CN219531918U - Hydroelectric set generator rotor overhauls survey circle device - Google Patents
Hydroelectric set generator rotor overhauls survey circle device Download PDFInfo
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- CN219531918U CN219531918U CN202320581449.6U CN202320581449U CN219531918U CN 219531918 U CN219531918 U CN 219531918U CN 202320581449 U CN202320581449 U CN 202320581449U CN 219531918 U CN219531918 U CN 219531918U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The utility model discloses a hydroelectric generator rotor overhauling and circle measuring device which comprises a base, an upright post and a circle measuring assembly arranged on the upright post, wherein a coaxial adjusting mechanism for adjusting coaxiality between the base and the hydroelectric generator rotor is arranged on the base, the coaxial adjusting mechanism comprises a plurality of axial adjusting jackscrews arranged on the base along a vertical direction and a supporting plate extending out of an inner hole of the hydroelectric generator rotor, a plurality of radial adjusting jackscrews arranged along a horizontal direction are respectively arranged on the supporting plate, the lower end of each axial adjusting jackscrew is in contact with the hydroelectric generator rotor, and the outer side of each radial adjusting jackscrew is in contact with the inner wall of the inner hole of the hydroelectric generator rotor. Compared with the traditional rotor roundness measuring tool, the rotor levelness is not required to be accurately adjusted, and the time required for overhauling is saved.
Description
Technical Field
The utility model relates to maintenance equipment for a generator rotor of a hydroelectric generating set, in particular to a maintenance and circle measurement device for the generator rotor of the hydroelectric generating set.
Background
After the rotor overhaul of the hydropower plant is completed, roundness measurement needs to be carried out on the rotor body, and compared with a stator, the hydropower plant has no effective support anti-deformation structure when the rotor is lifted; because the traditional rotor roundness measuring mode and tool have to accurately adjust the levelness of the rotor before measuring due to design reasons, the traditional roundness measuring mode and tool have the defect of low maintenance efficiency because the rotor levelness measurement and accurate adjustment require additional construction period and complicated process.
Disclosure of Invention
The utility model aims to solve the technical problems: compared with the traditional rotor roundness measuring tool, the rotor roundness measuring device does not need to accurately adjust the rotor levelness, saves the time required for maintenance, is suitable for measuring the roundness of the rotor after the maintenance of the hydraulic generator, can avoid the problem that the rotor roundness measuring device is suitable for measuring the roundness of the rotor after the maintenance of all hydraulic power plants because the rotor is irregular in shape and the gap between the stator and the rotor is uneven, so that irregular magnetic tension is generated in the running process of the hydraulic generator, the running vibration of the hydraulic generator is increased, and the running working condition of the hydraulic generator is seriously influenced.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a hydroelectric set generator rotor overhauls survey circle device, includes base, stand and locates the survey circle subassembly of stand, be equipped with the coaxial adjustment mechanism who is used for adjusting axiality between base and the hydroelectric set generator rotor on the base, coaxial adjustment mechanism is including installing a plurality of axial adjustment jackscrews and the backup pad that stretches out to arrange in the hole of hydroelectric set generator rotor that follow vertical direction on the base, be equipped with a plurality of radial adjustment jackscrews that follow the horizontal direction and arrange respectively in the backup pad, axial adjustment jackscrew lower extreme and the contact of hydroelectric set generator rotor, the outside of radial adjustment jackscrew and the contact of the hole inner wall of hydroelectric set generator rotor.
Optionally, the plurality of axial adjustment jackscrews are uniformly arranged on the same circumference taking the center of the base as the center of a circle, the supporting plate is an annular plate, and the plurality of radial adjustment jackscrews are uniformly arranged on the supporting plate.
Optionally, a plurality of connectors for being installed and fixed on the generator rotor of the hydroelectric generating set are further arranged on the base.
Optionally, survey the circle subassembly and including rotating center body, balance arm, measuring stick and percentage table, the rotating center body is established through the bearing housing and is installed on the stand, and balance arm and measuring arm link to each other with rotating center body respectively and both arrange on the same straight line of the axle center of rotating center body excessively, measuring arm's end is located to the measuring stick, be equipped with on the measuring stick and be used for detecting the percentage table of hydroelectric set generator rotor outer wall the rotating center body still install the percentage table that is used for detecting hydroelectric set generator rotor inner wall.
Optionally, the rotation center body is respectively sleeved and installed on the upright post through an angular contact bearing and a tapered roller bearing, and the tapered roller bearing is positioned at the lower side of the angular contact bearing.
Optionally, a balance weight is mounted on the balance arm.
