CN112082515A - Device and method for measuring axial eccentricity and temperature of generator - Google Patents

Device and method for measuring axial eccentricity and temperature of generator Download PDF

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Publication number
CN112082515A
CN112082515A CN202010888636.XA CN202010888636A CN112082515A CN 112082515 A CN112082515 A CN 112082515A CN 202010888636 A CN202010888636 A CN 202010888636A CN 112082515 A CN112082515 A CN 112082515A
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temperature
generator
measuring sensor
measuring
guide rail
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CN202010888636.XA
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何玉灵
徐明星
王烁
张文
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North China Electric Power University
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North China Electric Power University
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical techniques
    • G01B11/26Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
    • G01B11/27Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00Thermometers specially adapted for specific purposes
    • G01K13/04Thermometers specially adapted for specific purposes for measuring temperature of moving solid bodies
    • G01K13/08Thermometers specially adapted for specific purposes for measuring temperature of moving solid bodies in rotary movement

Abstract

The invention discloses a device and a method for measuring axial eccentricity and temperature of a generator, wherein the device comprises the following steps: the device comprises a signal processor, an annular guide rail bottom plate, a distance measuring sensor, a temperature measuring sensor and a transfer block; the distance measuring sensor and the temperature measuring sensor are arranged on the transfer block and are connected with the signal processor; the transfer block is movably arranged on the annular guide rail base plate; the annular guide rail bottom plate is provided with annular guide rails with various radiuses, and the annular guide rails with different radiuses are all radially communicated with each other. The device and the method for measuring the axial eccentricity and the temperature of the generator are reliable and easy to realize, can measure the axial eccentricity and the temperature of the generator in different degrees at the same time, make up for the current blank, and provide new possibility for fault monitoring and research of the generator.

