CN114199946B - Rotor sheath detection device, detection method and processing equipment - Google Patents
Rotor sheath detection device, detection method and processing equipment Download PDFInfo
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- CN114199946B CN114199946B CN202210135137.2A CN202210135137A CN114199946B CN 114199946 B CN114199946 B CN 114199946B CN 202210135137 A CN202210135137 A CN 202210135137A CN 114199946 B CN114199946 B CN 114199946B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2688—Measuring quality factor or dielectric loss, e.g. loss angle, or power factor
- G01R27/2694—Measuring dielectric loss, e.g. loss angle, loss factor or power factor
Abstract
The application provides a rotor sheath detection device, a detection method and processing equipment, and relates to the technical field of high-speed permanent magnet motors. The rotor sheath detection device comprises a first electrode piece, a detector and a detection probe; the first electrode piece is connected with the detector, the first electrode piece is used for installing the rotor sheath, and the outer peripheral surface of the first electrode piece can be kept in contact with the inner wall surface of the rotor sheath; the detection probe comprises an insulating support and a second electrode piece arranged at one end of the insulating support, the second electrode piece is connected with the detector, a detection surface is arranged on one side of the second electrode piece and can be abutted against the outer wall surface of the rotor sheath to be matched with the first electrode piece, and the detector can acquire the dielectric loss factor value corresponding to the rotor sheath at the position of the detection surface. The application provides a rotor sheath detection device utilizes dielectric loss factor analysis method, need not to destroy rotor sheath structure, and it is high to detect the precision, ensures the performance of every rotor sheath, and then ensures the protective effect of rotor sheath to the rotor.
Description
Technical Field
The invention relates to the technical field of high-speed permanent magnet motors, in particular to a rotor sheath detection device, a detection method and processing equipment.
Background
When the high-speed permanent magnet motor operates, the rotor bears larger centrifugal force and high temperature, the permanent magnet material is manufactured by adopting a powder metallurgy process, the mechanical property is poorer, and in order to effectively protect the permanent magnet on the rotor, a carbon fiber sheath is generally adopted to protect the rotor.
The carbon fiber sheath is manufactured by adopting a winding forming process, namely, the carbon fiber sheath is manufactured by winding and curing after the carbon fiber is impregnated with resin (or the carbon fiber is impregnated with the resin). Because the mechanical property and the thermal property of the carbon fiber sheath depend on the combination condition of the carbon fiber and the matrix resin to a great extent, if the combination surface of the resin and the fiber has the defects of poor infiltration, poor curing, cracks or bubbles and the like, the performance of the carbon fiber sheath is greatly reduced, and the mechanical property and the thermal property of the carbon fiber sheath are far from the design expectation when the carbon fiber sheath operates in a high-temperature and high-stress environment. In addition, when the carbon fiber sheath runs in a humid environment, water vapor enters the interface of the carbon fiber sheath along the defects, so that plasticization, embrittlement, secondary crosslinking of the water vapor and polymers and the like are caused, the defects are amplified, and the performance of the carbon fiber sheath is further reduced.
Thus, in order to ensure the performance of the carbon fiber sheath, the performance of the carbon fiber sheath needs to be evaluated before use. However, the existing evaluation method mostly adopts an NOL ring method to test the mechanical properties, and the method is to take part of ring-cut samples or adopt the same process to manufacture ring-shaped samples to test, so that all produced carbon fiber sheaths are not directly tested, and the method has limitation and cannot reflect the performance of each complete carbon fiber sheath.
Disclosure of Invention
The application aims to provide a rotor sheath detection device, a detection method and processing equipment, which are used for solving the defects in the prior art.
In order to achieve the above object, in a first aspect, the present application provides a rotor sheath detecting device, including a first electrode element, a detector, and a detecting probe;
the first electrode element is connected with the detector, the first electrode element is used for installing a rotor sheath, and the outer peripheral surface of the first electrode element can be kept in contact with the inner wall surface of the rotor sheath;
the detection probe comprises an insulating support and a second electrode piece arranged at one end of the insulating support, the second electrode piece is connected with the detector, a detection surface is arranged on one side, away from the insulating support, of the second electrode piece, the detection surface can be abutted to the outer wall surface of the rotor sheath to be matched with the first electrode piece, and therefore the detector can acquire the dielectric loss factor value corresponding to the rotor sheath at the detection surface.
