CN220452083U - Structure convenient to minor axis dismantles under hydraulic generator stator - Google Patents
Structure convenient to minor axis dismantles under hydraulic generator stator Download PDFInfo
- Publication number
- CN220452083U CN220452083U CN202321790262.3U CN202321790262U CN220452083U CN 220452083 U CN220452083 U CN 220452083U CN 202321790262 U CN202321790262 U CN 202321790262U CN 220452083 U CN220452083 U CN 220452083U
- Authority
- CN
- China
- Prior art keywords
- guide vane
- vane
- short shaft
- disassembly
- guide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000010720 hydraulic oil Substances 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 7
- 230000006378 damage Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Hydraulic Turbines (AREA)
Abstract
The utility model belongs to the field of hydraulic generators, and particularly relates to a disassembly structure of a lower short shaft of a guide vane of a hydraulic generator. The device comprises a joint bearing, a guide vane, a lower short shaft of the guide vane and a sealing cover; the joint bearing is externally connected with the guide vane; one end in the knuckle bearing is connected with the lower short shaft of the guide vane, and the other end of the knuckle bearing is connected with the sealing cover; and a through hole for disassembly is formed in the lower short shaft of the guide vane. The structure of the utility model can utilize the thrust of hydraulic oil to detach the short shaft under the guide vane, and has the advantages of simple detachment, high efficiency and short construction period.
Description
Technical Field
The utility model belongs to the field of hydraulic generators, and particularly relates to a disassembly structure of a lower short shaft of a guide vane of a hydraulic generator.
Background
The hydro-generator is a generator which uses a water turbine as a prime motor to convert water energy into electric energy. When the water flow passes through the water turbine, the water energy is converted into mechanical energy, the rotating shaft of the water turbine drives the rotor of the generator, and the mechanical energy is converted into electric energy to be output. Is the main power equipment for generating electric energy in hydropower stations.
A desk-lamp bubble tubular hydroelectric generating set used in a hydropower station is arranged in a horizontal shaft mode. When the turbine runner of the unit is modified and overhauled, the lower short shaft of the guide vane and the guide vane are required to be disassembled; in the prior art, the short shaft under the guide vane is dismounted through mechanical force, but the dismounting difficulty, the low efficiency and the unsecured construction period of the mechanical force exist, and equipment damage and personal injury accidents are easily caused.
In view of this, the present utility model has been made.
Disclosure of Invention
In order to solve the technical problems in the prior art, the utility model provides the dismounting device for the lower short shaft of the guide vane of the hydraulic generator, and the structure of the dismounting device can utilize the thrust of hydraulic oil to dismount the lower short shaft of the guide vane, and has the advantages of simplicity in dismounting, high efficiency and short construction period.
The utility model comprises the following technical scheme:
the utility model provides a structure which is convenient for disassembling a short shaft under a guide vane of a hydraulic generator,
the device comprises a joint bearing, a guide vane, a lower short shaft of the guide vane and a sealing cover;
the joint bearing is externally connected with the guide vane;
one end in the knuckle bearing is connected with the lower short shaft of the guide vane, and the other end of the knuckle bearing is connected with the sealing cover;
and a through hole for disassembly is formed in the lower short shaft of the guide vane.
Further, an internal thread is provided in the through hole.
Further, one end of the through hole far away from the knuckle bearing is provided with an internal thread.
Further, a plurality of through holes are provided.
Further, the plurality of through holes are uniformly arranged on the lower short shaft of the guide vane.
Further, the lower short shaft of the guide vane comprises a limiting part and a connecting part, wherein the limiting part is connected with the connecting part, and the connecting part is used for being connected with the knuckle bearing.
Further, the guide vane assembly further comprises a guide ring in the guide mechanism, wherein the guide ring in the guide mechanism is used for guiding water to the guide vane;
the connecting part of the lower short shaft of the guide vane passes through the inner guide ring of the water guide mechanism and is connected with the knuckle bearing;
and the limiting part of the lower short shaft of the guide vane is connected with the inner guide ring of the water guide mechanism.
Further, the outer diameter of the connecting portion is smaller than the outer diameter of the limiting portion.
Further, the sealing cover is connected with the lower short shaft of the guide vane.
By adopting the technical scheme, the utility model has the following advantages:
1. the structure of the utility model can utilize the thrust of hydraulic oil to detach the short shaft under the guide vane, and has the advantages of simple detachment, high efficiency and short construction period.
