CN214643005U - Hydro-turbo generator set shaft coupling pinhole alignment ware - Google Patents
Hydro-turbo generator set shaft coupling pinhole alignment ware Download PDFInfo
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- CN214643005U CN214643005U CN202120356289.6U CN202120356289U CN214643005U CN 214643005 U CN214643005 U CN 214643005U CN 202120356289 U CN202120356289 U CN 202120356289U CN 214643005 U CN214643005 U CN 214643005U
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Abstract
A shaft coupling pin hole aligner for a hydroelectric generating set comprises an expansion cylinder and a stud component; the expansion cylinder comprises a cylinder body, the side wall of the cylinder body is provided with a notch, and two ends of the cylinder body are provided with conical ports; the stud component comprises a stud, pressing end covers are arranged at two ends of the stud, a pressing nut is arranged at the pressing end cover on one side of the stud, and when the pressing nut is screwed in, the pressing end covers are gradually pressed on the conical port and the cylinder body is gradually expanded. The utility model provides a pair of hydroelectric set shaft coupling pinhole alignment ware realizes the centering alignment work of hydroelectric set shaft coupling in-process pinhole, has avoided the damage in the equipment unit installation.
Description
Technical Field
The utility model relates to an alignment ware, especially a hydroelectric set shaft coupling hole alignment ware.
Background
The lower flange of the rotor of the mixed-flow water turbine generator set of a certain model and the pin hole of the lower end shaft of the generator are in clearance fit with the coupling pin, the fit clearance interval is 0.015-0.12 mm, the clearance is very small, the requirement on the fit precision is quite high, and the pin can be smoothly installed only by aligning the pin hole of the lower flange of the rotor with the pin hole of the lower end shaft of the generator. The conventional solution in the process of mounting the pin on the shaft coupling of the hydroelectric generating set is to firstly input a high-pressure oil deloading system, observe the position condition of a pin hole, push a rotor to align a lower flange pin hole of the rotor with a lower end shaft pin hole of a generator, push the rotor to align the pin hole (the deviation is not more than 0.12 mm) while needing to control the high-pressure oil deloading system, and make the pin hole alignment complicated and changeable due to the high alignment requirement, the alignment difficulty is large, and the working efficiency is low.
Disclosure of Invention
The utility model aims to solve the technical problem that a hydroelectric set shaft coupling pinhole alignment ware is provided, realize the centering alignment work of hydroelectric set shaft coupling in-process pinhole high-efficiently accurately, avoided the damage in the equipment unit installation, increase substantially work efficiency, alleviate staff's intensity of labour.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
a shaft coupling pin hole aligner for a hydroelectric generating set comprises an expansion cylinder and a stud component;
the expansion cylinder comprises a cylinder body, the side wall of the cylinder body is provided with a notch, and two ends of the cylinder body are provided with conical ports;
the stud component comprises a stud, pressing end covers are arranged at two ends of the stud, a pressing nut is arranged at the pressing end cover on one side of the stud, and when the pressing nut is screwed in, the pressing end covers are gradually pressed on the conical port and the cylinder body is gradually expanded.
One of the two pressing end covers is fixedly connected with the stud, and the other pressing end cover freely penetrates through the stud.
The stud is sleeved with a return spring.
The end of the stud is in threaded connection with a lifting lug.
The diameter of the cylinder in the unexpanded state is 3.5-5.5mm smaller than the diameter of the pin hole to be aligned.
The utility model relates to a hydroelectric set shaft coupling hole alignment ware has following technological effect:
1) the alignment device has an expansion self-alignment function, changes the traditional high-precision pin hole alignment work into low-precision alignment work, greatly reduces the hole alignment precision, and improves the working efficiency.
2) The spring automatic reset function of the alignment device, the spring resets after the alignment work is completed, the end cover is pressed to move out of the barrel, the diameter of the barrel is reduced, and the barrel can be directly hung out, so that the assembly and disassembly are convenient.
Drawings
The invention will be further explained with reference to the following figures and examples:
fig. 1 is a schematic view of the present invention.
Fig. 2 is a front view of the middle expansion cylinder of the present invention.
Fig. 3 is a top view of the middle expansion cylinder of the present invention.
Fig. 4 is a front view of the stud assembly of the present invention.
Fig. 5 is a front view of the stud of the present invention.
Fig. 6 is a schematic view of a first state of the lower flange pin hole of the middle rotor and the lower end shaft pin hole of the generator.
Fig. 7 is a schematic view of the middle cylinder of the present invention before it is expanded.
Fig. 8 is a schematic view of the expanded cylinder of the present invention.
Fig. 9 is a schematic diagram of a second state of the lower flange pin hole of the middle rotor and the lower end shaft pin hole of the generator of the present invention.
In the figure: the expansion cylinder 1, the stud component 2, the cylinder body 1.1, the notch 1.2, the tapered end 1.3, the stud 2.1, the compression end cover 2.2, the compression nut 2.3, the reset spring 2.4, the lifting lug 2.5, the rotor lower flange pin hole 3 and the generator lower end shaft pin hole 4.
Detailed Description
As shown in figure 1, the coupler pin hole aligner for the hydroelectric generating set comprises an expansion cylinder 1 and a stud assembly 2.
As shown in fig. 2-3, the expansion cylinder 1 comprises a cylinder body 1.1, and the diameter of the cylinder body 1.1 in an unexpanded state is 3.5-5.5mm smaller than the diameter of a pin hole to be aligned. The lateral wall of the cylinder body 1.1 is provided with a gap 1.2, and the gap 1.2 is distributed along the length direction of the cylinder body 1.1 and is the same as the cylinder body in length. Two ends of the cylinder body 1.1 are provided with conical ports 1.3; the conical port 1.3 becomes gradually larger in diameter from the inside to the outside.