Description

Device and method for measuring axial eccentricity and temperature of generator
Technical Field
The invention relates to the technical field of generator experimental devices, in particular to a device and a method for measuring axial eccentricity and temperature of a generator.
Background
Due to manufacturing, assembling or operation reasons, air gaps between the stator and the rotor of the generator can cause a certain degree of non-uniformity, so that the air gap on one side is larger, and the air gap on the other side is smaller, and the phenomenon is called air gap eccentricity. Such unevenness of the air gap may occur not only in the radial direction but also in the axial direction. For example, the hydro-generator rotor may generate a certain axial displacement under the long-term impact action of a water head, so that an axial air gap between the stator and the rotor is small at one end and large at the other end, and the condition of axial static eccentricity of the air gap is formed. At present, the air gap eccentricity measurement method of the generator is mostly focused on the air gap radial eccentricity, but the air gap axial eccentricity and three-dimensional air gap mixed eccentricity measurement method is rarely mentioned, however, the air gap axial eccentricity is real in the production and operation of the generator, so that the independent air gap radial eccentricity measurement is incomplete, and the monitoring on the generator axial eccentricity is also important.
In addition, in recent years, as the capacity of a single generator continues to increase, the temperature inside the generator also becomes higher, and monitoring of the temperature state inside the generator is also becoming more important. The continuous or abnormal increase of the internal temperature of the generator can cause the working condition of the generator to be deteriorated, in particular to aggravate the damage of insulation abrasion and insulation damage of the winding. At present, few devices are used for measuring the axial eccentricity of the generator and simultaneously measuring the temperature of the generator.
Therefore, how to realize the simultaneous measurement of the axial eccentricity and the temperature of the generator with different degrees is a problem which needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In view of this, the invention provides a device and a method for measuring the axial eccentricity and the temperature of the generator, the device is reliable and easy to implement, the axial eccentricity and the temperature of the generator with different degrees can be measured at the same time, the current blank is made up, and a new possibility is provided for fault monitoring and research of the generator.
In order to achieve the purpose, the invention adopts the following technical scheme:
an apparatus for measuring axial eccentricity and temperature of a generator, comprising: the device comprises a signal processor, an annular guide rail bottom plate, a distance measuring sensor, a temperature measuring sensor and a transfer block;
the distance measuring sensor and the temperature measuring sensor are arranged on the transfer block and are connected with the signal processor;
the transfer block is movably arranged on the annular guide rail base plate; the annular guide rail bottom plate is provided with annular guide rails with various radiuses, and the annular guide rails with different radiuses are all radially communicated with each other.
Preferably, the distance measuring sensor and the temperature measuring sensor are arranged at two ends of the transfer block.
Preferably, the transfer block has a plurality.
Preferably, the transfer block is mounted on the annular guide rail bottom plate through a butterfly nut and a square-head fixing bolt.
Preferably, the annular guide rail bottom plate is fixed on the generator through annular guide rail bottom plate supporting feet and fixing bolts.
Preferably, the ranging sensor includes: the laser ranging sensor is fixed on the transfer block through two hexagon socket head cap screws.
Preferably, the distance measuring sensor and the temperature measuring sensor are both connected with the signal processor through signal transmission wires.
Preferably, the method further comprises the following steps: a display module; the display module is connected with the signal processor.
A method for measuring axial eccentricity and temperature of a generator, which is suitable for the device for measuring axial eccentricity and temperature of a generator, and comprises the following steps:
air gap axial static eccentricity measurement methods of different degrees:
selecting a reference plane on the end face of the side edge of the generator, moving the switching block to enable the distance measuring sensor to be located on a first ring of the annular guide rail base plate, and selecting a plurality of positions to measure the reference plane;
moving the switching block again to enable the distance measuring sensor to be located on a second ring of the annular guide rail bottom plate, and selecting a plurality of positions to measure a measuring plane; and the first and second ring radii are different;
the signal processor processes the measured signals;
method for temperature measurement of different components of a generator:
moving the transfer block to enable the temperature measuring sensors to move simultaneously;
aligning a temperature measuring sensor to a generator component to be measured;
the signal processor processes the measured temperature signal.
Preferably, the method further comprises the following steps: and outputting and displaying the result processed by the signal processor.
According to the technical scheme, compared with the prior art, the invention discloses a device and a method for measuring the axial eccentricity and the temperature of a generator, wherein a distance measuring sensor and a temperature measuring sensor are arranged on a switching block, the switching block is movably arranged on a bottom plate of an annular guide rail, when the axial static eccentricity of air gaps with different degrees is measured, the switching block is moved to drive the distance measuring sensor to move to circular guide rails with different radiuses, and a plurality of positions are respectively arranged on the circular guide rails with different radiuses to respectively measure a reference plane and a measuring plane and are processed by a signal processor. When measuring the temperature, the temperature measuring sensor is aligned with the part of the generator to be measured to measure.
