CN210736017U

CN210736017U - Hydroelectric set rotor hoist and mount auxiliary assembly

Info

Publication number: CN210736017U
Application number: CN201921779643.5U
Authority: CN
Inventors: 任婕
Original assignee: Lanzhou University of Technology
Current assignee: Lanzhou University of Technology
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-06-12
Anticipated expiration: 2029-10-22

Abstract

The utility model provides a hydroelectric set rotor hoist and mount auxiliary assembly, including rotor and stator, the stator is placed on the plane, lifts up the rotor with the hoist and prepares the installation, is equipped with revolving stage, laser instrument and annular reflector panel on the rotor, and the laser instrument is fixed on the rotation end of revolving stage, and the laser irradiation of laser instrument outgoing is at annular reflector panel, and the laser reflection back shines and is on a parallel with the rotor pivot, and the revolving stage during operation drives the laser instrument and rotates; in a certain integration time, laser emitted by the laser forms a plane, the laser reflected by the annular reflector forms a hollow cylindrical surface, the hollow cylindrical surface irradiates on the plane where the stator or the stator is placed to form an annular laser line with the same shape as the annular reflector, and the annular laser line marks the position of the annular reflector, namely equivalently marks the position of the rotor, so that the position of the rotor is judged, and the rotor is conveniently and accurately hoisted into the stator.

Description

Hydroelectric set rotor hoist and mount auxiliary assembly

Technical Field

The utility model relates to a water conservancy and hydropower technical field, concretely relates to hydroelectric set rotor hoist and mount auxiliary assembly.

Background

The rotor of the large-scale hydraulic generator is generally large in size and extremely heavy in weight, the rotor needs to be arranged in the stator when the hydraulic generator is prepared, the gap between the stator and the rotor is generally 20-30 mm, and the diameter of the large-scale hydraulic generator is generally more than ten meters. The rotor is installed in a hoisting mode, and due to the fact that the rotor is large in size and heavy in weight, the rotor and the stator are easily collided due to the fact that errors occur in the hoisting process, and the rotor and the stator are likely to be damaged.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a hydroelectric set rotor hoist and mount auxiliary assembly can clearly show the position of rotor directly perceivedly when using, can assist constructor accurately with the rotor hang pack into the stator.

A lifting auxiliary device for a rotor of a hydroelectric generating set comprises a rotor and a stator, wherein a rotary table, a laser and an annular reflecting plate are arranged on the upper surface of the rotor; the rotary table comprises a rotating end, a rotating shaft of the rotating end is overlapped with a rotating shaft of the rotor, the laser is fixed on the rotating end, and the light emitting direction of the laser is perpendicular to the rotating shaft of the rotating end; the annular reflecting plate reflects laser emitted by the laser, and the reflected laser is parallel to the rotating shaft of the rotor and irradiates downwards from the side position of the rotor.

Furthermore, the distance between the laser reflected by the annular light reflecting plate at any moment and the rotor rotating shaft is equal.

Furthermore, the motor rotor further comprises a base used for supporting and fixing the annular light reflecting plate, the base is fixed with the upper surface of the rotor, and the annular light reflecting plate is fixed on the base.

Furthermore, the stator comprises a plurality of markers which are distributed on the inner wall of the stator.

Furthermore, the stator is provided with a through hole for detaching the marker, and the marker penetrates through the through hole.

Further, the marker is a graduated scale.

Further, a plurality of lasers are included and are fixed to the rotating end.

Furthermore, a plurality of lasers are uniformly distributed and fixed on the rotating end.

The beneficial effects of the utility model are embodied in: the utility model comprises a rotor and a stator, wherein the stator is arranged on a plane, the rotor is lifted by a crane to prepare for installation, the rotor is provided with a rotary table, a laser and an annular reflecting plate, the laser is fixed on the rotating end of the rotary table, the laser emitted by the laser irradiates on the annular reflecting plate, the laser reflects and irradiates downwards and is parallel to the rotating shaft of the rotor, and the rotary table drives the laser to rotate during working; in a certain integration time, laser emitted by a laser forms a plane, the laser reflected by the annular reflector forms a hollow cylindrical surface, the hollow cylindrical surface irradiates on the plane where the stator or the stator is placed to form an annular laser line with the same shape as the annular reflector, the annular laser line marks the position of the annular reflector, the annular reflector is fixed on the rotor, the annular laser line equivalently marks the position of the rotor, the position of the rotor relative to the vertical direction of the stator can be accurately known according to the annular laser line only by setting the size of the annular reflector and the position fixed on the rotor in advance, then the crane is adjusted according to the annular laser line to enable the rotor to be accurately positioned above a rotor accommodating hole in the stator, and then the rotor is placed to enable the rotor to be accurately installed in the stator.