Optionally, a level gauge is mounted on the measuring arm.
Optionally, the measuring rod is arranged in a vertical direction, and the length of the measuring arm exceeds the radius of the generator rotor of the hydro-generator set so that the measuring rod is arranged in a rotating manner outside the generator rotor of the hydro-generator set.
Optionally, be equipped with on the measuring stick and follow measuring stick gliding gauge stand, just the gauge stand passes through the bolt locking to be fixed on the measuring stick, the percentage table is installed on the gauge stand.
Optionally, be equipped with a plurality of tables on the measuring stick, the percentage table passes through the connecting piece detachably and installs on the table.
Compared with the prior art, the utility model has the following advantages: the coaxial adjusting mechanism comprises a plurality of axial adjusting jackscrews which are arranged on the base along the vertical direction and a supporting plate which extends out of an inner hole of the generator rotor of the hydroelectric generating set, wherein the supporting plate is respectively provided with a plurality of radial adjusting jackscrews which are arranged along the horizontal direction, the lower ends of the axial adjusting jackscrews are in contact with the generator rotor of the hydroelectric generating set, and the outer sides of the radial adjusting jackscrews are in contact with the inner wall of the inner hole of the generator rotor of the hydroelectric generating set.
Drawings
Fig. 1 is a schematic structural diagram of a circle measuring device in an embodiment of the utility model.
Fig. 2 is a schematic structural diagram of a circle measuring device in an application state according to an embodiment of the present utility model.
Legend description: 1. a base; 11. a connecting piece; 2. a column; 3. a circle measuring assembly; 31. rotating the central body; 311. angular contact bearings; 312. tapered roller bearings; 32. a balance arm; 321. a balance weight; 33. a measuring arm; 331. a level gauge; 34. a measuring rod; 341. a gauge stand; 35. a dial indicator; 4. a coaxial adjustment mechanism; 41. axially adjusting the jackscrews; 42. a support plate; 43. the jackscrews are radially adjusted.
Detailed Description
In order to ensure that the roundness of a rotor after maintenance can meet design requirements, and avoid the problem that the running vibration of a unit is seriously affected by the increase of running vibration of the unit due to unbalanced magnetic pull force generated by unbalanced air gap between a stator and a rotor of a generator caused by the fact that the roundness of the rotor does not reach the standard, as shown in fig. 1 and 2, the embodiment provides a maintenance and roundness measuring device for the rotor of a hydro-generator set, which comprises a base 1, a stand column 2 and a roundness measuring component 3 arranged on the stand column 2, wherein the base 1 is provided with a coaxial adjusting mechanism 4 for adjusting the coaxiality between the base 1 and the rotor of the hydro-generator set, the coaxial adjusting mechanism 4 comprises a plurality of axial adjusting jackscrews 41 arranged on the base 1 along the vertical direction and a supporting plate 42 extending out of an inner hole of the rotor of the hydro-generator set, the supporting plate 42 is respectively provided with a plurality of radial adjusting jackscrews 43 arranged along the horizontal direction, the lower end of the axial adjusting jackscrews 41 are contacted with the rotor of the hydro-generator set, and the outer side of the radial adjusting jackscrews 43 are contacted with the inner wall of the inner hole of the rotor of the hydro-generator set. In the embodiment, the base 1 is a frame structure formed by welding steel plates, and has the characteristics of firm structure, good rigidity and no deformation.
In order to ensure the adjustment performance of the coaxial adjustment mechanism 4, as shown in fig. 1, a plurality of axial adjustment jackscrews 41 are uniformly arranged on the same circumference centered on the center of the base 1 in the present embodiment, a support plate 42 is an annular plate, and a plurality of radial adjustment jackscrews 43 are uniformly arranged on the support plate 42.
As shown in fig. 1, in this embodiment, the base 1 is further provided with a plurality of connectors 11 for being mounted and fixed on the rotor of the generator of the hydro-generator set, and it should be noted that, the connectors 11 are only used for realizing basic connection and fixation with the rotor of the generator of the hydro-generator set, and fine coaxiality adjustment depends on the coaxiality adjustment mechanism 4.
The circle measuring assembly 3 comprises a rotating center body 31, a balance arm 32, a measuring arm 33, a measuring rod 34 and a dial indicator 35, wherein the rotating center body 31 is sleeved and installed on the upright post 2 through a bearing, the balance arm 32 and the measuring arm 33 are respectively connected with the rotating center body 31 and are arranged on the same straight line passing through the axle center of the rotating center body 31, the measuring rod 34 is arranged at the tail end of the measuring arm 33, the dial indicator 35 for detecting the outer wall of the rotor of the hydro-generator set is arranged on the measuring rod 34, and the dial indicator 35 for detecting the inner wall of the rotor of the hydro-generator set is further installed on the rotating center body 31, so that the measurement of the outer wall and the inner wall of the rotor of the hydro-generator set can be realized, and the measurement can be synchronously performed to improve the detection efficiency.
