CN105698711B - generator stator core perpendicularity online monitoring device and method - Google Patents
generator stator core perpendicularity online monitoring device and method Download PDFInfo
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- CN105698711B CN105698711B CN201610143405.XA CN201610143405A CN105698711B CN 105698711 B CN105698711 B CN 105698711B CN 201610143405 A CN201610143405 A CN 201610143405A CN 105698711 B CN105698711 B CN 105698711B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
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Abstract
the invention belongs to the technical field of generators, and particularly relates to perpendicularity change monitoring in a manufacturing and forming process of a generator stator core. Generator stator core straightness on-line monitoring device that hangs down includes: the laser emission unit is positioned on one side of the stator iron core of the generator and arranged on the motion platform, and the motion platform is used for adjusting the position and the emission direction of the laser emission unit; the photoelectric position sensors are arranged along different heights of the stator iron core of the generator, the receiving surfaces of the photoelectric position sensors face the moving platform downwards, the linear distance between each photoelectric position sensor and the stator iron core is unequal, and the photoelectric position sensors receive laser signals emitted by the laser emitting unit to generate corresponding position coordinate information when the laser emitting unit moves to different positions; and the processing device is used for obtaining the verticality data of the generator stator core according to the position coordinate information. The invention can realize automatic real-time verticality detection in the stator core manufacturing and forming process, and saves labor cost.
Description
Technical Field
the invention belongs to the technical field of generators, and particularly relates to perpendicularity change monitoring in a manufacturing and forming process of a generator stator core.
background
The stator core of the generator is an important component for forming a magnetic circuit of the generator and fixing a stator winding, in order to reduce hysteresis and eddy current loss of the core, the stator core of the modern large-capacity generator is often formed by laminating high-quality cold-rolled silicon steel sheets with high magnetic conductivity and low loss, in the manufacturing and forming process of the stator core of the generator, the verticality is one of important parameters for implementing quality control, and the detection method of the verticality of the stator core of the generator at present mainly comprises the following steps: after a generator stator iron core is manufactured and molded, a plumb line is fixed to the top of the iron core, then the distance between the plumb line and the outer end face of the stator is measured in a segmented mode through a ruler manually, the distance is counted, and finally the verticality error is fitted through an electronic form tool of a computer such as an excel form. The above detection method mainly has the following problems: 1) because the generator stator core has large overall dimension, manual detection is adopted, the workload is large, the labor cost is high, the efficiency is low, and the error is large; 2) because the stator core manufacturing and forming process is carried out under severe conditions such as high temperature, vibration and the like, the method cannot monitor the verticality change in the stator core forming process in real time.
disclosure of Invention
Aiming at the technical problems, the device and the method for monitoring the verticality of the generator stator core on line are provided to solve the defects in the prior art;
The specific technical scheme is as follows:
the utility model provides a generator stator core straightness on-line monitoring device that hangs down, wherein, includes:
the laser emission unit is positioned on one side of a generator stator iron core and arranged on a motion platform, and the motion platform is used for adjusting the position and the emission direction of the laser emission unit;
the photoelectric position sensors are arranged at different heights along the height direction of the generator stator core, the receiving surfaces of the photoelectric position sensors face the moving platform downwards, the linear distance between each photoelectric position sensor and the stator core is unequal, and when the laser emission unit moves to different positions, the photoelectric position sensors receive laser signals emitted by the laser emission unit to generate corresponding position coordinate information;
And the processing device is connected with the signal output ends of the photoelectric position sensors and is used for obtaining the verticality data of the stator core of the generator according to the position coordinate information.
foretell generator stator core hangs down straightness on-line monitoring device, generator stator core is equipped with the outer wall, and is a plurality of photoelectric position sensor's each adsorbs through a magnetism formula installing support respectively in the outer wall.
foretell generator stator core straightness on-line monitoring device that hangs down, generator stator core's back is equipped with a location muscle groove, and a plurality of levels are drawn forth the pole certainly the different positions in location muscle groove are drawn forth, follow distribute on generator stator core's the not co-altitude, each level is drawn forth and is set up one on the pole photoelectric position sensor.
foretell generator stator core straightness on-line monitoring device that hangs down, motion platform includes:
the working platform is used for providing a horizontal table top;
The horizontal moving guide rail is arranged on the working platform;
The horizontal moving sliding table is arranged on the horizontal moving guide rail, takes the horizontal moving guide rail as direction guide and moves horizontally under the drive of a drive device;
The adapter plate is installed on the horizontal moving sliding table and used for installing the laser emission unit, and the adapter plate is close to the generator stator core or far away from the generator stator core under the driving of the horizontal moving sliding table.
