CN216117738U - Probe electrode device for measuring voltage distribution of stator winding of variable frequency motor - Google Patents
Probe electrode device for measuring voltage distribution of stator winding of variable frequency motor Download PDFInfo
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- CN216117738U CN216117738U CN202122611971.8U CN202122611971U CN216117738U CN 216117738 U CN216117738 U CN 216117738U CN 202122611971 U CN202122611971 U CN 202122611971U CN 216117738 U CN216117738 U CN 216117738U
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Abstract
The utility model provides a probe electrode device for measuring voltage distribution of a stator winding of a variable frequency motor, which comprises a base, a first support arm, a second support arm and an electrode, wherein the first support arm is connected with the base; one end of the second support arm is connected with the base through a damping rotating shaft, the other end of the second support arm is connected with the first support arm through the damping rotating shaft, the electrode is arranged in the first support arm, the measuring end and the connecting end of the electrode both extend to the outside of the first support arm, and the measuring end of the electrode is used for abutting against the exposed turn conductor of the stator coil; the position of the electrode is adjusted through the second support arm and the first support arm, the contact pressure and the contact area of the electrode and the exposed turn conductor of the stator coil are increased through the finger-like reed structure of the electrode measuring end, so that the stable electrical connection of the electrode and any exposed turn conductor of any stator coil is realized, and meanwhile, the base can be placed and fixed at any position of the motor shell through magnetic adsorption, so that the probe electrode device is convenient to detach and install, and the test efficiency is improved.
Description
Technical Field
The utility model belongs to the field of motor insulation test, and relates to a probe electrode device for measuring voltage distribution of a stator winding of a variable frequency motor.
Background
Insulation fault cases caused by the fact that the variable frequency motor bears special voltage conditions are reported too early, and the weak point of a motor insulation system can be found out through actually measuring transient voltage between coils and adjacent turns of a stator winding of the variable frequency motor through tests, so that the subsequent optimization design of motor insulation is guided.
However, the motor models are different, the testing conditions are harsh, and no relevant applicable device is available on the market. In addition, the number of turns of the stator coil of the variable frequency motor with the formed winding is large, the sectional area of the turn conductor is small, voltage distribution data of the stator winding of the variable frequency motor must be acquired by testing under the normal power-on running condition of the motor stator, the traditional high-voltage probe is large in size, and cannot be directly and effectively fixed so as to ensure that the probe electrode and the exposed turn conductor of the stator coil are in a stable and good electrical contact state, and the requirement of safety testing is difficult to meet.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a probe electrode device for measuring voltage distribution of a stator winding of a variable frequency motor, so as to meet the requirement of measuring voltage distribution characteristics between coils and between turns of the stator winding of the variable frequency motor.
The utility model is realized by the following technical scheme:
a probe electrode device for measuring voltage distribution of a stator winding of a variable frequency motor is characterized by comprising a base, a first support arm, a second support arm and an electrode;
one end of the second support arm is connected with the base through the damping rotating shaft, the other end of the second support arm is connected with the first support arm through the damping rotating shaft, the electrode is arranged in the first support arm, the measuring end and the connecting end of the electrode both extend to the outside of the first support arm, and the measuring end of the electrode is used for abutting against a test object.
Preferably, the first support arm comprises a bottom plate, a cover plate and a binding post, the bottom plate and the cover plate are fixedly connected through an insulating bolt, one end of the bottom plate is connected with the damping rotating shaft, the electrode is fixed between the bottom plate and the cover plate, meanwhile, the measuring end of the electrode extends to the outside of the other end of the bottom plate, one end of the binding post penetrates through the cover plate to be connected with the other end of the electrode, and the other end of the binding post is used for being connected with a testing device.
Preferably, the binding post is a metal bolt, and the bolt penetrates through the cover plate to be connected and fixed with the end part of the electrode in a matched mode through a nut.
Preferably, the electrode is sleeved with an insulating layer, and two ends of the electrode are located outside the insulating layer.
Preferably, the insulating layer is an electrode sleeve, the electrode is arranged in the electrode sleeve, and the electrode sleeve is clamped in the first support arm.
Preferably, the base is a magnetic base.
Preferably, the top surface of base is provided with the support arm, and the second support arm passes through the support arm and is connected with the base.