As shown in fig. 4-5, the stud assembly 2 includes a stud 2.1, and the stud 2.1 is divided into two sections, one section is smooth, and the other section is threaded. The smooth end of the stud 2.1 is fixedly connected with the compaction end cover 2.2, the threaded end of the stud 2.1 freely penetrates into the other compaction end cover 2.2, the compaction nut 2.3 is in threaded connection with the stud 2.1, and the other compaction end cover 2.2 is gradually pressed into the conical port 1.3 to enable the cylinder body 1.1 to gradually expand.
The stud 2.1 is sleeved with a return spring 2.4. After the alignment work is finished, the compression nut 2.3 is withdrawn through the spring reset, so that the diameter of the cylinder 1.1 is reduced, and the cylinder can be conveniently taken out.
The end of the stud 2.1 is in threaded connection with a lifting lug 2.5. The device is convenient to hang and convey.
The working principle and the process are as follows:
1) and assembling: the reset spring 2.4 is sleeved on the stud 2.1, and a lubricant is coated on the conical inclined plane of the pressing end cover 2.2; sleeving the cylinder body 1.1 on the stud 2.1; 3. sleeving the movable compaction end cover 2.2 on the stud 2.1; mounting a compression nut 2.3 on the stud 2.1 and on one side of the movable compression end cover 2.2, and attaching the compression nut 2.3 to the movable compression end cover 2.2; and mounting a lifting lug 2.5 with internal threads on the end head of the stud 2.1.
2) And use: starting the high-pressure oil load reduction device, adjusting the dislocation of a rotor lower flange pin hole 3 and a generator lower end shaft pin hole 4, and installing an aligner when the dislocation is less than 4 mm; smearing lubricant on the hole walls of a shaft pin hole 4 at the lower end of the generator and a shaft pin hole 3 at the lower end of the rotor, hanging the device into the shaft pin hole 4 at the lower end of the generator and the shaft pin hole 3 at the lower end of the rotor (as shown in figure 7), gradually screwing a compression nut 2.3, gradually enabling a movable compression end cover 2.2 to gradually enter a conical port 1.3, expanding a cylinder 1.1 along with jacking, gradually correcting the shaft pin hole 3 at the lower end of the rotor and the shaft pin hole 4 at the lower end of the generator to be in a centering state, and thus realizing alignment (the aligned state is shown in figures 8-9). When the lower flange pin hole 3 of the rotor is aligned with the hole wall of the lower end shaft pin hole 4 of the generator, a pin can be installed.
In addition, because the lower flange pin holes 3 of the rotor and the lower shaft pin holes 4 of the generator are uniformly distributed along the circumferential direction and are all 12, at least 3 groups of aligners are inserted into the upper pin holes and the lower pin holes for adjustment in the aligning process.
Claims (5)
1. The utility model provides a hydroelectric set shaft coupling pinhole alignment ware which characterized in that: comprises an expansion cylinder (1) and a stud component (2);
the expansion cylinder (1) comprises a cylinder body (1.1), a gap (1.2) is formed in the side wall of the cylinder body (1.1), and two ends of the cylinder body (1.1) are provided with conical ports (1.3);
the double-screw bolt subassembly (2) includes double-screw bolt (2.1), and double-screw bolt (2.1) both ends are equipped with compressing tightly end cover (2.2), and compressing tightly end cover (2.2) department that lies in one side on double-screw bolt (2.1) installs gland nut (2.3), and when gland nut (2.3) screwed in, compressing tightly end cover (2.2) and compress tightly gradually on tapered port (1.3) and make barrel (1.1) expand gradually.
2. The hydro-turbo generator set coupling pin hole aligner of claim 1, wherein: one of the two pressing end covers (2.2) is fixedly connected with the stud (2.1), and the other pressing end cover freely penetrates through the stud (2.1).
3. The hydro-turbo generator set coupling pin hole aligner of claim 1, wherein: the stud (2.1) is sleeved with a return spring (2.4).
4. The hydro-turbo generator set coupling pin hole aligner of claim 1, wherein: the end of the stud (2.1) is connected with a lifting lug (2.5) through a thread.
5. The hydro-turbo generator set coupling pin hole aligner of claim 1, wherein: the diameter of the cylinder (1.1) in the unexpanded state is 3.5-5.5mm smaller than the diameter of the pin hole to be aligned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120356289.6U CN214643005U (en) | 2021-02-06 | 2021-02-06 | Hydro-turbo generator set shaft coupling pinhole alignment ware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120356289.6U CN214643005U (en) | 2021-02-06 | 2021-02-06 | Hydro-turbo generator set shaft coupling pinhole alignment ware |
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| Publication Number | Publication Date |
|---|---|
| CN214643005U true CN214643005U (en) | 2021-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120356289.6U Active CN214643005U (en) | 2021-02-06 | 2021-02-06 | Hydro-turbo generator set shaft coupling pinhole alignment ware |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837872A (en) * | 2022-05-18 | 2022-08-02 | 中国长江电力股份有限公司 | Self-alignment device and method for rotor coupling of mixed-flow water turbine generator set |
-
2021
- 2021-02-06 CN CN202120356289.6U patent/CN214643005U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837872A (en) * | 2022-05-18 | 2022-08-02 | 中国长江电力股份有限公司 | Self-alignment device and method for rotor coupling of mixed-flow water turbine generator set |
| CN114837872B (en) * | 2022-05-18 | 2023-06-13 | 中国长江电力股份有限公司 | Rotor coupling self-alignment device and method for mixed flow type hydroelectric generating set |
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