CN220051504U - Auxiliary adjusting device for rotating wheel center of large mixed flow unit - Google Patents
Auxiliary adjusting device for rotating wheel center of large mixed flow unit Download PDFInfo
- Publication number
- CN220051504U CN220051504U CN202321441436.5U CN202321441436U CN220051504U CN 220051504 U CN220051504 U CN 220051504U CN 202321441436 U CN202321441436 U CN 202321441436U CN 220051504 U CN220051504 U CN 220051504U
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- center
- rotating wheel
- adjusting device
- flow unit
- stop block
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- 241000227287 Elliottia pyroliflora Species 0.000 claims description 6
- 238000000034 method Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Hydraulic Turbines (AREA)
Abstract
The utility model provides a large-scale mixed flow unit runner center auxiliary adjustment device, includes the dog, and the dog is fixed on basic ring, and threaded connection has center adjustment jackscrew on the dog, and end strutting arrangement is installed to center adjustment jackscrew end, and end strutting arrangement carries out central location, direction to the runner. The auxiliary adjusting device for the center of the rotating wheel of the large mixed-flow unit reduces the adjusting times and the adjusting quantity of the rotating wheel.
Description
Technical Field
The utility model relates to a large and medium mixed flow type hydraulic generator, in particular to an auxiliary adjusting device for the center of a rotating wheel of a large mixed flow type hydraulic generator, which is suitable for center adjustment during the returning of the rotating wheel after the large and medium mixed flow type hydraulic generator is overhauled.
Background
After overhaul of the mixed flow type hydroelectric generating set, when the runner is assembled back, the runner level is required to be adjusted to be less than or equal to 0.02mm/m, the center is required to be adjusted to be less than or equal to 0.15mm, the traditional mode is that after the runner level is basically adjusted to be qualified, a copper wedge plate is used between the runner and a bottom ring to limit the position, the center of the runner is required to be adjusted, the mode is required to be at least 8 directions, the insertion depth of the wedge plate is continuously adjusted along with the falling of the runner, the wedge plate inserting personnel are often not engaged with each other, after the runner is completely fallen, gaps between the runner and the lower leakage stop ring in all directions are uneven, so that the center of the runner is not qualified, the runner is required to be restarted, and the overhaul period of the set is restricted.
Disclosure of Invention
The utility model aims to solve the technical problem of providing an auxiliary adjusting device for the center of a rotating wheel of a large mixed flow unit, which is used for accurately controlling the center of the rotating wheel and reducing the lifting times of the rotating wheel.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a large-scale mixed flow unit runner center auxiliary adjustment device, includes the dog, and the dog is fixed on basic ring, and threaded connection has center adjustment jackscrew on the dog, and end strutting arrangement is installed to center adjustment jackscrew end, and end strutting arrangement carries out central location, direction to the runner.
The stop dog is L-shaped, grooves are formed in the left and right sides of the horizontal portion of the lower end of the stop dog, and a threaded through hole is formed in the vertical portion of the upper end of the stop dog.
The end supporting device comprises a supporting disc and a sliding copper bush, and the supporting disc and the sliding copper bush are connected through an inner hexagonal countersunk head bolt.
The side wall of the supporting disc is provided with a deflector rod hole.
The utility model relates to an auxiliary adjusting device for the center of a rotating wheel of a large mixed flow unit, which has the following technical effects:
1) The device can be used for pre-controlling the center of the rotating wheel in the falling process of the rotating wheel, and can enable the center of the rotating wheel to be allowed to deviate from a target value and the like, so that the adjustment times and adjustment quantity are reduced.
2) The device can avoid repeatedly lifting the rotating wheel to adjust the center of the rotating wheel after the rotating wheel is adjusted in level, the adjustment value is quantized and adjusted accurately, the adjustment can be basically successful at one time, the working efficiency is improved, and the manpower resources are saved; and is fully practical in the overhaul of a certain power station unit.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
fig. 1 is a front view of the present utility model.