2. The utility model solves the problem that the joint bearing is damaged due to the short shaft under the guide vane and the lower part Kong Kazu of the guide vane, which are easy to appear in the traditional disassembly method.
3. The utility model solves the safety hazard problem of workers in the traditional disassembly method.
4. The utility model solves the problems of unbalanced stress and uncontrollable stress in the process of disassembling the short shaft under the guide vane.
5. The utility model solves the problem that the joint bearing under the guide vane is damaged when the short shaft under the guide vane of the water guide mechanism of the bulb through-flow unit is difficult to detach.
6. The guide vane lower short shaft dismounting device can be used for dismounting the guide vane lower short shaft more effectively and safely, and the occurrence of equipment injury accidents is avoided. In the unit maintenance, the working efficiency is improved, the damage to equipment is reduced, and the reliability of safe operation of the unit is improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural view of a device for disassembling a lower short shaft of a guide vane of a hydraulic generator according to an embodiment of the present utility model;
FIG. 2 is a schematic view of a structure of a lower stub shaft of a vane according to an embodiment of the present utility model;
FIG. 3 is a schematic view of a through-joint according to an embodiment of the present utility model;
in the accompanying drawings: the device comprises a 10-joint bearing, a 20-guide vane, a 30-guide vane lower short shaft, a 31-limiting part, a 32-connecting part, a 301-through hole, a 40-sealing cover, a 50-water guide mechanism inner guide ring, a 60-pressure oil pump and a 70-through joint.
Detailed Description
The following description provides many different embodiments, or examples, for implementing different features of the utility model. The elements and arrangements described in the following specific examples are presented for purposes of brevity and are provided only as examples and are not intended to limit the utility model.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
When the turbine runner of the unit is transformed, the movable guide vane 20 needs to be disassembled after the water guide mechanism is disassembled. Because the joint clearance between the short shaft joint bearing 10 at the lower part of the guide vane 20 and the guide vane 20 is small, the movable guide vane 20 is not disassembled after the unit is put into operation, so that rust occurs between the short shaft at the lower part of the guide vane 20 and the guide vane 20 after long-time operation, the disassembly difficulty is further increased, the unit is compact in structure, the field operation space is limited to a certain extent, and the disassembly difficulty of the short shaft at the lower part of the guide vane 20 is further increased.
Because the design clearance between the knuckle bearing 10 and the lower shaft sleeve of the guide vane 20 is 0.06-0.10mm, the fit clearance is small, the center adjustment of the dismounting device is poor, and the knuckle bearing 10 is easy to damage.
The inner guide ring 50 of the water guide mechanism is circular, and the periphery of the lower short shaft 30 of the guide vane is a cambered surface, so that the center of the device is difficult to adjust.
The dismounting device is poor in central adjustment, so that the stretching rod is subjected to radial shearing force while bearing axial tension, and is easy to break, safety threat exists for field workers, and the stretching rod is broken for multiple times during actual working.
Because the tension rod is stressed and inclined, the lifting force of the hydraulic jack is not concentric with the center of the short shaft of the guide vane 20, so that the joint bearing 10 receives an axial tension and a radial force at the same time, the friction force between the joint bearing 10 and the contact surface of the guide vane 20 is increased, the disassembly difficulty of the short shaft 30 under the guide vane is increased, and the construction period cannot be ensured.
The embodiment provides a structure for facilitating disassembly of a lower short shaft of a guide vane of a hydraulic generator, which is shown in fig. 1 and comprises a joint bearing 10, a guide vane 20, a lower short shaft 30 of the guide vane and a sealing cover 40;
the joint bearing 10 is externally connected with the guide vane 20;
one end in the knuckle bearing 10 is connected with the guide vane lower short shaft 30, and the other end is connected with the sealing cover 40;
the guide vane lower short shaft 30 is provided with a through hole 301 for disassembly.
Further, an internal thread is provided in the through hole 301.
When in use, the through hole 301 needs to be closed, so that the internal thread is arranged in the through hole 301, the bolt can be connected in a threaded mode, and the through hole is closed, and the through hole is simple in structure and easy to operate.
Meanwhile, when the guide vane lower short shaft 30 is detached, the threaded hole can be used for being connected with the pressure oil pump 60, and connection and detachment are more convenient.
