliding bearing is not changed in time, the rotor system is stressed unevenly when the running condition changes, and the inner magnetic rotor and the inner wall of the isolation sleeve are subjected to friction damage.
2. When the sliding bearing or the shaft sleeve is made of hard materials such as SiC and the like, the materials are also high in brittleness, the rotor system can be deviated when the materials are cracked during operation, and if the materials are not found in time, the inner magnetic rotor and the inner wall of the isolation sleeve can be damaged by friction.
3. The magnetic force distribution of the magnetic steel arranged on the inner magnetic rotor and the outer magnetic rotor is uneven, and the stress of the rotor system is uneven along with the lengthening of the operation time, so that the bearing abrasion is accelerated. If the inner magnet rotor is not in time, the inner magnet rotor and the inner wall of the isolation sleeve are damaged by friction.
4. Other uncertainty factors.
Disclosure of Invention
The invention aims to provide an inner magnetic rotor offset monitoring device of a magnetic pump and the magnetic pump using the inner magnetic rotor offset monitoring device, so that the rotor offset condition can be monitored in real time, and the inner magnetic rotor and the inner wall of an isolation sleeve are prevented from being rubbed to cause safety accidents.
The invention relates to an offset monitoring device of an inner magnetic rotor of a magnetic pump, which consists of a first inner permanent magnet and a second inner permanent magnet which are symmetrically and fixedly arranged on the center line on the side end of the inner magnetic rotor, a first coil and a second coil which are symmetrically and fixedly arranged on the center line on the outer circular surface of an isolation sleeve, and a transmitter arranged outside the magnetic pump;
the first coil 71a and the second coil 71b are flat winding coils, the outside of the coils is wrapped by insulating resin, and the coils are fixed on the outer circular surface of the isolation sleeve 7 by adopting high-temperature-resistant glue.
The first inner permanent magnet and the second inner permanent magnet are the same in volume, shape and magnetic strength; the coil parameters of the first coil and the second coil are the same; the first coil and the second coil are connected in series in opposite phases and are connected with a transmitter arranged outside the magnetic pump through a transmission lead, and the transmitter carries out local display and remote transmission.
A first inner permanent magnet and a second inner permanent magnet are symmetrically (namely 180 degrees) fixedly installed on a central line at the side end of an inner magnetic rotor, and a first coil and a second coil are symmetrically (namely 180 degrees) fixedly installed on the central line on the outer circular surface of an isolation sleeve. When the inner magnetic rotor rotates, the first inner permanent magnet and the second inner permanent magnet on the inner magnetic rotor correspond to the first coil and the second coil on the outer circular surface of the isolation sleeve in the radial direction, the first inner permanent magnet and the second inner permanent magnet on the inner magnetic rotor cut the first coil and the second coil on the outer circular surface of the isolation sleeve, the first coil and the second coil respectively generate induced electromotive force (induced current), and the first coil and the second coil are connected in series in an opposite phase mode and are connected with a transmitter arranged outside the magnetic pump through a transmission lead.
When the inner magnetic rotor does not radially deviate, namely the inner magnetic rotor and the first inner permanent magnet and the second inner permanent magnet on the inner magnetic rotor are equal to the distance between the isolation sleeve, the first inner permanent magnet and the second inner permanent magnet on the inner magnetic rotor are equal to the distance between the first coil and the second coil on the isolation sleeve, and the first coil and the second coil are equal in size and opposite in direction due to induced electromotive force (induced current) generated by cutting of magnetic lines of force of the first inner permanent magnet and the second inner permanent magnet; because the first coil and the second coil are connected in series in opposite phases, induced electromotive forces (induced currents) generated by the first coil and the second coil connected in series in opposite phases are mutually counteracted, and the output induced electromotive forces (induced currents) are zero.