The technical scheme and the device provided by the invention are simple and reliable, are easy to realize, can simultaneously measure the axial eccentricity and the temperature of the generator in different degrees, make up for the current blank, and provide new possibility for fault monitoring and research of the generator.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an apparatus for measuring axial eccentricity and temperature of a generator according to the present invention;
FIG. 2 is a schematic diagram illustrating the principle of the triangular reflection method for laser ranging according to the present invention;
FIG. 3 is a schematic structural diagram of a bottom plate of the circular guide rail provided by the invention;
FIG. 4 is a schematic diagram of a structure of an adapter block according to the present invention;
FIG. 5 is a schematic structural view of a fixing manner of the adapter block according to the present invention;
FIG. 6 is a schematic structural diagram of a laser ranging sensor according to the present invention;
fig. 7 is a schematic structural diagram of an infrared temperature measurement sensor provided by the present invention.
In FIGS. 1 to 7:
1. a signal processor, 2, a signal receiving connector, 3, a circular guide rail bottom plate, 4, a laser ranging sensor, 5, an infrared temperature measuring sensor, 6, a signal transmission lead, 7, a computer, 8, a reference plane, 9, a measuring plane, 10, a switching block, 11, a butterfly nut, 12, a square head fixing bolt, 13, the device comprises a fixing bolt, 14 parts of an inner hexagonal fixing screw, 3-1 parts of an annular guide rail bottom plate supporting leg, 3-2 parts of a guide rail, 4-1 parts of a laser emitter, 4-2 parts of a laser beam, 4-3 parts of a condensing lens, 4-4 parts of a linear CCD detector, 4-5 parts of an imaging lens, 5-1 parts of an external thread, 10-1 parts of an infrared temperature measuring sensor mounting threaded hole, 10-2 parts of a bolt-butterfly nut fixing position, 10-3 parts of a laser distance measuring sensor mounting position.
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.
Referring to the attached drawing 1, the embodiment of the invention discloses a device for measuring the axial eccentricity and the temperature of a generator, which comprises: the device comprises a signal processor 1, an annular guide rail bottom plate 3, a distance measuring sensor 4, a temperature measuring sensor 5 and a switching block 10;
the distance measuring sensor 4 and the temperature measuring sensor 5 are arranged on the transfer block 10, and the distance measuring sensor 4 and the temperature measuring sensor 5 are both connected with the signal processor 1;
wherein, the switching block 10 can be movably arranged on the annular guide rail bottom plate 3; the annular guide rail bottom plate 3 is provided with a plurality of annular guide rails with different radiuses, and the annular guide rails with different radiuses are all radially communicated with each other.
The distance measuring sensor 4 and the temperature measuring sensor 5 are installed on the switching block 10, the switching block 10 is movably installed on the annular guide rail bottom plate 3, when air gap axial static eccentricity of different degrees is measured, the switching block 10 is moved to drive the distance measuring sensor 4 to move to the circular guide rails of different radiuses, a plurality of positions are arranged on the circular guide rails of different radiuses respectively to measure a reference plane and a measuring plane respectively, and the measurement is carried out through the signal processor 1. When measuring the temperature, the temperature measuring sensor 5 is aligned with the component of the generator to be measured to measure.
In order to further optimize the technical scheme, the distance measuring sensor 4 and the temperature measuring sensor 5 are arranged at two ends of the transfer block 10. The adapter block 10 has a plurality of, preferably 4 adapter blocks for carrying out the axial static eccentricity measurement and 1 or 2 adapter blocks for carrying out the temperature measurement. The transfer block 10 is mounted on the ring-shaped guide rail bottom plate 3 through a butterfly nut 11 and a square head fixing bolt 12. The annular guide rail bottom plate 3 is fixed on the generator through annular guide rail bottom plate support legs 3-1 and fixing bolts 13.
In order to further optimize the above technical solution, the distance measuring sensor 4 includes: the laser ranging sensor is fixed on the adapter block 10 through two hexagon socket head cap screws 14. The distance measuring sensor 4 and the temperature measuring sensor 5 are both connected with the signal processor 1 through signal transmission wires 6.
In order to further optimize the above technical solution, the above apparatus for measuring axial eccentricity and temperature of a generator further includes: a display module; the display module is connected with the signal processor 1. Preferably, the display module comprises a computer 7.
In addition, the embodiment of the invention also discloses a method for measuring the axial eccentricity and the temperature of the generator, which is suitable for the device for measuring the axial eccentricity and the temperature of the generator, and the method comprises the following steps:
a. air gap axial static eccentricity measuring method with different degrees
Selecting a reference plane on the end face of the side edge of the generator, moving the switching block 10 to enable the distance measuring sensor 4 to be positioned on a first ring of the annular guide rail bottom plate 3, and selecting a plurality of positions to measure the reference plane;
moving the switching block 10 again to enable the distance measuring sensor 4 to be located on a second ring of the annular guide rail bottom plate 3, and selecting a plurality of positions to measure a measuring plane; and the first and second ring radii are different;
the signal processor 1 processes the measured signal;
b. method for measuring temperature of different parts of generator
The transfer block 10 is moved to enable the temperature measuring sensors 5 to move simultaneously;
aligning the temperature measuring sensor 5 to a generator component to be measured;
the signal processor 1 processes the measured temperature signal.
In order to further optimize the above technical solution, the method further comprises: the result processed by the signal processor 1 is output and displayed.
The technical solution of the present invention is further described with reference to the following specific embodiments.
The device for measuring the axial eccentricity and the temperature of the generator mainly comprises a signal processor 1, a ring-shaped guide rail bottom plate 3, a laser ranging sensor, an infrared temperature measuring sensor, a signal transmission line 6 and a computer 7, wherein, the laser distance measuring sensor and the infrared temperature measuring sensor are fixed on the annular guide rail bottom plate 3 through the adapter block 10, the annular guide rail bottom plate 3 is fixed on the shell of the generator through the annular guide rail bottom plate support legs 3-1 and the fixing bolts 13, wherein the annular guide rail bottom plate 3 is arranged in parallel with the end face of the generator shell with a certain distance, the switching block 10 is fixed with the annular guide rail bottom plate 3 through a square head fixing bolt 12 and a butterfly nut 11, the square-head fixing bolt 12 and the butterfly nut 11 are arranged at the bolt-butterfly nut fixing position 10-2, and the square-head fixing bolt 12 is arranged in the guide rail 3-2 of the annular guide rail bottom plate 3; the laser distance measuring sensor is fixed with the switching block 10 through the inner hexagonal fixing screw 4, signals collected by the laser distance measuring sensor are input into the signal processor 1, and finally the axial relative offset of the rotor is output through the computer 7; wherein, the laser ranging sensor is arranged at the position 10-3 of the laser ranging sensor.
The infrared temperature measuring sensor is fixedly matched with the threaded hole 10-1 in a mounting mode through the infrared temperature measuring sensor, the infrared temperature measuring sensor is aligned to a component to be measured of the generator, the switching block 10, the infrared temperature measuring sensor and the laser distance measuring sensor can be moved to any position of the annular guide rail bottom plate 3 by changing the tightness degree of the square head fixing bolt 12 and the butterfly nut 11, the temperature of different positions of the same component can be measured at the same time, and the temperature of different components can also be measured at the same time. The signal collected by the infrared temperature measuring sensor is transmitted to the signal processor 1 through the signal transmission lead 6, and the temperature value is output through the computer 7.
Wherein, each sensor is connected with the signal receiving connector 2 on the signal processor 1 through the signal transmission wire 6 to realize the transmission of signals.
The scheme provided by the invention is reliable and easy to realize, can simultaneously measure the axial eccentricity and the temperature of the generator in different degrees, makes up the current blank, and provides new possibility for monitoring and researching the generator fault.
The problems to be solved by the present invention include: firstly, the air gap axial static eccentricity measurement of different degrees is realized through which way; secondly, how to realize the temperature measurement of different parts of the generator; and thirdly, how to simultaneously measure the axial static eccentricity of the air gap and the temperature of the generator component and measure the temperatures of different components of the generator at the same moment.
In view of the first problem, referring to fig. 1, 2, 3, 4, 5 and 6, the present invention adopts the following method to achieve air gap axial static eccentricity measurement of different degrees:
the circular guide rail bottom plate 3 and the generator shell end face are placed in parallel and have a certain distance, the circular guide rail bottom plate is connected with the generator shell in a matched mode through circular guide rail bottom plate supporting legs 3-1 and is fixed through fixing bolts 13, a switching block 10 is fixed on the circular guide rail bottom plate 3 through square fixing bolts 12 and butterfly nuts 11, a laser ranging sensor is fixed with the switching block 10 into a whole through two inner hexagonal fixing screws 14, in the whole measuring and switching block 10 moving process, the laser ranging sensor is always fixedly matched with the switching block 10, and the laser ranging sensor does not move relative to the switching block 10.
During measurement, firstly the butterfly nut 11 is loosened, the transfer block 10 and the laser ranging sensor are moved, a reference plane is selected on the end face of the side edge of the generator (generally, the end face of the shell of the generator is selected), then the transfer block 10 is moved to ensure that the laser ranging sensor is positioned on a C ring of a bottom plate of the annular guide rail (see figure 1), and four positions of + x, -x, + y and-y are selected to carry out measurement on the reference plane. Then, the transfer block 10 is moved to ensure that the laser ranging sensor is positioned on the ring A of the annular guide rail bottom plate, and A, A2, A4 and A6 four positions are selected (in order to make the result more accurate, the laser ranging sensor can be arranged at each node of the ring A) to ensure the accuracy of measurement; it should also be ensured that the laser distance measuring sensor is just over against the eccentric shaftMeasuring plane (Generator rotor end)And the laser ranging sensor is prevented from inclining to the end face of the rotor. The laser ranging method is called as a laser triangular reflection method, the measuring precision changes along with the change of the measuring range, and the measuring range is larger, and the precision is lower.
Principle of laser triangular reflection method: the laser transmitter 4-1 is focused by a condenser lens 4-3 to a reference plane 8 (generator housing end face). Reflected light is collected by an imaging lens 4-5, and a laser beam 4-2 is projected onto a linear CCD detector 4-4; when the measured surface is changed from a reference plane 8 (the end face of the generator shell) to a measuring plane 9 (the end face of the generator rotor), the distance between the reference plane and the measuring plane is x, the distances between the reference plane and the measuring plane and the laser emitter 4-1 are different, the position and the angle of a light spot projected on a linear CCD detector by a laser beam of an imaging lens 4-5 are changed, signals with the changed positions are transmitted to a signal processor 1, are processed by an analog circuit and a digital circuit, are analyzed by a microprocessor, and the axial relative offset distance of the rotor can be read by a computer 7.
The calculation principle is as follows: if the displacement of the light spot on the linear CCD detector 4-4 is x', the distance x between the reference plane (the end face of the generator housing) and the measuring plane (the end face of the generator rotor) can be obtained by using the proportional relation between the sides of the similar triangle according to the following formula:
Figure BDA0002656269390000071
wherein α is a distance from an intersection of the laser beam axis and the reception beam axis to the front principal surface of the reception lens; b is the distance from the rear main surface of the receiving lens to the central point of the linear CCD detector; theta1Is the included angle between the optical axis of the laser beam and the optical axis of the receiving lens; theta2The included angle between the linear CCD detector and the beam axis of the receiving lens is shown, so that the method comprises the following specific steps when the axial static eccentricity of the air gap is measured:
1) loosening a butterfly nut 11 for fixing the transfer block 10 and the annular guide rail bottom plate 3, sliding the transfer block 10 and the laser ranging sensors to a C ring of the annular guide rail bottom plate 3, selecting four positions of + x, -x, + y and y for measurement, facing the four laser ranging sensors to the end face of the generator shell, connecting the laser ranging sensors with a signal transmission lead 6 to a signal processor 1, connecting the signal processor 1 with a computer 7, and recording the position of a light beam at the moment on a linear CCD detector.
2) The movable switching block 10 ensures that the laser ranging sensor is positioned on the A ring of the annular guide rail bottom plate 3 to select A, A2, A4 and A6 four positions for measurement.
3) And reading and analyzing the acquired signals by using a signal processor and outputting the signals by using a computer to finally obtain a result.
To address the second problem, referring to fig. 1, 2, 3, 4, 5 and 7, the present invention uses the following method to achieve temperature measurement of different components of the generator: the infrared temperature measurement sensor is fixedly matched with the switching block 10 and does not move relatively, the butterfly nut 11 is loosened to move the infrared temperature measurement sensor and the switching block 10 to the front side surface of a measured generator component, the placing position of the infrared temperature measurement sensor can be any position in the A, B, C ring as long as the temperature of the component can be measured, and the two measurements can be carried out without interference (the infrared temperature measurement sensors are placed at different positions of the same component for the accuracy of the measurement). The infrared temperature sensor 5 is then aligned with the generator component to be measured. Data collected by the infrared temperature measuring sensor 5 is input into the signal processor 1 by using the signal transmission lead 6 for processing, and the actual measurement result can be directly read out by the computer 7.
Therefore, the method comprises the following specific steps of setting the temperature measurement of different parts of the generator:
1) loosening a butterfly nut 11 for fixing the transfer block 10 and the annular guide rail bottom plate 3, and sliding the transfer block 10 and the infrared temperature measurement sensor 5 to the side face of the generator component;
2) the infrared temperature measuring sensor 5 is opposite to the generator part, and the infrared temperature measuring sensor 5 is connected with the signal processor 1 by a signal transmission lead 6.
3) The collected signals are read, analyzed and output by a computer by a signal processor 1, and finally, a result is obtained.
In view of the third problem, referring to fig. 1, 2, 3, 4, 5, 6 and 7, the present invention adopts the following methods to achieve simultaneous measurement of the air gap axial static eccentricity and the temperature of the generator components and measurement of the temperatures of different components of the generator at the same time:
in order to realize the axial static eccentricity and the diversity of the temperature measuring positions of the generator components, an annular guide rail is designed in the invention, the guide rail is communicated with the guide rail, and the transfer block 10 and the sensor can reach any position of the annular guide rail bottom plate 3 through the matching of the square head fixing bolt 12 and the butterfly nut 11.
When the axial static eccentricity and the temperature of the generator component are measured simultaneously, the annular guide rail base plate 3 is provided with laser ranging sensors at least at the positions of A, A2, A4 and A6 on the most A ring for measuring the axial deviation of the rotor; an infrared temperature sensor is arranged on the outer ring, and the position of the infrared temperature sensor is changed according to different positions of the generator component.