Preferably, the measuring end of the electrode is a finger-like reed, and the tail end of the electrode is in a circular ring structure.
Compared with the prior art, the utility model has the following beneficial technical effects:
the probe electrode device provided by the utility model is characterized in that the base, the second support arm and the first support arm are sequentially connected through the damping rotating shaft, the electrode is arranged on the first support arm, and the damping rotating shaft is adopted for connection, so that the first support arm and the second support arm can rotate and stop at any position within a space rotatable angle, the position of the electrode is adjusted and fixed, the position of the electrode is adjusted through the second support arm and the first support arm, the contact pressure and the area are increased through a finger-like reed structure at the electrode measuring end, the electrode is stably and electrically connected with any turn conductor of any stator coil, and the base can be placed and fixed at any position of a motor shell through magnetic adsorption, so that the probe electrode device is convenient to detach and mount, and the testing efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of an external structure of a probe electrode device according to the present invention;
FIG. 2 is a schematic view of the internal structure of the probe electrode assembly of the present invention;
FIG. 3 is a schematic diagram of the structure of electrodes in the probe-electrode assembly of the present invention;
FIG. 4 is a schematic structural diagram of an electrode sleeve in the probe-electrode assembly of the present invention.
In the figure: the electrode is 1, the electrode sleeve is 2, the first support arm is 3, the binding post is 4, the damping rotating shaft is 5, the second support arm is 6, and the base is 7.
Detailed Description
The present invention will now be described in further detail with reference to the attached drawings, which are illustrative, but not limiting, of the present invention.
Referring to fig. 1-4, a probe electrode device for measuring voltage distribution of a stator winding of a variable frequency motor comprises a base 7, a first support arm 3, a second support arm 6 and an electrode 1.
One end of the second support arm 6 is connected with the base through the damping rotating shaft 5, the other end of the second support arm 6 is connected with the first support arm 3 through the damping rotating shaft 5, the electrode 1 is arranged in the first support arm 3, and the measuring end and the connecting end of the electrode 1 both extend to the outside of the first support arm 3.
The electrode is sleeved with an insulating layer, two ends of the electrode are positioned outside the insulating layer, the insulating layer is an electrode sleeve 2 in the embodiment, the electrode is arranged in the electrode sleeve, the two ends of the electrode are positioned outside the two ends of the electrode sleeve, a clamping groove is formed in the bottom plate, the electrode sleeve is assembled in the clamping groove, and the upper portion of the electrode sleeve is positioned between the bottom plate and the cover plate.
The base is for magnetism to inhale the base, and the inside of base is provided with magnet, magnet is powerful magnet, and the material is neodymium iron boron magnet, and the size is 70mm 50mm 5mm, places in the inside rectangle cavity of base, can lay the base through magnetic attraction and fix the optional position at motor housing.
The top surface of base is provided with the support arm, and the second cradling arm passes through the support arm and is connected with the base, and the second cradling arm passes through the damping pivot to be connected with the upper end of support arm, can increase the migration range of electrode like this.
The electrode is copper electrode, adopts the thin bar copper preparation of diameter 2mm, and the measuring terminal of electrode is the finger-like reed, is '7' style of calligraphy, and reed width 1mm, thickness 0.2mm for increase with the exposed contact pressure and the area of contact of circle conductor of stator coil, the end of electrode is the platykurtic and has beaten the through-hole of diameter 4mm in the middle of the flat region, is used for the wiring and increases the area of contact with the terminal.
The electrode sleeve is a polytetrafluoroethylene insulating sleeve, the outer diameter of the middle section of the electrode sleeve is 10mm, the outer diameters of the two ends of the electrode sleeve are 8mm, the electrode is installed in the electrode sleeve, and the reed structure of the electrode measuring end is completely exposed outside the electrode sleeve.
The binding post is a copper bolt, the specification is M4 × 20mm, the binding post is fixed on the cover plate through the matching of an M4 copper nut installed in the first support arm, and the electrode is installed between the binding post and the nut through a through hole with the tail end diameter being 4mm to form stable electrical connection and is fixed on the first support arm through the through hole.
The first support arm, the second support arm, the damping rotating shaft and the base are all made of ABS thermoplastic plates and are machined through a numerically controlled lathe.