With reference to the first aspect, in one possible implementation manner, an insulating layer is provided on the detection surface.
With reference to the first aspect, in a possible implementation manner, the rotor sheath detection apparatus further includes a marker, the marker is disposed on the insulating support, and the marker can mark on the rotor sheath.
With reference to the first aspect, in a possible implementation manner, the marking device includes a mounting frame, and a driving member and a marking head that are disposed on the mounting frame, the mounting frame is disposed on the insulating support, the marking head is disposed corresponding to the second electrode, and the driving member can drive the marking head to mark on the rotor sheath.
With reference to the first aspect, in one possible implementation manner, a dielectric loss factor measuring bridge is arranged in the detector, and the dielectric loss factor measuring bridge is used for measuring a dielectric loss factor value of the rotor sheath.
With reference to the first aspect, in one possible embodiment, the detection surface is adapted to the shape of the outer wall surface of the rotor sheath.
With reference to the first aspect, in a possible implementation manner, the rotor sheath detection apparatus further includes a detection platform, and a first driving mechanism and a second driving mechanism that are disposed on the detection platform;
the first driving mechanism is connected with the first electrode piece and can drive the first electrode piece to rotate around the axis of the first electrode piece;
the second driving mechanism is connected with the insulating support, and the second driving mechanism can drive the insulating support to drive the second electrode piece to move along the axial direction and the radial direction of the rotor sheath.
In a second aspect, the present application further provides a detection method, to which the rotor sheath detection apparatus provided in the first aspect is applied, the detection method including:
installing the rotor sheath to be detected;
dividing the outer wall surface of the rotor sheath into a preset number of regions to be detected;
detecting the dielectric loss factor value of each region to be detected;
wherein, the region to be detected is matched with the detection surface.
With reference to the second aspect, in a possible implementation manner, the method for detecting the dielectric loss factor value of each suspected region further includes marking the corresponding suspected region when the detected dielectric loss factor value is greater than a preset value.
In a third aspect, the present application further provides a rotor sheath processing apparatus, configured to process a carbon fiber sheath, where the rotor sheath processing apparatus includes the rotor sheath detection device provided in the first aspect, where the first electrode element is a winding roller for processing the rotor sheath.
Compare in prior art, the beneficial effect of this application:
the application provides a rotor sheath detection device, a detection method and processing equipment, wherein the rotor sheath detection device realizes the installation and the positioning of a rotor sheath through a first electrode piece, and the peripheral surface of the first electrode piece is kept in butt joint with the inner wall surface of the rotor sheath. When detecting, the detection surface of the second electrode piece is abutted with the region to be detected of the outer wall surface of the rotor sheath so as to be matched with the first electrode piece. At the moment, the first pole element, the rotor sheath, the second pole element and the detector form a complete test loop, and the rotor sheath is used as a medium between the first pole element and the second pole element. Since the dielectric loss factor is defined as the ratio of the active current component to the reactive current component in the medium, the corresponding dielectric loss factor value is measured by applying an alternating electric field to the medium via the first pole element and the second pole element. If the detection area is free of defects, the dielectric loss factor value is not obviously increased along with the voltage change; if the detection area has defects (such as poor infiltration, poor solidification, cracks or bubbles), the dielectric loss value obviously changes along with the voltage rise, and whether the rotor sheath has defects or not can be judged through the change of the dielectric loss factor value. The application provides a rotor sheath detection device utilizes dielectric loss factor analysis method, under the condition of not destroying rotor sheath structure, can detect the rotor sheath of every production, and it is high to detect the precision, has ensured the performance of every rotor sheath, and then ensures the protective effect of rotor sheath to the rotor.