foretell generator stator core straightness on-line monitoring device that hangs down, motion platform includes:
The working platform is used for providing a horizontal table top;
The horizontal moving guide rail is arranged on the working platform;
The horizontal moving sliding table is arranged on the horizontal moving guide rail, takes the horizontal moving guide rail as direction guide and moves horizontally under the drive of a drive device;
The two-dimensional rotary leveling platform is fixedly arranged on the horizontal moving sliding table and rotates along the X direction and/or the Y direction under the control of a controller;
the adapter plate is arranged on the two-dimensional rotary leveling platform and is adjusted to be within a set levelness range under the action of the two-dimensional rotary leveling platform;
the laser emission unit mounting seat is rigidly connected with the adapter plate, and the laser emission unit is mounted on the laser emission unit mounting seat.
foretell generator stator core straightness on-line monitoring device that hangs down, work platform's bottom sets up four at least leveling parallels, leveling parallels are used for adjusting work platform's levelness.
the device for monitoring the verticality of the generator stator core on line further comprises a two-dimensional electronic level gauge which is fixedly arranged on the adapter plate and used for measuring the levelness of the adapter plate and sending the levelness to the controller.
The generator stator core perpendicularity online monitoring method is used for monitoring the generator stator core perpendicularity online monitoring device in the generator stator core forming process, and comprises the following steps of:
step s 1: adjusting the moving platform to enable the laser light spot emitted by the laser emitting unit to be emitted vertically upwards;
Step s 2: horizontally moving the laser emitting unit to a predetermined position point to align each of the photoelectric position sensors, respectively;
step s 3: repeating said step s2 to obtain a plurality of coordinate data values collected by each of said photoelectric position sensors;
step s 4: and calculating the perpendicularity error of the electronic iron core of the generator according to the coordinate data values acquired by each photoelectric position sensor.
in the method for online monitoring of the perpendicularity of the generator stator core, before the step s1, in the hot press forming process, horizontal leading-out rods are respectively led out from different heights of the generator stator core, a photoelectric position sensor is arranged at a free end of each horizontal leading-out rod, a receiving surface of each photoelectric position sensor faces downwards to the moving platform, and the linear distance from each photoelectric position sensor to the stator core is unequal.
In the above method for online monitoring of the perpendicularity of the stator core of the generator, the step s1 includes the following steps:
step s 11: moving the laser emitting unit to each preset position point, and adjusting the levelness of the laser emitting unit in a preset precision range at each preset position point;
step s 12: judging whether the laser spot of the laser emitting unit is within the range of the central area of the photoelectric position sensor at each predetermined position point, if so, executing step s 2; if not, step s13 is performed separately;
Step s 13: adjusting the motion platform and repeating step s 12.
has the advantages that: above technical scheme can realize the automatic real-time straightness that hangs down of stator core manufacturing and forming in-process and detect, compares artifical detection mode, and its stability is high, the precision is high, efficient, practiced thrift the cost of labor, help promoting the management and control of stator core manufacturing quality.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of the motion platform of the present invention;
FIG. 3 is a schematic flow chart of the method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
Referring to fig. 1, a generator stator core straightness on-line monitoring device that hangs down, wherein, includes:
the laser emission unit 21 is positioned on one side of the generator stator iron core 11 and arranged on a moving platform 2, and the moving platform 2 is used for adjusting the position and the emission direction of the laser emission unit 21;
the photoelectric position sensors 31a, 31b, 31c and 31d are arranged at different heights along the height direction of the generator stator iron core 11, the receiving surfaces of the photoelectric position sensors 31a, 31b, 31c and 31d face the moving platform 2 downwards, the linear distance between each photoelectric position sensor and the generator stator iron core is different, and when the laser emission unit 21 moves to different position points, the photoelectric position sensors receive laser signals emitted by the laser emission unit 21 to generate corresponding position coordinate information;
And the processing device is connected with the signal output ends of the photoelectric position sensors 31a, 31b, 31c and 31d and is used for obtaining the perpendicularity data of the generator stator iron core 11 according to the position coordinate information.
if the stator core has verticality deviation, magnetic vibration can be formed, the vibration of the unit is increased, if the unit runs in the state for a long time or the vibration is further increased, unpredictable damage can be caused to the unit mechanism, and further major accidents or damage can be caused; according to the invention, the laser emitting unit is used as a vertical reference and is combined with the photoelectric position sensor, so that the verticality error change in the manufacturing and forming process of the generator stator core is monitored in real time, the traditional plumb line is replaced, the detection waiting time is shorter, and the stability is higher.
Data transmission can be carried out between the photoelectric position sensors 31a, 31b, 31c and 31d and the processing device through a USB data line, for example, each coordinate value acquired by the photoelectric position sensors 31a, 31b, 31c and 31d can be directly transmitted to a computer, and fitting of a perpendicularity error curve is completed through the computer; and further provides a corresponding stator core adjusting scheme for a stator core assembly worker to refer to.
In the device for monitoring the verticality of the generator stator core on line, the generator stator core 11 is provided with the outer wall 12, and each of the plurality of photoelectric position sensors can be respectively adsorbed on the outer wall 12 through a magnetic type mounting bracket. If the photoelectric position sensor is installed at one end of each magnetic type installation support, the other end of each magnetic type installation support can be adsorbed on the outer wall of the stator iron core 11 of the generator under the action of the magnet. The formula installing support is inhaled to magnetism that a plurality of sizes differ runs through the heat preservation cover, and it is installed to the top to separate fixed distance upwards to step-like from the bottom of generator.
Foretell generator stator core straightness on-line monitoring device that hangs down, generator stator core 11's back is equipped with a location muscle groove, and the pole is drawn forth to a plurality of levels from the different positions in location muscle groove, distributes on the co-altitude along generator stator core 11, sets up a photoelectric position sensor on each level draws forth the pole. If the fixed end of the horizontal leading-out rod is fixedly connected with the positioning rib groove, the free end of the horizontal leading-out rod is provided with a photoelectric position sensor.
because the stator core manufacturing and forming process is carried out under severe conditions of high temperature, vibration and the like, the photoelectric position sensor is suitable for detecting the verticality error in the cold and hot pressing process of the generator stator core in real time through the magnetic type mounting bracket or the horizontal leading-out rod.
the photoelectric Position sensor can adopt a Position Sensitive Device (PSD) detector, has the advantages of high sensitivity, high resolution, high response speed, simple configuration circuit and the like, and is widely applied to the precise measurement of Position coordinates.
foretell generator stator core straightness on-line monitoring device that hangs down, motion platform 2 can include:
a work platform 23 for providing a horizontal table;
A horizontal moving guide rail 24 provided on the working platform 23;
A horizontal movement sliding table 25 which is arranged on the horizontal movement guide rail 24, is guided by taking the horizontal movement guide rail 24 as a direction, and is driven by a driving device 20 to move horizontally;
The adapter plate 27 is mounted on the horizontal moving sliding table 25 and used for mounting the laser emitting unit 21, and the adapter plate 27 is driven by the horizontal moving sliding table 25 to move close to the generator stator core 11 or move away from the generator stator core 11.
The above-mentioned generator stator core straightness on-line monitoring device that hangs down, motion platform 2 can also include:
a work platform 23 for providing a horizontal table;
A horizontal moving guide rail 24 provided on the working platform 23;
A horizontal movement sliding table 25 which is arranged on the horizontal movement guide rail 24, is guided by taking the horizontal movement guide rail 24 as a direction, and is driven by a driving device 20 to move horizontally;
the two-dimensional rotary leveling platform 26 is fixedly arranged on the horizontal moving sliding table and rotates along the X direction and/or the Y direction under the control of a controller;
the adapter plate 27 is arranged on the two-dimensional rotary leveling platform 26, and the adapter plate 27 is adjusted to be within a set levelness range under the action of the two-dimensional rotary leveling platform 26;
And a laser emitting unit mounting seat 28 rigidly connected to the adapter plate, wherein the laser emitting unit 21 is mounted on the laser emitting unit mounting seat 28.
According to the generator stator core verticality on-line monitoring device, at least four leveling sizing blocks 22 are arranged at the bottom of the working platform 23, and the leveling sizing blocks 22 are used for adjusting the levelness of the working platform 23.
The device for monitoring the perpendicularity of the generator stator core on line further comprises a two-dimensional electronic level meter 29 which is fixedly arranged on the adapter plate 27 and used for measuring the levelness of the adapter plate 27 and sending the levelness to the controller.