Further, an end of the through hole 301 remote from the knuckle bearing 10 is provided with an internal thread.
The internal thread is arranged in the through hole 301, if the internal thread is arranged in the whole through hole 301, the requirement on the processing technology is higher, and the cost is increased; therefore, only the end of the through-hole 301 remote from the knuckle bearing 10 is provided with the female screw, so that not only can the seal be achieved, but also the connection with the pressure oil pump 60 is facilitated.
Further, a plurality of through holes 301 are provided. The plurality of through holes 301 can be filled with hydraulic oil at the same time, thereby improving the disassembly efficiency.
Further, a plurality of through holes 301 are uniformly provided on the guide vane lower stub shaft 30. The hydraulic oil filled is more uniform, so that the stress is uniform, the disassembly is more facilitated, and the joint bearing 10 is prevented from being damaged in the disassembly process.
Further, as shown in fig. 2, the guide vane lower stub shaft 30 includes a limiting portion 31 and a connecting portion 32, the limiting portion 31 and the connecting portion 32 are connected, and the connecting portion 32 is used for connecting with the knuckle bearing 10. Based on this, have simple structure, connect effectual advantage.
Further, the guide vane assembly further comprises a guide ring 50 in the guide mechanism, wherein the guide ring 50 in the guide mechanism is used for guiding water to the guide vane 20;
the connecting part 32 of the guide vane lower short shaft 30 passes through the inner guide ring 50 of the water guide mechanism to be connected with the knuckle bearing 10;
the limiting part 31 of the guide vane lower short shaft 30 is connected with the inner guide ring 50 of the water guide mechanism.
Further, the outer diameter of the connecting portion 32 is smaller than the outer diameter of the limiting portion 31.
Further, the sealing cover 40 is connected to the guide vane lower stub shaft 30.
Preferably, the sealing cover 40 is connected with the guide vane lower short shaft 30 through bolts.
The disassembly method comprises the following steps:
communicating the through hole 301 with the pressure oil pump 60;
hydraulic oil is filled between the sealing cover 40, the knuckle bearing 10 and the guide vane lower short shaft 30 through a pressure oil pump 60.
Before filling with hydraulic oil, the bolts attached to the lower stub shaft 30 of the guide vane need to be removed.
Further, hydraulic oil is filled through the pressure oil pump 60, a hydraulic pipe is arranged on the pressure oil pump 60, a through joint 70 is connected to the hydraulic pipe, and the through joint 70 is used for being connected with the through hole 301.
The dismounting device has simple structure and convenient operation, is suitable for quickly dismounting the guide vane lower short shaft 30 in the assembly of the large and medium-sized water turbine runner, and is safe, high-quality and efficient. Meanwhile, the dismounting device is simple in structure, occupies less space, can work in a narrow working space, can easily dismount the lower short shaft 30 of the guide vane, improves the working efficiency, and provides a convenient and effective solution for dismantlement of the lower short shaft 30 of the guide vane.
Further, as shown in fig. 3, both ends of the straight-through joint 70 are provided with external threads, and the middle part is provided with a boss; the arrangement of the boss is more beneficial to the use of operators; the internal threads on two sides are respectively connected with the hydraulic pipe and the through hole 301, so that the connection is convenient, and after the short shaft 30 under one guide vane is dismounted, the hydraulic pipe can be directly dismounted, and the hydraulic pipe is used for dismounting the short shaft 30 under the next guide vane, so that the dismounting efficiency is improved.
Although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (9)
1. The structure is characterized by comprising a knuckle bearing (10), a guide vane (20), a guide vane lower short shaft (30) and a sealing cover (40);
the joint bearing (10) is externally connected with the guide vane (20);
one end in the knuckle bearing (10) is connected with the guide vane lower short shaft (30), and the other end is connected with the sealing cover (40);
a through hole (301) for disassembly is formed in the guide vane lower short shaft (30).
2. A structure for facilitating the disassembly of the lower stub shaft of a hydro-generator vane as claimed in claim 1, wherein internal threads are provided in said through bore (301).
3. A structure for facilitating the disassembly of the lower stub shaft of a hydro-generator vane as claimed in claim 1, wherein the end of the through bore (301) remote from the knuckle bearing (10) is provided with an internal thread.