When the inner magnetic rotor is radially offset, namely the inner magnetic rotor and the distance between the first inner permanent magnet and the second inner permanent magnet on the inner magnetic rotor and the isolation sleeve are radially offset towards one side, the distance between the first inner permanent magnet and the second inner permanent magnet on the inner magnetic rotor and the first coil and the second coil on the isolation sleeve is changed, namely the distance between the first inner permanent magnet and the first coil and the distance between the first inner permanent magnet and the second coil are larger or smaller; because the distance between the permanent magnet and the coil is different, the intensity of the magnetic line cutting coil of the permanent magnet is different, and the induced electromotive force (induced current) generated by the first coil and the second coil is different, the induced electromotive force (induced current) generated by the first coil and the second coil which are connected in series in opposite phases cannot be completely counteracted with each other, and the output induced electromotive force (induced current) is larger than zero; the induced electromotive force (induced current) is compared and processed (filtering and amplifying) through the transmitter, so that whether the inner magnetic rotor generates radial offset and radial offset is judged, local display and remote transmission control are carried out, the offset condition of the magnetic pump main shaft system is monitored in real time, and the inner magnetic rotor is prevented from rubbing with the inner wall of the isolation sleeve to cause safety accidents.
The invention relates to a magnetic pump with an inner magnetic rotor offset monitoring device, which comprises a pump body, a pump cover, a main shaft, a bearing device, an impeller, an inner magnetic rotor, an isolation sleeve and an outer magnetic rotor, and is characterized in that: an inner magnetic rotor offset monitoring device of the magnetic pump is arranged between the inner magnetic rotor and the isolation sleeve;
the magnetic pump inner magnetic rotor deviation monitoring device consists of a first inner permanent magnet and a second inner permanent magnet which are symmetrically and fixedly arranged on the center line on the side end of the inner magnetic rotor, a first coil and a second coil which are symmetrically and fixedly arranged on the center line on the outer circular surface of the isolation sleeve, and a transmitter arranged outside the magnetic pump;
the first inner permanent magnet and the second inner permanent magnet are the same in volume, shape and magnetic strength; the coil parameters of the first coil and the second coil are the same; the first coil and the second coil are connected in series in opposite phases and are connected with a transmitter arranged outside the magnetic pump through a transmission lead to carry out on-site display and remote transmission.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a magnetic rotor displacement monitoring device in a magnetic pump.
Fig. 2 is a sectional view a-a of fig. 1.
Fig. 3 is a schematic structural diagram of an embodiment of the magnetic pump with the internal magnetic rotor offset monitoring device according to the present invention.
Detailed Description
The invention relates to an offset monitoring device of an inner magnetic rotor in a magnetic pump, which is composed of a first inner permanent magnet 61a and a second inner permanent magnet 61b which are symmetrically and fixedly arranged on the center line on the side end of the inner magnetic rotor 6, a first coil 71a and a second coil 71b which are symmetrically and fixedly arranged on the center line on the outer circular surface of an isolation sleeve 7, and a transmitter 9 arranged outside the magnetic pump;
the first inner permanent magnet 61a and the second inner permanent magnet 61b have the same volume, shape and magnetic strength; the first coil 71a and the second coil 71b have the same coil parameters; the first coil 71a and the second coil 71b are connected in series with opposite phases and are connected with a transmitter 9 arranged outside the magnetic pump through a transmission lead, and the transmitter carries out local display and remote transmission.
The first coil 71a and the second coil 71b are rectangular flat winding coils, the outside of each coil is wrapped by insulating resin, and the coils are fixed on the outer circular surface of the isolation sleeve 7 by adopting high-temperature-resistant glue.