Fig. 2 is a left side view of the present utility model.
Fig. 3 is a front view of a stopper in the present utility model.
Fig. 4 is a front view of an end support apparatus according to the present utility model.
Fig. 5 is a schematic view of the working state of the present utility model.
Fig. 6 is an enlarged partial schematic view of fig. 5.
In the figure: the hydraulic jack comprises a rotating wheel 1, a bottom ring 2, an auxiliary bottom ring 3, a lower fixed leakage-stopping ring 4, a lower rotating leakage-stopping ring 5, a wedge plate 6, a central adjusting device 7, a single-acting thin hydraulic jack 8, a foundation ring 9, a stop block 7-1, a central adjusting jackscrew 7-2, an end supporting device 7-3, a first locking nut 7-4, a second locking nut 7-5, a groove 7-1-1, a threaded through hole 7-1-2, a screw rod section 7-2-1, an adjusting square 7-2-2, a supporting disc 7-3-1, a sliding copper tile 7-3-2, a deflector rod hole 7-3-3 and an inner hexagonal countersunk bolt 7-3-4.
Detailed Description
As shown in fig. 1-4, the auxiliary adjusting device for the center of the rotating wheel of the large mixed-flow unit mainly comprises a stop block 7-1, a center adjusting jackscrew 7-2, an end supporting device 7-3, a first locking nut 7-4 and a second locking nut 7-5.
The stop block 7-1 is of an L-shaped structure, a groove 7-1-1 is formed in the welding position of the left and right horizontal sections of the lower portion of the stop block 7-1 and the foundation ring, the slope of the groove 7-1-1 is 45 degrees, and the width is 5-10 mm. A threaded through hole 7-1-2 is transversely formed in the upper vertical section of the stop block 7-1, and the threaded through hole 7-1-2 is mainly used for being connected with the center adjusting jackscrew 7-2.
The adjusting jackscrew 7-2 is of a special jackscrew structure and mainly comprises a screw rod section 7-2-1 and an adjusting square 7-2-2. The screw rod section 7-2-1 is used for connecting the stop block 7-1 and the end supporting device 7-3, and is a full-thread screw rod. The square 7-2-2 is regulated to be of a square head structure, and the screw rod section 7-2-1 is mainly convenient to operate to advance and retreat.
The end supporting device 7-3 mainly comprises a supporting disc 7-3-1 and a sliding copper bush 7-3-2. The supporting disk 7-3-1 and the sliding copper bush 7-3-2 are connected by adopting 4 inner hexagonal countersunk bolts 7-3-4. The side wall of the support disc 7-3-1 is provided with a deflector rod hole 7-3-3, and the deflector rod hole 7-3-3 facilitates the insertion of a rod piece and drives the support disc 7-3-1 to rotate, so that the support disc is installed and disassembled. The end support 7-3 has mainly two functions: 1) Controlling the center of the rotating wheel 1 in the falling process of the rotating wheel 1; 2) And in the center adjustment process of the rotating wheel 1, the force of the single-action thin jack 8 is transmitted.
The stop block 7-1 is connected with the center adjusting jackscrew 7-2 through threads, and the second locking nut 7-5 is used for strengthening stress. The end supporting device 7-3 is connected with the center adjusting jackscrew 7-2 by screw threads, and the first locking nut 7-4 is used for strengthening stress.
Working principle and process:
1) Before the rotating wheel 1 is lifted into the pit, the stop block 7-1 is welded to the foundation ring, and the welding position avoids the R angle position of the rotating wheel blade;
2) The center adjusting jackscrew 7-2, the end supporting device 7-3 and the like are mounted on the stop block 7-1, and the center adjusting jackscrew 7-2 and the end supporting device 7-3 are locked by the first locking nut 7-4.