4. A structure for facilitating the disassembly of the stub shaft under the vane of a hydro-generator as claimed in any one of claims 1 to 3, wherein a plurality of through holes (301) are provided.
5. A structure for facilitating the disassembly of a stub shaft under a vane of a hydro-generator as defined in claim 4 wherein a plurality of through holes (301) are uniformly disposed on said stub shaft (30) under the vane.
6. A structure for facilitating disassembly of a stub shaft under a vane of a hydro-generator as claimed in claim 1, wherein the stub shaft under the vane (30) includes a limiting portion (31) and a connecting portion (32), the limiting portion (31) being connected to the connecting portion (32), the connecting portion (32) being adapted to be connected to the knuckle bearing (10).
7. The structure for facilitating disassembly of a stub shaft under a vane of a hydro-generator as defined in claim 6, further comprising a guide ring (50) within a water guide mechanism, said guide ring (50) within a water guide mechanism for guiding water to said vane (20);
the connecting part (32) of the guide vane lower short shaft (30) passes through the inner guide ring (50) of the water guide mechanism to be connected with the knuckle bearing (10);
the limiting part (31) of the guide vane lower short shaft (30) is connected with the inner guide ring (50) of the water guide mechanism.
8. A structure for facilitating the disassembly of the lower stub shaft of a hydro-generator vane as claimed in claim 7, wherein the outer diameter of the connecting portion (32) is smaller than the outer diameter of the limiting portion (31).
9. A structure for facilitating the disassembly of a stub shaft under a hydro-generator vane as claimed in claim 1 or 8 wherein said seal cap (40) is connected to said stub shaft under a vane (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321790262.3U CN220452083U (en) | 2023-07-07 | 2023-07-07 | Structure convenient to minor axis dismantles under hydraulic generator stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321790262.3U CN220452083U (en) | 2023-07-07 | 2023-07-07 | Structure convenient to minor axis dismantles under hydraulic generator stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220452083U true CN220452083U (en) | 2024-02-06 |
Family
ID=89734519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321790262.3U Active CN220452083U (en) | 2023-07-07 | 2023-07-07 | Structure convenient to minor axis dismantles under hydraulic generator stator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220452083U (en) |
-
2023
- 2023-07-07 CN CN202321790262.3U patent/CN220452083U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204771446U (en) | Volume of emboliaing shaft coupling dismounting device greatly | |
| CN220452083U (en) | Structure convenient to minor axis dismantles under hydraulic generator stator | |
| CN205465982U (en) | Tear stator frock open | |
| CN116838515A (en) | Structure and method for facilitating disassembly of lower short shaft of guide vane of hydraulic generator | |
| CN202914397U (en) | Guide vane main feed water pump for nuclear power plant conventional island | |
| CN205490034U (en) | Set sub - frock | |
| CN102013764B (en) | Device for changing slip ring of motor | |
| CN110861038A (en) | Disassembling tool for low-pressure final-stage impeller balance bolt of steam turbine and using method | |
| CN214980738U (en) | Novel bearing is dismantled device | |
| CN202417965U (en) | Well electric submersible pump | |
| CN104235201A (en) | Coupling bolt connection structure | |
| CN211220537U (en) | Extracting tool of steam turbine low pressure final stage impeller balance bolt | |
| CN201437231U (en) | Wedge type wheel puller | |
| CN203939880U (en) | A kind of coupling bolt modular construction | |
| CN209062504U (en) | Fluid coupling draw-off gear | |
| CN205148215U (en) | Frock is dismantled to non - drive end bearing of double bracing pump | |
| CN213419484U (en) | Energy-saving emission-reducing spiral fluid turbine pump | |
| CN210724519U (en) | Submersible motor assembly and oil gas extraction device thereof | |
| CN219053510U (en) | Device for disassembling generator shafting in narrow space | |
| CN204603722U (en) | Rotary wheel of water turbine blade pivot copper bushing dismounting device | |
| CN214025502U (en) | Hydroelectric set stator copper sheathing extracting tool | |
| CN212794803U (en) | Press mounting device for guide vane shaft sleeve of water turbine | |
| CN208518969U (en) | The handler of water supply pump | |
| CN206230223U (en) | Provision for disengagement for dismantling stop pin | |
| CN218816721U (en) | Oil throwing prevention device used between thrust head and sealing cover of hydraulic generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |