CN211930466U - Magnetic gear structure for realizing isolation of rotary transformer - Google Patents
Magnetic gear structure for realizing isolation of rotary transformer Download PDFInfo
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- CN211930466U CN211930466U CN201921896006.6U CN201921896006U CN211930466U CN 211930466 U CN211930466 U CN 211930466U CN 201921896006 U CN201921896006 U CN 201921896006U CN 211930466 U CN211930466 U CN 211930466U
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- rotary transformer
- rotor
- gear
- driving gear
- driven gear
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Abstract
The utility model relates to a magnetic gear structure for realizing rotary transformer isolation, which is characterized by comprising a driving gear (1), a driven gear (2), a rotary transformer rotor (3) and a rotary transformer stator (4), wherein the driving gear (1) is fixed on a motor rotor and rotates along with the motor rotor; the driven gear (2) is arranged on a bracket of the rotary transformer rotor (3), adopts an inner meshing structure with the driving gear (1), and is provided with a stator sheath; the rotary transformer rotor (3) and the driven gear (2) are both fixed on a support of the rotary transformer rotor (3), and the rotary transformer rotor (3) and the motor rotor keep synchronous operation through the driving gear (1) and the driven gear (2); the rotary transformer stator (4) is arranged in a mounting seat of the electronic rear end cover in an interference manner. This patent compact structure, occupation space is little, and the reliability is high.
Description
Technical Field
The invention belongs to the field of energy power, and relates to a magnetic gear structure for realizing rotary transformer isolation.
Background
The traditional rotary transformer annunciator for detecting the rotating speed of the pump is a winding and is arranged on a pump shaft, when the pump shaft rotates at a high speed, the rotating speed of the pump shaft is measured and calculated through the change of induced voltage between the rotary transformer winding and a ring transformer winding, the rotary transformer annunciator is arranged in a motor, cannot be contacted with corrosive and conductive media, and needs to be isolated and protected from a working medium, and the development of a structure of a liquid cooling type centrifugal pump motor for entering cooling liquid is greatly restricted by the problem.
Disclosure of Invention
The purpose of the invention is: through this structural design will become soon and transfer to the outside by motor stator rotor intracavity portion, avoid becoming soon and the contact of 65 # cooling liquid, solve the sealed difficult problem of becoming the winding soon to the cooling liquid.
The technical scheme of the invention is as follows: the magnetic gear structure realizes the rotary transformer isolation, the magnetic gear is divided into a driving gear and a driven gear, the two gears are both permanent magnet structures, and the synchronous operation of the driving gear and the driven gear is realized through the mutual attraction between the magnetic steels with different polarities. The driving gear is fixed on the motor rotor and rotates along with the motor rotor, the rotary transformer rotor is fixed with the driven gear and keeps synchronous operation with the motor rotor through the magnetic gear, and the rotary transformer stator is fixed at the rear end of the end cover. When the motor rotates, the motor rotor drives the driving gear to rotate, and the driving gear drives the driven gear to rotate, so that the rotary transformer rotor and the motor rotor are driven to synchronously operate. Therefore, the function of synchronous operation along with the motor rotor is realized under the condition that the rotary transformer rotor is isolated from the motor rotor.
The specific scheme is as follows: a magnetic gear structure for realizing rotary transformer isolation comprises a driving gear, a driven gear, a rotary transformer rotor and a rotary transformer stator, wherein the driving gear is fixed on a motor rotor and rotates along with the motor rotor; the driven gear is arranged on the rotary-change rotor bracket and adopts an inner meshing structure with the driving gear, and a stator sheath is arranged between the driven gear and the driving gear; the rotary transformer rotor and the driven gear are both fixed on a rotary transformer rotor bracket, and the rotary transformer rotor and the motor rotor keep synchronous operation through the driving gear and the driven gear; the rotary transformer stator is arranged in a mounting seat of the electronic rear end cover in an interference manner.
When the motor rotates, the motor rotor drives the driving gear to rotate, and the driving gear drives the driven gear to rotate, so that the rotary transformer rotor and the motor rotor are driven to synchronously operate. The driving gear and the driven gear are both in a permanent magnet structure, and the driving gear and the driven gear synchronously run through mutual attraction between magnetic steels with different polarities. The rotary transformer stator is arranged in a mounting seat of the electronic rear end cover in an interference manner. The spinning rotor is a coil. The rotary transformer stator is a coil.
The invention has the advantages that:
the structure is compact, the occupied space is small, and the reliability is high. Utilize the inter attraction between the different polarity magnet steels, through selecting suitable hysteresis contained angle for driven gear produces suitable moment of torsion, drives the synchronous operation of rotary transformer rotor, will become soon and transfer to the outside by motor stator rotor intracavity portion, avoids the contact of rotary transformer and number 65 coolant liquid, solves the sealed difficult problem of rotary transformer winding to the coolant liquid.
Drawings
FIG. 1 is a schematic structural view of the present invention
Detailed Description
As shown in figure 1, the magnetic gear structure for realizing the rotary transformer isolation is characterized in that the magnetic gear is divided into a driving gear 1 and a driven gear 2, the two gears are both in a permanent magnet structure, and synchronous operation of the driving gear 1 and the driven gear 2 is realized through mutual attraction between magnetic steels with different polarities. The driving gear 1 is fixed on the motor rotor and rotates along with the motor rotor, the rotary transformer rotor 3 and the driven gear 2 are fixed together and keep synchronous operation with the motor rotor through the magnetic gear, and the rotary transformer stator 4 is fixed at the rear end of the end cover. When the motor rotates, the motor rotor drives the driving gear 1 to rotate, and the driving gear 1 drives the driven gear 2 to rotate, so that the rotary transformer 3 and the motor rotor are driven to synchronously operate. Therefore, the function of synchronous operation along with the motor rotor under the condition that the rotary transformer rotor 3 is isolated from the motor rotor is realized.
Claims (4)
1. A magnetic gear structure for realizing rotary transformer isolation is characterized by comprising a driving gear (1), a driven gear (2), a rotary transformer rotor (3) and a rotary transformer stator (4), wherein the driving gear (1) is fixed on a motor rotor and rotates along with the motor rotor; the driven gear (2) is arranged on a bracket of the rotary transformer rotor (3), adopts an inner meshing structure with the driving gear (1), and is provided with a stator sheath; the rotary transformer rotor (3) and the driven gear (2) are both fixed on a support of the rotary transformer rotor (3), and the rotary transformer rotor (3) and the motor rotor keep synchronous operation through the driving gear (1) and the driven gear (2); the rotary transformer stator (4) is arranged in a mounting seat of the electronic rear end cover in an interference manner.
2. The magnetic gear structure for realizing the rotary transformer isolation as recited in claim 1, wherein the driving gear (1) and the driven gear (2) are both permanent magnet structures, and the driving gear (1) and the driven gear (2) are synchronously operated by mutual attraction between magnetic steels with different polarities.
3. A magnetic gear structure for realizing a rotating transformer isolation as claimed in claim 1, characterized in that the rotating transformer rotor (3) is a coil.
4. A magnetic gear structure for realizing resolver isolation according to claim 1, wherein the resolver stator (4) is a coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921896006.6U CN211930466U (en) | 2019-11-05 | 2019-11-05 | Magnetic gear structure for realizing isolation of rotary transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921896006.6U CN211930466U (en) | 2019-11-05 | 2019-11-05 | Magnetic gear structure for realizing isolation of rotary transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211930466U true CN211930466U (en) | 2020-11-13 |
Family
ID=73318644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921896006.6U Active CN211930466U (en) | 2019-11-05 | 2019-11-05 | Magnetic gear structure for realizing isolation of rotary transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211930466U (en) |
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2019
- 2019-11-05 CN CN201921896006.6U patent/CN211930466U/en active Active
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