3) When the rotating wheels 1 are hung into a machine pit and fall to the position that the lower rotation leakage-stopping ring 5 is about 5-10 mm away from the wedge plate 6, the jackscrews 7-2 are adjusted by the rotation center, so that the center adjusting devices 7 at the rotating wheels 1 just cling to the rotating wheels 1, the rotating wheels 1 are limited, and gaps between the lower rotation leakage-stopping ring 5 and the lower rotation leakage-stopping ring 4 are measured. The central adjusting device 7 is used for fixing the rotating wheel 1, so that the gap between the lower fixed leak-proof ring 4 and the lower rotating leak-proof ring 5 can be conveniently measured.
4) When the calculation of the center adjustment amount of the wheel 1 is completed, the position of the wheel 1 is adjusted using the center adjustment device 7. The center adjusting device 7 is used for adjusting the center of the rotating wheel, so that the gap between the lower fixed leak-proof ring 4 and the lower rotating leak-proof ring 5 meets the requirement.
5) The wheel continues to drop until it is completely implemented, at which point the centering device 7 plays a guiding and positioning role.
6) Measuring the gaps between the lower fixed leak-stopping ring 4 and the lower rotating leak-stopping ring 5, and lifting the rotating wheel 1 (the weight of the rotating wheel 1 is 50 t) if the gaps do not meet the requirements; at this time, a single-action thin hydraulic jack 8 for pushing the wheel 1 to the target center is installed between the center adjustment device 7 and the wheel 1. If the single-acting thin hydraulic jack 8 is too thick to fit in between the end support 7-3 and the runner 1, all but the block 7-1 can be removed, leaving only the block 7-1 for force transfer. The center adjusting device 7 is used for accurately adjusting the center of the rotating wheel, so that the gap of the lower leakage stop ring of the rotating wheel meets the requirement.
Claims (4)
1. The utility model provides a supplementary adjusting device in large-scale mixed flow unit runner center which characterized in that: the device comprises a stop block (7-1), wherein the stop block (7-1) is fixed on a foundation ring (9), a center adjusting jackscrew (7-2) is connected to the stop block (7-1) in a threaded mode, an end supporting device (7-3) is arranged at the end of the center adjusting jackscrew (7-2), and the end supporting device (7-3) is used for carrying out center positioning and guiding on a rotating wheel (1).
2. The auxiliary adjusting device for the center of the rotating wheel of the large mixed-flow unit according to claim 1, wherein the auxiliary adjusting device is characterized in that: the stop block (7-1) is L-shaped, grooves (7-1-1) are formed in the left and right sides of the horizontal part of the lower end of the stop block (7-1), and a threaded through hole (7-1-2) is formed in the vertical part of the upper end of the stop block (7-1).
3. The auxiliary adjusting device for the center of the rotating wheel of the large mixed-flow unit according to claim 1, wherein the auxiliary adjusting device is characterized in that: the end supporting device (7-3) comprises a supporting disc (7-3-1) and a sliding copper bush (7-3-2), and the supporting disc (7-3-1) and the sliding copper bush (7-3-2) are connected through an inner hexagonal countersunk head bolt (7-3-4).
4. The auxiliary adjusting device for the center of the rotating wheel of the large mixed-flow unit according to claim 3, wherein the auxiliary adjusting device is characterized in that: the side wall of the supporting disc (7-3-1) is provided with a deflector rod hole (7-3-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321441436.5U CN220051504U (en) | 2023-06-07 | 2023-06-07 | Auxiliary adjusting device for rotating wheel center of large mixed flow unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321441436.5U CN220051504U (en) | 2023-06-07 | 2023-06-07 | Auxiliary adjusting device for rotating wheel center of large mixed flow unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220051504U true CN220051504U (en) | 2023-11-21 |
Family
ID=88787273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321441436.5U Active CN220051504U (en) | 2023-06-07 | 2023-06-07 | Auxiliary adjusting device for rotating wheel center of large mixed flow unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220051504U (en) |
-
2023
- 2023-06-07 CN CN202321441436.5U patent/CN220051504U/en active Active
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