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 embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a cross-sectional view of an embodiment of the present invention;

fig. 2 is a partial structure diagram of the present invention.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

A lifting auxiliary device for a rotor 6 of a hydroelectric generating set is shown in figure 1, which is a cross section in a vertical direction and comprises a rotor 6 and a stator 7, wherein a rotary table 2, a laser 3 and an annular light reflecting plate 5 are arranged on the upper surface of the rotor 6; the rotary table 2 comprises a rotating end, a rotating shaft of the rotating end is overlapped with a rotating shaft of the rotor 6, the laser 3 is fixed on the rotating end, and the light emitting direction of the laser 3 is perpendicular to the rotating shaft of the rotating end; the annular reflecting plate 5 reflects the laser emitted by the laser 3, that is, when the laser 3 rotates to any position, the annular reflecting plate 5 is located in the optical path of the laser 3, and the reflected laser is parallel to the rotating shaft of the rotor 6 and irradiates downwards from the side position of the rotor 6.

When the laser linear guide rail is used, the crane 1 lifts the rotor 6 to a position right above the stator 7 to be installed, the rotary table 2 drives the laser 3 to rotate, the rotary table 2 can adopt devices such as an electric rotary table 2, in a certain integration time, laser emitted by the laser 3 forms a plane, laser reflected by the annular reflecting plate 5 forms a hollow cylindrical surface, and the hollow cylindrical surface irradiates on the stator 7 or a plane where the stator 7 is placed to form an annular laser line with the same shape as the annular reflecting plate 5. Since the laser light reflected by the annular reflecting plate 5 is parallel to the rotation axis of the rotor 6, the annular laser line marks the vertical position of the annular reflecting plate 5, and the annular reflecting plate 5 is fixed on the rotor 6, the annular laser line equivalently marks the position of the rotor 6. The vertical direction of the rotor 6 relative to the stator 7 can be accurately known according to the annular laser line only by setting the size of the annular light reflecting plate 5 and the position fixed on the rotor 6 in advance. This use method may be, for example: when the rotating surface of the rotor 6 is circular, the annular reflecting plate 5 is set to be annular, the diameter of the annular reflecting plate 5 is slightly larger than that of the rotor 6, the position of the laser 3 fixed on the rotating end is adjusted so as to adjust the position of a reflecting point of laser emitted by the laser 3 on the annular reflecting plate 5, the diameter of the hollow cylindrical surface is larger than that of the rotor 6 to 10mm, the diameter of the common hollow cylindrical surface with the size is smaller than that of a mounting hole of the rotor 6 in the stator 7, the position of the laser 3 can be adjusted according to actual conditions so as to adjust the size of the hollow cylindrical surface, the crane 1 is controlled to adjust the position of the rotor 6 so that annular laser lines do not irradiate on the upper surface of the stator 7 any more, the rotor 6 is put down at the moment and does not collide with the stator 7, and the rotor 6 is slowly put down. Specifically, because need be fixed annular reflector panel 5 and rotor 6, generally need devices such as connecting rod to fix both, the preferred detachable fixing device that adopts dismantles annular reflector panel 5 after the hoist and mount is ended, and these devices are possible to shelter from the light path, but only can shelter from a very little partly radian, can not influence holistic annular laser line.

In order to further accurately judge the position of the rotor 6, the distance between the laser reflected by the annular light reflecting plate 5 at any moment and the rotating shaft of the rotor 6 is equal, that is, the position of the rotor 6 can be accurately judged by the laser at the side of the periphery of the rotor 6, for example, when the top view of the rotor 6 is a perfect circle, the annular laser line formed by the hollow cylindrical surface of the laser is also a perfect circle, and compared with other shapes, the position of the rotor 6 can be more conveniently judged by the perfect circle.

In some embodiments, as shown in fig. 1 and 2, the reflector further comprises a base 4 for supporting and fixing the annular reflector 5, the base 4 is fixed to the upper surface of the rotor 6, preferably, the two are fixed to each other by a detachable fixing manner, and the annular reflector 5 is fixed to the base 4, so that the annular reflector 5 is more conveniently and stably fixed.

In specific implementation, a rotating shaft at the rotating end of the turntable 2 is coincided with a rotating shaft of the rotor 6, the lower surface of the base 4 is perpendicular to the rotating shaft of the rotor 6, the section, parallel to the rotating shaft of the rotor 6, of the annular reflecting plate 5 is 45 degrees with the lower surface of the base 4, and therefore the laser reflected by the annular reflecting plate 5 is parallel to the rotating shaft of the rotor 6, and therefore the annular laser line can be used for judging the position of the rotor 6 more conveniently.

Preferably, the rotor position detection device further comprises a plurality of markers, the markers are distributed on the inner wall of the stator 7, and when the hollow laser cylindrical surface is irradiated on the markers, the orientation of the rotor 6 can be judged more conveniently through laser irradiation rays on the markers. Preferably, the marker is a graduated scale, when the laser hollow cylindrical surface irradiates on the marker, the distance between the reflected laser and the rotating shaft of the rotor 6 (namely the vertical distance between the reflection point of the annular reflection plate 5 and the rotating shaft of the rotor 6) is measured and adjusted in advance, a constructor can accurately know the exact direction of the rotor 6 at the moment by observing the irradiation line of the laser hollow cylindrical surface on each marker, if the direction is not accurate, the crane 1 is controlled to move the rotor 6 according to the reading of the marker, so that the scale irradiated by the laser irradiation line on each marker reaches the required value (for example, the distance between the any position of the annular laser line and the inner wall of the stator 7 is equal, namely the annular laser line and the rotor 6 are completely centered in the stator 7 mounting hole), and then the rotor 6 is placed into the stator 7, so that the precise hoisting can be completed.

More conveniently, a through hole for detaching the marker is formed in the stator 7, the marker penetrates through the through hole, and after the position of the rotor 6 is accurately adjusted through the marker, the marker is detached, so that the subsequent work of the rotor 6 cannot be influenced. The existing holes of the stator 7 can be used as through holes of the marker, and the marker with a proper size can be selected; it is also possible to make a very small hole in the stator 7 as a through hole and select a very fine marker.

Preferably, a plurality of lasers 3 may be included, a plurality of lasers 3 being fixed to said rotating end, the plurality of lasers 3 being capable of forming a complete hollow cylinder and a complete annular laser line within a shorter integration time when the turntable 2 is in operation. The lasers 3 can be uniformly distributed and fixed on the rotating end, and because the included angle between the laser emitted by each laser 3 is equal, the integration time can be further shortened; if the included angle is not equal, the integral actual integration time is determined by the integration time between the two laser beams with the largest included angle.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. The utility model provides a hydroelectric set rotor hoist and mount auxiliary assembly, includes rotor and stator, its characterized in that: the upper surface of the rotor is provided with a rotary table, a laser and an annular light reflecting plate; the rotary table comprises a rotating end, a rotating shaft of the rotating end is overlapped with a rotating shaft of the rotor, the laser is fixed on the rotating end, and the light emitting direction of the laser is perpendicular to the rotating shaft of the rotating end; the annular reflecting plate reflects laser emitted by the laser, and the reflected laser is parallel to the rotating shaft of the rotor and irradiates downwards from the side position of the rotor.

2. The hydraulic generator set rotor hoisting auxiliary device of claim 1, characterized in that: the distances between the laser reflected by the annular reflecting plate at any moment and the rotor rotating shaft are equal.

3. The hydraulic generator set rotor hoisting auxiliary device of claim 2, characterized in that: the annular light reflecting plate is fixed on the base.

4. The hydraulic generator set rotor hoisting auxiliary device of claim 3, characterized in that: still include a plurality of markers, the marker distributes and sets up on the stator inner wall.

5. The hydraulic generator set rotor hoisting auxiliary device of claim 4, characterized in that: the stator is provided with a through hole for detaching the marker, and the marker penetrates through the through hole.

6. The hydraulic generator set rotor hoisting auxiliary device of claim 5, characterized in that: the marker is a graduated scale.

7. The hydraulic generator set rotor hoisting auxiliary device of claim 6, characterized in that: the laser device comprises a plurality of lasers, and the lasers are fixed on the rotating end.

8. The hydraulic generator set rotor hoisting auxiliary device of claim 7, characterized in that: the lasers are uniformly distributed and fixed on the rotating end.