The probe electrode device provided by the utility model is characterized in that the base, the second support arm and the first support arm are sequentially connected through the damping rotating shaft, the electrode is arranged on the first support arm, and the damping rotating shaft is adopted for connection, so that the first support arm and the second support arm can rotate and stop at any position within a space rotatable angle, the position of the electrode is adjusted and fixed, the position of the electrode is adjusted through the second support arm and the first support arm, the electrode is stably and electrically connected with any turn conductor of any stator coil, and meanwhile, the base can be placed and fixed at any position of a motor shell through magnetic adsorption, so that the probe electrode device is convenient to disassemble and assemble. The probe electrode device has a simple structure, is convenient and fast to operate, can ensure the test safety and improve the test efficiency, is not limited by the model of a test use scene, can be in stable and good electrical contact with the exposed turn conductor of the stator coil, and can realize the transient voltage test of any turn conductor to the ground or between any turn conductors by configuring one group or two groups of probe electrode devices.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (8)
1. A probe electrode device for measuring voltage distribution of a stator winding of a variable frequency motor is characterized by comprising a base (7), a first support arm (3), a second support arm (6) and an electrode (1);
one end of the second support arm (6) is connected with the base through the damping rotating shaft (5), the other end of the second support arm (6) is connected with the first support arm (3) through the damping rotating shaft, the electrode (1) is arranged in the first support arm (3), the measuring end and the connecting end of the electrode (1) both extend to the outside of the first support arm (3), and the measuring end of the electrode (1) is used for abutting against a test object.
2. The probe electrode device for measuring the voltage distribution of the stator winding of the variable frequency motor is characterized in that the first support arm (3) comprises a bottom plate, a cover plate and a binding post (4), the bottom plate and the cover plate are fixedly connected through an insulating bolt, one end of the bottom plate is connected with the damping rotating shaft, the electrode is fixed between the bottom plate and the cover plate, the measuring end of the electrode (1) extends to the outside of the other end of the bottom plate, one end of the binding post (4) penetrates through the cover plate to be connected with the other end of the electrode, and the other end of the binding post (4) is used for being connected with a testing device.
3. The probe electrode device for measuring the voltage distribution of the stator winding of the variable frequency motor as claimed in claim 2, wherein the terminal is a metal bolt, and the bolt penetrates through the cover plate to be connected with and fixed to the end of the electrode in a matched mode through a nut.
4. The probe electrode device for measuring the voltage distribution of the stator winding of the variable frequency motor as claimed in claim 1, wherein the electrode is sleeved with an insulating layer, and two ends of the electrode are positioned outside the insulating layer.
5. The probe electrode device for measuring voltage distribution of stator windings of variable frequency motors in accordance with claim 4, wherein the insulation layer is an electrode sleeve (2), the electrodes are arranged in the electrode sleeve, and the electrode sleeve (2) is clamped in the first bracket arm (3).
6. The probe electrode device for measuring the voltage distribution of the stator winding of the variable frequency motor as claimed in claim 1, wherein the base is a magnetic base.
7. The probe electrode device for measuring the voltage distribution of the stator winding of the variable frequency motor as claimed in claim 1, wherein the top surface of the base is provided with a support arm, and the second support arm is connected with the base through the support arm.
8. The probe electrode device for measuring the voltage distribution of the stator winding of the variable frequency motor as claimed in claim 1, wherein the measuring end of the electrode is a finger-like reed, and the tail end of the electrode is in a circular ring structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122611971.8U CN216117738U (en) | 2021-10-28 | 2021-10-28 | Probe electrode device for measuring voltage distribution of stator winding of variable frequency motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122611971.8U CN216117738U (en) | 2021-10-28 | 2021-10-28 | Probe electrode device for measuring voltage distribution of stator winding of variable frequency motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216117738U true CN216117738U (en) | 2022-03-22 |
Family
ID=80709506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122611971.8U Active CN216117738U (en) | 2021-10-28 | 2021-10-28 | Probe electrode device for measuring voltage distribution of stator winding of variable frequency motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216117738U (en) |
-
2021
- 2021-10-28 CN CN202122611971.8U patent/CN216117738U/en active Active
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