The rotating center body 31 is sleeved and mounted on the upright post 2 through the angular contact bearing 311 and the tapered roller bearing 312 respectively, and the tapered roller bearing 312 is positioned at the lower side of the angular contact bearing 311. The precision of the rotation center body 31 is ensured by the bearing manufacturing precision of the angular contact bearing 311 and the tapered roller bearing 312 and the machining precision of the rotation center body 31. In the present embodiment, the angular contact bearing 311 is 7040AC (P5 precision) and the tapered roller bearing 312 is 32044AX2.
The balance arm 32 and the measuring arm 33 are all of truss structures welded by steel pipes, and are characterized by good rigidity, no vibration and very stable starting or stopping process.
In order to achieve better gravity balance, as shown in fig. 1, a balance weight 321 is mounted on the balance arm 32 in this embodiment.
In order to facilitate horizontal adjustment, as shown in fig. 1, a level 331 is mounted on the measuring arm 33 in this embodiment. In this embodiment, the level 331 is a frame level.
As shown in fig. 1, the measuring rod 34 is arranged in the vertical direction in the present embodiment, and the length of the measuring arm 33 exceeds the radius of the hydro-generator set generator rotor so that the measuring rod 34 is rotatably arranged outside the hydro-generator set generator rotor.
In order to facilitate the adjustment of the height to be measured, as shown in fig. 1, in this embodiment, a gauge stand 341 that can slide along the measuring rod 34 is provided on the measuring rod 34, the gauge stand 341 is fastened to the measuring rod 34 by a bolt lock, and a dial indicator 35 is mounted on the gauge stand 341, so that the height of the dial indicator 35 can be adjusted according to the adjustment of the height of the gauge stand 341.
As shown in fig. 1, in this embodiment, the measuring rod 34 is provided with a plurality of gauge stands 341, and the dial indicators 35 are detachably mounted on the gauge stands 341 through connectors, so that a plurality of dial indicators 35 can be mounted to achieve parallel measurement for different heights, thereby improving measurement efficiency and reducing the consumption of manpower and time for measurement.
The using method of the hydro-generator set generator rotor overhauling and circle measuring device comprises the following steps: and (3) aligning equipment: the upright post 2 is hung on a rotor support, the hole of the base 1 is aligned with the phi 95 hole on the support, the base is combined on the rotor support by using the connecting piece 11 (only slightly tightening is needed at the beginning, and then adjustment is needed), the axial adjustment jackscrew 41 is adjusted, the rotor size is measured by using the inside micrometer center, and the rotor center is coincided with the base 1 when the four directions are equal. And (3) adjusting the coaxiality of the equipment: placing a frame type level meter 331 on each of the finishing surfaces of the measuring arm and the upper end of the rotor, and rotating the measuring arm 33 around the rotor body for one circle, wherein if the variation of the two level meters 331 is equal, the rotor body is coaxial with the circle measuring assembly 3, so that the circle measuring requirement of the rotor is met; after the adjustment is completed, the radial adjustment jack 43 is fixed. And (3) detecting equipment precision: radial runout tolerance: and (3) beating the surface of the side measuring section of the upright post 2 by using a dial indicator 35, rotating the measuring arm for one circle, observing the change of the indication number, and proving that the roundness of the rotor is qualified when the change of the indication number is within a required range. The level 331 is placed on the finish machining surface of the measuring arm 33 and the rotor body, the measuring arm 33 rotates for one circle, the reading of the level 331 is observed, and the design accuracy is less than or equal to 0.02mm/m.
In summary, the device for overhauling and measuring the circle of the rotor of the hydroelectric generating set is a semi-automatic horizontal-free circle measuring device, and accurate adjustment of the levelness of the rotor is not needed when the roundness is measured, and coaxial adjustment with the rotor can be quickly realized through a coaxial adjusting mechanism; the hydro-generator set generator rotor overhauling and circle measuring device of the embodiment also has the characteristic of flexibly adjusting the measuring point, is convenient for personnel to quickly adjust the measuring point on the outer side of the rotor with larger volume, and has high maneuverability. In addition, the maintenance and circle measurement device for the rotor of the hydroelectric generating set is designed to avoid the process of horizontal adjustment of the rotor before circle measurement after maintenance, shorten the time required by maintenance and greatly improve the maintenance efficiency and quality; the higher the roundness of the rotor is, the more uniform the air gap between the stator and the rotor is, which is more beneficial to the long-term stable operation of the generator and improves the economic benefit of the power plant.
The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.
Claims (10)
1. The utility model provides a hydroelectric set generator rotor overhauls survey circle device, its characterized in that, including base (1), stand (2) and locate survey circle subassembly (3) of stand (2), be equipped with on base (1) and be used for adjusting coaxial adjustment mechanism (4) between base (1) and the hydroelectric set generator rotor, coaxial adjustment mechanism (4) are including installing a plurality of axial adjustment jackscrews (41) that arrange along vertical direction on base (1) and stretching out backup pad (42) of arranging in the hole of hydroelectric set generator rotor, be equipped with a plurality of radial adjustment jackscrews (43) of arranging along the horizontal direction on backup pad (42) respectively, axial adjustment jackscrew (41) lower extreme and hydroelectric set generator rotor contact, the outside of radial adjustment jackscrew (43) and the contact of hydroelectric set generator rotor's hole inner wall.
2. The overhauling and roundness measuring device for the generator rotor of the hydro-generator set according to claim 1, wherein the plurality of axial adjustment jackscrews (41) are uniformly arranged on the same circumference taking the center of the base (1) as the center of the circle, the supporting plate (42) is an annular plate, and the plurality of radial adjustment jackscrews (43) are uniformly arranged on the supporting plate (42).
3. The hydro-generator set generator rotor overhaul roundness measuring device according to claim 2, wherein a plurality of connecting pieces (11) for being installed and fixed on the hydro-generator set generator rotor are further arranged on the base (1).
4. The hydro-generator set generator rotor overhauls and surveys circle device according to claim 3, characterized in that, survey circle subassembly (3) including rotating center body (31), balance arm (32), measuring arm (33), measuring stick (34) and percentage table (35), rotating center body (31) are established through the bearing housing and are installed on stand (2), balance arm (32) and measuring arm (33) are connected with rotating center body (31) respectively and both arrange on the same straight line of the axle center of rotating center body (31), measuring stick (34) are located the end of measuring arm (33), be equipped with on measuring stick (34) and be used for detecting hydro-generator set generator rotor outer wall percentage table (35) rotating center body (31) are last still to install be used for detecting hydro-generator set generator rotor inner wall.
5. The overhauling and roundness measuring device for the generator rotor of the hydroelectric generating set according to claim 4, wherein the rotating center body (31) is sleeved and installed on the upright post (2) through an angular contact bearing (311) and a tapered roller bearing (312), and the tapered roller bearing (312) is positioned on the lower side of the angular contact bearing (311).
6. The hydro-generator set generator rotor overhaul roundness measuring device according to claim 5, wherein a balance weight (321) is installed on the balance arm (32).
7. The hydro-generator set generator rotor overhaul roundness measuring device according to claim 6, wherein a level meter (331) is mounted on the measuring arm (33).
8. The hydro-generator set generator rotor service roundness measuring device according to claim 7, characterized in that the measuring rod (34) is arranged in a vertical direction, and the length of the measuring arm (33) exceeds the radius of the hydro-generator set generator rotor so that the measuring rod (34) is rotatably arranged outside the hydro-generator set generator rotor.
9. The overhauling and roundness measuring device for the generator rotor of the hydroelectric generating set according to claim 8, wherein a gauge stand (341) capable of sliding along the measuring rod (34) is arranged on the measuring rod (34), the gauge stand (341) is locked and fixed on the measuring rod (34) through a bolt, and the dial indicator (35) is arranged on the gauge stand (341).
10. The overhauling and roundness measuring device for the generator rotor of the hydroelectric generating set according to claim 9, wherein a plurality of gauge stands (341) are arranged on the measuring rod (34), and the dial indicators (35) are detachably arranged on the gauge stands (341) through connecting pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320581449.6U CN219531918U (en) | 2023-03-22 | 2023-03-22 | Hydroelectric set generator rotor overhauls survey circle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320581449.6U CN219531918U (en) | 2023-03-22 | 2023-03-22 | Hydroelectric set generator rotor overhauls survey circle device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219531918U true CN219531918U (en) | 2023-08-15 |
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ID=87634199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320581449.6U Active CN219531918U (en) | 2023-03-22 | 2023-03-22 | Hydroelectric set generator rotor overhauls survey circle device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219531918U (en) |
-
2023
- 2023-03-22 CN CN202320581449.6U patent/CN219531918U/en active Active
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