Rotor sheath processing equipment has used rotor sheath detection device, and rotor sheath detection device collects production and detects as an organic whole from this, realizes that production detects one step and puts in place, reduces follow-up increase detection procedure again, and then realizes detecting every rotor sheath of production, ensures the performance of every rotor sheath when dispatching from the factory.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram illustrating a rotor sheath detection apparatus provided in an embodiment of the present application;
FIG. 2 is a schematic diagram of a detection probe of the rotor sheath detection apparatus shown in FIG. 1;
FIG. 3 shows an enlarged partial schematic view at A in FIG. 2;
FIG. 4 is a schematic perspective view of the rotor sheath testing apparatus shown in FIG. 1 illustrating the testing probe engaged with the first pole element;
FIG. 5 is a schematic structural diagram of another inspection probe provided in the embodiments of the present application;
FIG. 6 is a schematic structural diagram illustrating division of a rotor sheath inspection area according to an embodiment of the present application;
FIG. 7 illustrates a detection method applied with a rotor sheath detection device according to an embodiment of the present application;
fig. 8 shows a schematic structural diagram of another rotor sheath detection device provided in an embodiment of the present application.
Description of the main element symbols:
10-a rotor sheath; 100-a first pole element; 110-a winding roller; 200-a detector; 300-a detection probe; 310-an insulating support; 320-a second pole element; 321-a detection surface; 330-an insulating layer; 400-a marker; 410-a mounting frame; 420-a driver; 430-marking head; 431-a marking; 500-detection platform; 600-a first drive mechanism; 700-second drive mechanism.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Example one
Referring to fig. 1, the present embodiment provides a rotor sheath detection device, and in particular, relates to a rotor sheath defect detection device for a high-speed permanent magnet motor. In the present embodiment, the detected rotor sheath 10 is a carbon fiber sheath, but may be a sheath made of other non-metal materials.
The carbon fiber sheath is a resin-based carbon fiber composite material formed by the carbon fiber and the impregnated resin in the carbon fiber winding process. The mechanical property and the thermal property of the composite material depend on the condition that the carbon fiber is combined with matrix resin to a great extent, if the defects of poor infiltration, poor curing, cracks or bubbles and the like exist on the combination surface of the resin and the fiber, the performance of the sheath is greatly reduced, and the mechanical property and the thermal property of the composite material are far from the design expectation when the composite material is operated in a high-temperature and high-stress environment. On the one hand, the defects can reduce the mechanical property of the carbon fiber sheath, and on the other hand, hot spots (due to the extremely small thermal conductivity of air) are formed at the defects in a high-temperature environment, so that nearby resin is softened, and the influence of the defects on the performance is amplified again. In addition, when the material is operated in a humid environment, water vapor enters the material interface along the defects, so that the effects of plasticization, embrittlement, secondary crosslinking of the water vapor and the polymer and the like are caused, further defect amplification is caused, and the performance of the sheath is reduced.
Thus, in order to ensure the performance of the carbon fiber sheath, the present embodiment provides a rotor sheath detection device for performing performance evaluation on the rotor sheath 10.
Referring to fig. 1, fig. 2 and fig. 3, in the present embodiment, the rotor sheath detecting apparatus includes a first electrode 100, a detector 200 and a detecting probe 300. The first electrode member 100 is electrically connected to the detector 200, the rotor sheath 10 is attachable to the first electrode member 100, and the outer peripheral surface of the first electrode member 100 can be held in contact with the inner wall surface of the rotor sheath 10.
Further, the outer peripheral surface of the first pole element 100 is a cylindrical surface, and the cylindrical surface is adapted to the inner wall surface of the rotor sheath 10.
The detecting probe 300 includes an insulating support 310 and a second electrode 320 disposed at one end of the insulating support 310, the second electrode 320 is electrically connected to the detector 200, and a detecting surface 321 is disposed on a side of the second electrode 320 away from the insulating support 310.
A dielectric loss factor measuring bridge is arranged in the detector 200, and the dielectric loss factor measuring bridge is used for mechanically measuring the dielectric loss factor value of the rotor sheath 10.
Further, in order to improve the convenience of the operation, an on-off switch may be provided on the insulating support 310 or the detector 200 to control the start and stop of the test by the on-off switch.
Referring to fig. 4, when performing the detection, the rotor sheath 10 is installed on the first electrode 100, and the insulating support 310 is driven to make the detection surface 321 of the second electrode 320 abut against the outer wall surface of the rotor sheath 10, so that the second electrode 320 is matched with the first electrode 100. It can be understood that, since the outer peripheral surface of the first electrode 100 abuts against the inner wall surface of the rotor sheath 10, the first electrode 100, the rotor sheath 10, the second electrode 320 and the detector 200 form a complete test circuit, and the detector 200 can obtain the dielectric loss factor value of the abutting region of the detection surface 321 and the rotor sheath 10. Therefore, by adjusting the position of the detection surface 321 of the second electrode element 320 on the outer wall surface of the rotor sheath 10, dielectric loss factor values of different areas of the outer wall surface of the rotor sheath 10 can be obtained, and then the obtained dielectric loss factor values are evaluated and analyzed to determine whether the rotor sheath 10 has defects.
The on-off key can control the on-off of the test loop, so that the aim of controlling the rotor sheath detection device to start testing or stop testing is fulfilled.
The detection principle of the rotor sheath detection device provided by the embodiment is as follows: the dielectric loss tangent angle (hereinafter collectively referred to as dielectric loss factor) of the interlayer dielectric of the rotor sheath 10 (resin-based composite material) was measured and analyzed.
Wherein the dielectric loss factor is defined as the active current component I in the mediumRAnd a reactive current component IcThe ratio of (A) to (B) is shown as follows:
tanδ=IR/Ic
above, the active current component IRThe intrinsic conductance of the medium (effective current flowing through the medium) can be embodied; reactive current component IcThe inherent ability of the medium to store charge can be demonstrated.
It will be appreciated that in an ideal medium, the tan delta value (dielectric loss factor value) varies very little with voltage rise when an alternating electric field is applied across the medium. When there is a defect (such as poor wetting, poor curing, crack or bubble) in the medium, the Ic value decreases accordingly, IRThe value increases and thus the tan delta value increases. In addition, when the voltage reaches a certain value, the air gap discharge in the defect causes a large amount of ionization loss, which results in IRThe value increases significantly, with a concomitant significant increase in the tan delta value.
According to the above principle, when the rotor sheath 10 is inspected, the portions of the rotor sheath 10 corresponding to the first pole element 100 and the second pole element 320 at the same time correspond to the medium between the first pole element 100 and the second pole element 320. Thus, an alternating electric field is applied to the medium via the first electrode member 100 and the second electrode member 320, and corresponding dielectric loss factor values are measured.
It can be understood that if the detection area is free of defects, the dielectric loss factor value is not obviously increased along with the voltage change; if the detection area has defects (such as poor infiltration, poor curing, cracks or bubbles), the dielectric loss factor value will obviously change along with the voltage rise, and then whether the rotor sheath 10 has defects can be judged through the change of the dielectric loss factor value. Since the rotor sheath detection apparatus provided in this embodiment is dedicated to detecting the same type of rotor sheath 10, the fluctuation range of the qualified dielectric loss factor value of the rotor sheath 10 is small, and therefore, a preset value can be set according to the data measured many times, the measured dielectric loss factor value is compared with the preset value, and if the dielectric loss factor value is greater than the preset value, it can be determined that a defect exists on the rotor sheath 10, and the position of the defect corresponds to the region where the detection surface 321 of the second electrode 320 is located.
Furthermore, with the increase of the test experience, one or more voltage values (which should reflect the ionization loss caused by the air gap discharge in the defect) can be set, the dielectric loss factor under the corresponding voltage value is measured, and the existence of the defect in the corresponding region can be judged by comparing the dielectric loss factor value.
Referring to fig. 2 and 4, further, the detecting surface 321 is adapted to the shape of the outer wall surface of the rotor sheath 10, that is, the detecting surface 321 is designed to be an arc surface, so that the detecting surface 321 can better adhere to the outer wall surface of the rotor sheath 10, and the detecting accuracy is improved.
From the above analysis of the dielectric loss tangent, it can be understood that the only variable affecting the value of the dielectric loss tangent is I of the rotor sheath 10 at the corresponding region of the first pole element 100 and the second pole element 320RAnd IcThe thickness of the rotor sheath 10 and the areas of the first pole element 100 and the second pole element 320 have no direct influence on the test results. However, it is considered that when the rotor sheath 10 has a defect, the carbon fiber filaments inside the matrix resin may be directly exposed to the outer wall surface of the rotor sheath 10. Since the carbon fiber filament is a conductor, when the detection surface 321 of the second electrode element 320 directly contacts the carbon fiber filament, the test loop is conducted, and the test result is affected.
Referring to fig. 3 and 4, in order to avoid the above problem, in the present embodiment, an insulating layer 330 is disposed on the detecting surface 321. Further, the insulating layer 330 is made of a soft material to prevent the outer wall surface of the rotor sheath 10 from being scratched.
Optionally, the insulating layer 330 is an insulating film or an insulating spacer.
Further, in order to ensure that the detection surface 321 of the second electrode 320 can effectively contact with the rotor sheath 10, a pressure sensor may be disposed between the second electrode 320 and the insulating support 310, and whether the detection surface 321 of the second electrode 320 effectively contacts with the rotor sheath 10 is determined according to the pressure fed back by the pressure sensor.
In some embodiments, a proximity sensor, a distance sensor, or a capacitance measuring structure may be further disposed on the insulating support 310 to determine whether the detecting surface 321 of the second pole element 320 is in effective contact with the rotor sheath 10.
Referring to fig. 4 and 5, in the present embodiment, the rotor sheath detection apparatus further includes a marker 400, the marker 400 is disposed on the insulating support 310, and the marker 400 can mark the rotor sheath 10.
Specifically, the marker 400 includes a mounting frame 410, and a driving member 420 and a marking head 430 disposed on the mounting frame 410, wherein the mounting frame 410 is disposed on the insulating support 310. The marking head 430 is sleeved on the insulating support 310 and is disposed corresponding to the second electrode 320. The driving member 420 can output a reciprocating linear motion, the output end of the driving member 420 is connected to the marking head 430, and the driving member 420 can drive the marking head 430 to move toward or away from the outer wall surface of the rotor sheath 10.
The marking head 430 is a frame structure, and the second electrode 320 is located in the frame of the marking head 430, so as to avoid the interference between the marking head 430 and the second electrode 320 in movement.
The side of the marking head 430 facing the rotor sheath 10 is a marking part 431, and the marking part 431 can be marked on the outer wall surface of the rotor sheath 10 for distinguishing. And the shape of the end face of the marking portion 431 is also fitted to the outer wall surface of the rotor sheath 10.
Referring to fig. 1, fig. 2, fig. 4, fig. 6 and fig. 7, the present embodiment also provides a detection method using the above-mentioned rotor sheath detection apparatus, which is collectively referred to as a detection method, and the detection method includes:
s100: the rotor sheath 10 to be tested is installed.
Specifically, the rotor sheath 10 to be detected is mounted on the first pole element 100 to realize the positioning of the rotor sheath 10, and the whole inner wall surface of the mounted rotor sheath 10 is kept in contact with the first pole element 100.
S200: the outer wall surface of the rotor sheath 10 is divided into a preset number of regions to be inspected.
Specifically, the outer wall surface of the rotor sheath 10 is divided into a predetermined number of virtual regions to be inspected, wherein the regions to be inspected are adapted to the detection surface 321 of the second electrode element 320, i.e., have the same shape and size. Therefore, the outer wall surface of the rotor sheath 10 can be divided into a corresponding number of regions to be detected according to the area of the detection surface 321, so that the second electrode element 320 can perform overall detection on the outer wall surface of the rotor sheath 10.
S300: and detecting the dielectric loss factor value of each region to be detected.
Specifically, the second electrode element 320 is driven by the insulating support 310 to sequentially detect each region to be detected, so as to obtain a dielectric loss factor value of each region to be detected.