The invention relates to a magnetic pump with an inner magnetic rotor offset monitoring device, which comprises a pump body 1, a pump cover 2, a main shaft 3, a bearing device 4, an impeller 5, an inner magnetic rotor 6, an isolation sleeve 7 and an outer magnetic rotor 8, and is characterized in that: an inner magnetic rotor offset monitoring device of the magnetic pump is arranged between the inner magnetic rotor 6 and the isolation sleeve 7;
the magnetic rotor deviation monitoring device in the magnetic pump is composed of a first inner permanent magnet 61a and a second inner permanent magnet 61b which are symmetrically and fixedly arranged on the center line on the side end of the inner magnetic rotor 6, a first coil 71a and a second coil 71b which are symmetrically and fixedly arranged on the center line on the outer circular surface of the isolation sleeve 7, and a transmitter 9 arranged outside the magnetic pump;
the first inner permanent magnet 61a and the second inner permanent magnet 61b have the same volume, shape and magnetic strength; the first coil 71a and the second coil 71b have the same coil parameters; the first coil 71a and the second coil 71b are connected in series with opposite phases and are connected with a transmitter 9 arranged outside the magnetic pump through transmission leads for local display and remote transmission.
Claims (2)
1. The magnetic rotor deviation monitoring device in the magnetic pump is characterized by comprising a first inner permanent magnet (61a) and a second inner permanent magnet (61b) which are symmetrically and fixedly arranged on the center line on the side end of the inner magnetic rotor (6), a first coil (71a) and a second coil (71b) which are symmetrically and fixedly arranged on the center line on the outer circular surface of an isolation sleeve (7), and a transmitter (9) arranged outside the magnetic pump;
the first coil (71a) and the second coil (71b) are flat winding coils, the outside of each coil is wrapped by insulating resin, and the coils are fixed on the outer circular surface of the isolation sleeve (7) by adopting high-temperature-resistant glue;
the first inner permanent magnet (61a) and the second inner permanent magnet (61b) have the same volume, shape and magnetic strength; the coil parameters of the first coil (71a) and the second coil (71b) are the same; the first coil (71a) and the second coil (71b) are connected in series in opposite phases and are connected with a transmitter (9) arranged outside the magnetic pump through a transmission lead, and the transmitter carries out local display and remote transmission.
2. Magnetic drive pump with interior magnetic rotor skew monitoring device, including the pump body (1), pump cover (2), main shaft (3), bearing device (4), impeller (5), interior magnetic rotor (6), spacer (7), outer magnetic rotor (8), characterized by: an inner magnetic rotor offset monitoring device of the magnetic pump is arranged between the inner magnetic rotor (6) and the isolation sleeve (7);
the magnetic rotor deviation monitoring device in the magnetic pump is composed of a first inner permanent magnet (61a) and a second inner permanent magnet (61b) which are symmetrically and fixedly arranged on the center line of the side end of the inner magnetic rotor (6), a first coil (71a) and a second coil (71b) which are symmetrically and fixedly arranged on the center line of the outer circular surface of the isolation sleeve (7), and a transmitter (9) arranged outside the magnetic pump;
the first inner permanent magnet (61a) and the second inner permanent magnet (61b) have the same volume, shape and magnetic strength; the coil parameters of the first coil (71a) and the second coil (71b) are the same; the first coil (71a) and the second coil (71b) are connected in series in opposite phases and are connected with a transmitter (9) arranged outside the magnetic pump through transmission leads for local display and remote transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910821954.1A CN110863992A (en) | 2019-09-02 | 2019-09-02 | Magnetic rotor offset monitoring device in magnetic pump and magnetic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910821954.1A CN110863992A (en) | 2019-09-02 | 2019-09-02 | Magnetic rotor offset monitoring device in magnetic pump and magnetic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110863992A true CN110863992A (en) | 2020-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910821954.1A Pending CN110863992A (en) | 2019-09-02 | 2019-09-02 | Magnetic rotor offset monitoring device in magnetic pump and magnetic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110863992A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412830A (en) * | 2020-11-23 | 2021-02-26 | 安徽信成泵阀有限公司 | Magnetic rotor skew monitoring device and magnetic pump in magnetic pump |
| 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 |
-
2019
- 2019-09-02 CN CN201910821954.1A patent/CN110863992A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412830A (en) * | 2020-11-23 | 2021-02-26 | 安徽信成泵阀有限公司 | Magnetic rotor skew monitoring device and magnetic pump in magnetic pump |
| 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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