One specific embodiment: the leveling sizing blocks 22 are directly placed on the working ground of the workshop, the working platform 23 is placed on the four leveling sizing blocks 22, and the levelness of the working platform 23 is ensured by adjusting the four leveling sizing blocks; the horizontal moving guide rail 24 is fixed on the working platform 23 through screws, the horizontal moving sliding table 25 is guided in the direction of the horizontal moving guide rail 24, and moves in the horizontal direction under the driving force of the driving device 20 of the horizontal moving sliding table 25, the two-dimensional rotating leveling platform 26 is installed on the horizontal moving sliding table 25 through screws, and the adapter plate 27 is installed on the two-dimensional rotating leveling platform 26 through screws; the laser emission unit mounting seat 28 is rigidly connected with the adapter plate 27 through screws, the outer circular surface of the laser emission unit 21 is in small clearance fit with the holes of the laser emission unit mounting seat 28, and the laser emission unit 21 is fixed by two set screws; the two-dimensional electronic level 29 is fixed to the adapter plate 27 by mounting screws.
under the driving of the driving device 20, when the horizontally moving sliding table 25 moves to each acquisition point position, such as position a, position b, position c, and position d, the levelness of the adapter plate 27 will change, the two-dimensional electronic level meter 29 will measure the change of the levelness in real time, and transmit the levelness to the computer as a digital signal, the computer feeds the digital signal back to the controller of the two-dimensional rotary leveling platform 26, and the controller controls X, Y the rotation of the motors in two directions, so that the levelness of the adapter plate 27 is within the precision range of the two-dimensional electronic level meter 29 at each data acquisition point.
the power generator stator core perpendicularity online monitoring method is further provided, referring to fig. 3, and the power generator stator core perpendicularity online monitoring device is used for monitoring in a power generator stator core forming process, and comprises the following steps:
Step s 1: adjusting the moving platform to enable the laser light spot emitted by the laser emitting unit to be emitted vertically upwards;
step s 2: horizontally moving the laser emitting unit to a predetermined position point to align each photoelectric position sensor, respectively;
step s 3: repeatedly executing step s2 to obtain a plurality of coordinate data values collected by each photoelectric position sensor;
step s 4: and calculating the perpendicularity error of the electronic iron core of the generator according to the plurality of coordinate data values acquired by each photoelectric position sensor.
according to the method for monitoring the perpendicularity of the stator core of the generator on line, before the step s1, in the hot press forming process, horizontal leading-out rods are respectively led out from different heights of the stator core of the generator, a photoelectric position sensor is arranged at the free end of each horizontal leading-out rod, the receiving surface of each photoelectric position sensor faces downwards to the moving platform, and the linear distance from each photoelectric position sensor to the stator core is unequal.
Before perpendicularity error monitoring, the working platform and the two-dimensional rotary leveling platform are respectively adjusted, so that the laser emitting unit emits vertically upwards. The radial horizontal moving guide rail drives the laser emission unit to move repeatedly from inside to outside or from outside to inside, and data are repeatedly and uninterruptedly acquired at each position until the stator core is molded.
compared with a manual detection mode, the automatic perpendicularity error online monitoring system has the advantages of high stability, high precision and high efficiency, saves labor cost and is beneficial to improving the management and control of iron core manufacturing quality.
in the method for online monitoring of the perpendicularity of the generator stator core, the step s1 specifically comprises the following steps:
step s 11: moving the laser emitting unit to each preset position point, and adjusting the levelness of the laser emitting unit within a preset precision range at each preset position point;
Step s 12: judging whether the laser spot of the laser emitting unit at each predetermined position point is within the range of the central area of the photoelectric position sensor, if so, executing step s 2; if not, step s13 is performed separately;
Step s 13: the motion platform is adjusted and step s12 is repeated.
while the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a generator stator core straightness on-line monitoring device that hangs down which is arranged in generator stator core makes the straightness change monitoring that hangs down in the forming process, includes:
The laser emission unit is positioned on one side of a generator stator iron core and arranged on a motion platform, and the motion platform is used for adjusting the position and the emission direction of the laser emission unit;
the photoelectric position sensors are arranged at different heights along the height direction of the generator stator core, the receiving surfaces of the photoelectric position sensors face the moving platform downwards, the linear distance between each photoelectric position sensor and the stator core is unequal, and when the laser emission unit moves to different position points, the photoelectric position sensors receive laser signals emitted by the laser emission unit to generate corresponding position coordinate information;
And the processing device is connected with the signal output ends of the photoelectric position sensors and is used for obtaining the verticality data of the stator core of the generator according to the position coordinate information.
2. the device for monitoring the perpendicularity of the generator stator core according to claim 1, wherein the generator stator core is provided with an outer wall, and each of the plurality of photoelectric position sensors is respectively adsorbed on the outer wall through a magnetic type mounting bracket.
3. the device for on-line monitoring of the perpendicularity of the generator stator core according to claim 1, wherein a positioning rib groove is formed in the back of the generator stator core, a plurality of horizontal leading-out rods are led out from different positions of the positioning rib groove and distributed along different heights of the generator stator core, and each horizontal leading-out rod is provided with one photoelectric position sensor.
4. the generator stator core perpendicularity online monitoring device according to claim 1, wherein the moving platform comprises:
the working platform is used for providing a horizontal table top;
The horizontal moving guide rail is arranged on the working platform;
the horizontal moving sliding table is arranged on the horizontal moving guide rail, takes the horizontal moving guide rail as direction guide and moves horizontally under the drive of a drive device;
The adapter plate is installed on the horizontal moving sliding table and used for installing the laser emission unit, and the adapter plate is close to the generator stator core or far away from the generator stator core under the driving of the horizontal moving sliding table.
5. the generator stator core perpendicularity online monitoring device according to claim 1, wherein the moving platform comprises:
the working platform is used for providing a horizontal table top;
the horizontal moving guide rail is arranged on the working platform;
the horizontal moving sliding table is arranged on the horizontal moving guide rail, takes the horizontal moving guide rail as direction guide and moves horizontally under the drive of a drive device;
the two-dimensional rotary leveling platform is fixedly arranged on the horizontal moving sliding table and rotates along the X direction and/or the Y direction under the control of a controller;
The adapter plate is arranged on the two-dimensional rotary leveling platform and is adjusted to be within a set levelness range under the action of the two-dimensional rotary leveling platform;
The laser emission unit mounting seat is rigidly connected with the adapter plate, and the laser emission unit is mounted on the laser emission unit mounting seat.
6. the generator stator core verticality on-line monitoring device according to claim 4, wherein at least four leveling pads are arranged at the bottom of the working platform and used for adjusting the levelness of the working platform.
7. the device for monitoring the verticality of the stator core of the generator as claimed in claim 5, further comprising a two-dimensional electronic level gauge fixedly arranged on the adapter plate and used for measuring the levelness of the adapter plate and sending the levelness to the controller.
8. An on-line monitoring method for the perpendicularity of a generator stator core is characterized by being used for the on-line monitoring device for the perpendicularity of the generator stator core according to claim 1, monitoring is carried out in the forming process of the generator stator core, and the method comprises the following steps:
Step s 1: adjusting the moving platform to enable the laser light spot emitted by the laser emitting unit to be emitted vertically upwards;
Step s 2: horizontally moving the laser emitting unit to a predetermined position point to align each of the photoelectric position sensors, respectively;
step s 3: repeating said step s2 to obtain a plurality of coordinate data values collected by each of said photoelectric position sensors;
Step s 4: and calculating the perpendicularity error of the electronic iron core of the generator according to the coordinate data values acquired by each photoelectric position sensor.
9. the method for on-line monitoring of the perpendicularity of the generator stator core according to claim 8, wherein before the step s1, horizontal extraction rods are respectively extracted from different heights of the generator stator core in a hot press forming process, a photoelectric position sensor is arranged at a free end of each horizontal extraction rod, a receiving surface of each photoelectric position sensor faces downwards to the moving platform, and the linear distance from each photoelectric position sensor to the stator core is different.
10. the method for on-line monitoring of the perpendicularity of the generator stator core according to claim 8, wherein the step s1 includes the following specific steps:
step s 11: moving the laser emitting unit to each preset position point, and adjusting the levelness of the laser emitting unit in a preset precision range at each preset position point;
Step s 12: judging whether the laser spot of the laser emitting unit is within the range of the central area of the photoelectric position sensor at each predetermined position point, if so, executing step s 2; if not, step s13 is performed separately;
Step s 13: adjusting the motion platform and repeating step s 12.
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| CN201610143405.XA CN105698711B (en) | 2016-03-14 | 2016-03-14 | generator stator core perpendicularity online monitoring device and method |
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| CN106225683B (en) * | 2016-08-22 | 2019-02-22 | 国家电网公司 | Vertical hydrogenerator stator silicon steel plate radial displacement detection method |
| CN106524948B (en) * | 2016-12-27 | 2018-06-19 | 重庆大学 | UO2Pellet system for detecting verticality and its detection method |
| DE102017200828B4 (en) * | 2017-01-19 | 2018-09-20 | Hochschule Heilbronn | Method and arrangement for determining the armature position of an electromagnet |
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| CN101298982A (en) * | 2008-07-02 | 2008-11-05 | 瑞安市瑞光光电仪器有限公司 | Method and instrument for calibrating rotary shaft coaxiality |
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