For example: the outer wall surface of the rotor sheath 10 is divided into N regions to be inspected, wherein a regions to be inspected are arranged in a row in the axial direction of the rotor sheath 10, b regions to be inspected are arranged in a circle in the circumferential direction of the rotor sheath 10, the central angle of each region to be inspected is an angle theta, and a x b = N is satisfied.
The first detection mode is as follows:
s310: the test is started by selecting one end of the rotor sheath 10 and selecting one area to be tested at the end.
S311: then the second pole element 320 is driven by the insulating support 310 to move along the axial direction of the rotor sheath 10, and the detection of a to-be-detected areas in one row is completed in sequence. Wherein the distance of each movement of the second pole element 320 is the distance of a single area to be inspected.
S312: and then, the first electrode element 100 drives the rotor sheath 10 to rotate by an angle theta, and the step S311 is repeated to complete the detection of the other row of regions to be detected.
S313: and repeating the step S312 until the detection of the N to-be-detected areas is completed.
The second detection mode is as follows:
s320: the test is started by selecting one end of the rotor sheath 10 and selecting one area to be tested at the end.
S321: then, the first electrode member 100 drives the rotor sheath 10 to rotate, and the detection of b regions to be detected of one circle of the rotor sheath 10 in the circumferential direction is sequentially completed. Wherein, the angle of each rotation of the rotor sheath 10 is theta angle, and the rotation direction is kept unchanged.
S322: then the second pole element 320 is driven by the insulating support 310 to move a distance of a single suspected region along the axial direction of the rotor sheath 10, and the step S311 is repeated to complete the detection of b suspected regions of another circle.
S323: and repeating the step S322 until the detection of the N to-be-detected areas is completed.
Referring to fig. 5, in step S300, the method for detecting the value of the dielectric loss factor of each suspected area further includes: and when the detected dielectric loss factor value is larger than a preset value, marking the corresponding region to be detected. Specifically by marker 400, although it may be manually marked.
Of course, in some embodiments, the two detection methods can be selectively combined to achieve the same purpose.
Compared with the prior art, the rotor sheath detection device provided by the embodiment utilizes a dielectric loss factor analysis method, can detect the rotor sheath 10 of each production under the condition of not damaging the structure of the rotor sheath 10, has high detection precision and good effect, can effectively screen out the defective rotor sheath 10, ensures the performance of each rotor sheath 10, and further ensures the protection effect of the rotor sheath 10 on the rotor.
Referring to fig. 4, in addition, the present embodiment also provides a rotor sheath 10 processing apparatus, which is used for processing the rotor sheath 10. Wherein, the rotor sheath 10 processing equipment includes the rotor sheath detection device provided above, and the first pole element 100 is a winding roller 110 for processing the rotor sheath 10, and the cylindrical surface of the winding roller 110 abuts against the inner wall surface of the whole rotor sheath 10.
Example two
Referring to fig. 1 and 8, the present embodiment provides a rotor sheath detection apparatus, and in particular, relates to a rotor sheath defect detection apparatus for a high-speed permanent magnet motor. The present embodiment is an improvement on the technology of the first embodiment, and compared with the first embodiment, the difference is that:
in this embodiment, the rotor sheath detecting apparatus further includes a detecting platform 500, and a first driving mechanism 600 and a second driving mechanism 700 disposed on the detecting platform 500. The first driving mechanism 600 is connected to the first electrode 100, and the first driving mechanism 600 can drive the first electrode 100 to rotate around its axis. The second driving mechanism 700 is connected to the insulating support 310, and the second driving mechanism 700 can drive the insulating support 310 to drive the second electrode element 320 to move axially and radially along the rotor sheath 10.
Further, the first driving mechanism 600 is a motor, and optionally, the motor is a stepping motor or a servo motor.
The second driving mechanism 700 includes a first linear driving assembly and a second linear driving assembly, wherein the first linear driving assembly is disposed on the detection platform 500, the second linear driving assembly is disposed at an output end of the first linear driving assembly, and output directions of the first linear driving assembly and the second linear driving assembly are perpendicular to each other.