When the temperature of different parts of the generator is measured simultaneously, firstly, an infrared temperature measuring sensor is arranged at each part, and in order to enable the result to be more accurate, the infrared temperature measuring sensors are arranged at different positions of the same part to measure under the condition that the condition allows.
The technical scheme provided by the invention can realize the measurement of the air gap axial eccentricity of the generator in different degrees, the temperature measurement of different components, the simultaneous measurement of the air gap axial eccentricity and the temperature of the generator components and the measurement of the temperatures of the different components of the generator at the same time, can fill the defects of the air gap axial eccentricity fault and the temperature measurement of the generator components at present, lays a foundation for the subsequent experimental research, and is worthy of popularization.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. An apparatus for measuring axial eccentricity and temperature of a generator, comprising: the device comprises a signal processor (1), an annular guide rail bottom plate (3), a distance measuring sensor (4), a temperature measuring sensor (5) and a switching block (10);
the distance measuring sensor (4) and the temperature measuring sensor (5) are arranged on the transfer block (10), and the distance measuring sensor (4) and the temperature measuring sensor (5) are both connected with the signal processor (1);
wherein the transfer block (10) is movably mounted on the circular guide rail base plate (3); the annular guide rail bottom plate (3) is provided with annular guide rails with various radiuses, and the annular guide rails with different radiuses are all radially communicated with each other.
2. The device for measuring the axial eccentricity and temperature of the generator as claimed in claim 1, wherein the distance measuring sensor (4) and the temperature measuring sensor (5) are installed at both ends of the transfer block (10).
3. The device for measuring the axial eccentricity and the temperature of a generator according to claim 1, characterized in that the transfer block (10) is provided in plurality.
4. The device for measuring the axial eccentricity and the temperature of the generator as claimed in claim 1 or 3, wherein the transfer block (10) is mounted on the ring-shaped guide rail base plate (3) through a wing nut (11) and a square head fixing bolt (12).
5. The device for measuring the axial eccentricity and the temperature of the generator as claimed in claim 1, wherein the ring guide base plate (3) is fixed on the generator through ring guide base plate feet (3-1) and fixing bolts (13).
6. Device for measuring the axial eccentricity and the temperature of a generator according to claim 1, characterized in that said distance measuring sensor (4) comprises: the laser ranging sensor is fixed on the switching block (10) through two inner hexagonal fixing screws (14).
7. The device for measuring the axial eccentricity and the temperature of the generator as claimed in claim 1, wherein the distance measuring sensor (4) and the temperature measuring sensor (5) are connected with the signal processor (1) through signal transmission wires (6).
8. The apparatus for measuring axial eccentricity and temperature of a generator according to claim 1, further comprising: a display module;
the display module is connected with the signal processor (1).
9. A method for measuring the axial eccentricity and the temperature of a generator, which is applied to the device for measuring the axial eccentricity and the temperature of the generator according to any one of claims 1 to 8, and comprises the following steps:
air gap axial static eccentricity measurement methods of different degrees:
selecting a reference plane on the end face of the side edge of the generator, moving the transfer block (10) to enable the distance measuring sensor (4) to be located on a first ring of the annular guide rail base plate (3), and selecting a plurality of positions to measure the reference plane;
moving the switching block (10) again to enable the distance measuring sensor (4) to be located on a second ring of the annular guide rail bottom plate (3), and selecting a plurality of positions to measure a measuring plane; and the first and second ring radii are different;
the signal processor (1) processes the measured signals;
method for temperature measurement of different components of a generator:
the transfer block (10) is moved to enable the temperature measuring sensors (5) to move simultaneously;
aligning a temperature measuring sensor (5) to a generator component to be measured;
the signal processor (1) processes the measured temperature signal.
10. The method of claim 9, further comprising: and outputting and displaying the result processed by the signal processor (1).
CN202010888636.XA 2020-08-28 2020-08-28 Device and method for measuring axial eccentricity and temperature of generator Pending CN112082515A (en)

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CN114719746A (en) * 2022-03-04 2022-07-08 华南理工大学 Measuring method, device and medium of laser triangulation system

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CN105387834A (en) * 2015-12-30 2016-03-09 江苏阳明船舶装备制造技术有限公司 Closing pipe-based distance measurement equipment and measuring method
CN107966107A (en) * 2017-12-21 2018-04-27 大连大重风电技术服务有限公司 A kind of main shaft internally-arranged type wind-driven generator group wheel box axial displacement monitoring device and method
CN111380468A (en) * 2020-04-23 2020-07-07 贵州电网有限责任公司 Device and method for measuring rotor eccentricity and phase of steam turbine generator unit

Cited By (2)

* Cited by examiner, † Cited by third party
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CN113624125A (en) * 2021-08-19 2021-11-09 江苏科技大学 Semi-intelligent eccentricity detection system based on motor operation
CN114719746A (en) * 2022-03-04 2022-07-08 华南理工大学 Measuring method, device and medium of laser triangulation system

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