The insulating support 310 is connected to the output of the second linear drive assembly. The first linear driving component can drive the second linear driving component to move axially along the rotor sheath 10, so as to drive the insulating support 310 to move synchronously. The second linear driving assembly drives the insulating support 310 to move radially of the rotor sheath 10, so that the detecting surface 321 of the second electrode 320 abuts against the outer wall surface of the rotor sheath 10.
Optionally, the first linear driving assembly and the second linear driving assembly can be selected from a linear motor, an electric push rod, an air cylinder or an oil cylinder.
In some embodiments, the first drive mechanism 600 is a multi-axis motion robot.
According to the rotor sheath detection device provided by the embodiment, manual detection can be replaced by the first driving mechanism 600 and the second driving mechanism 700, automatic detection can be realized after the rotor sheath detection device is connected to a control system, the labor intensity of workers is greatly reduced, and the detection efficiency is improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (8)
1. A rotor sheath detection device is used for detecting a rotor sheath, wherein the rotor sheath is a carbon fiber sheath, and the rotor sheath detection device is characterized by comprising a first electrode piece, a detector and a detection probe;
the first electrode is connected with the detector, the first electrode is used for installing a rotor sheath, and the outer peripheral surface of the first electrode can be kept in contact with the inner wall surface of the rotor sheath;
the detection probe comprises an insulating support and a second electrode piece arranged at one end of the insulating support, the second electrode piece is connected with the detector, a detection surface is arranged on one side, away from the insulating support, of the second electrode piece, and the detection surface can be abutted against the outer wall surface of the rotor sheath to be matched with the first electrode piece, so that the detector can obtain a dielectric loss factor value corresponding to the rotor sheath at the detection surface;
the detection surface is provided with an insulating layer, the detector is internally provided with a dielectric loss factor measuring bridge, and the dielectric loss factor measuring bridge is used for measuring the dielectric loss factor value of the rotor sheath.
2. The rotor sheath testing device of claim 1, further comprising a marker disposed on the insulating support, the marker capable of marking on the rotor sheath.
3. The rotor sheath detection device of claim 2, wherein the marker comprises a mounting frame, a driving member and a marking head, the driving member and the marking head are arranged on the mounting frame, the mounting frame is arranged on the insulating support, the marking head corresponds to the second electrode piece, and the driving member can drive the marking head to mark on the rotor sheath.
4. The rotor sheath detecting device according to claim 1, wherein the detecting surface is adapted to a shape of an outer wall surface of the rotor sheath.
5. The rotor sheath detection device of claim 1, further comprising a detection platform and a first driving mechanism and a second driving mechanism disposed on the detection platform;
the first driving mechanism is connected with the first electrode piece and can drive the first electrode piece to rotate around the axis of the first electrode piece;
the second driving mechanism is connected with the insulating support, and the second driving mechanism can drive the insulating support to drive the second electrode piece to move along the axial direction and the radial direction of the rotor sheath.
6. A detection method, wherein the rotor sheath detection apparatus according to any one of claims 1 to 5 is applied, the detection method comprising:
installing the rotor sheath to be detected;
dividing the outer wall surface of the rotor sheath into a preset number of regions to be detected;
detecting the dielectric loss factor value of each region to be detected;
wherein, the region to be detected is matched with the detection surface.
7. The detection method according to claim 6, wherein the method for detecting the dielectric loss factor value of each suspected region further comprises marking the corresponding suspected region when the detected dielectric loss factor value is greater than a preset value.
8. A rotor sheath machining apparatus for machining a carbon fiber sheath, comprising the rotor sheath detecting device according to any one of claims 1 to 5, wherein the first electrode member is a wind roller for the machining of the rotor sheath.
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| CN113702450A (en) * | 2020-05-22 | 2021-11-26 | 新疆金风科技股份有限公司 | Method and device for detecting defects of magnetic pole coating |
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| CN1351710A (en) * | 1999-03-29 | 2002-05-29 | 奥蒂斯电梯公司 | Method and apparatus for detecting elevator rope degradation using electrical or magnetic energy |
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