CN220060516U - Main shaft sealing device of water turbine - Google Patents
Main shaft sealing device of water turbine Download PDFInfo
- Publication number
- CN220060516U CN220060516U CN202321491808.5U CN202321491808U CN220060516U CN 220060516 U CN220060516 U CN 220060516U CN 202321491808 U CN202321491808 U CN 202321491808U CN 220060516 U CN220060516 U CN 220060516U
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- China
- Prior art keywords
- main shaft
- hydraulic turbine
- turbine main
- water turbine
- sealing
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 88
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 238000007664 blowing Methods 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 description 4
- 241000883990 Flabellum Species 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
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- Hydraulic Turbines (AREA)
Abstract
The utility model discloses a water turbine main shaft sealing device, which belongs to the technical field of hydropower station equipment and comprises a base, a sealing cover and an air blast piece, wherein the base and the sealing cover are sleeved on a water turbine main shaft and are tightly connected with each other, a sealing ring is arranged on the base, the sealing ring is sleeved on the water turbine main shaft, an air bag is arranged on the periphery of the sealing ring, and the air blast piece is sleeved on the water turbine main shaft and is positioned in the sealing cover and can blow air to the air bag under the driving of the water turbine main shaft. The wind power generated by the air blowing piece blows into the air bag, so that the air bag always keeps an expansion state to extrude the sealing ring, the sealing ring can be always clung to the main shaft of the water turbine, the gap between the main shaft of the water turbine and the sealing ring is reduced, the leakage of the sealing sleeve is prevented, and the water is prevented from entering a pit to damage the water turbine.
Description
Technical Field
The utility model relates to the technical field of hydropower station equipment, in particular to a spindle sealing device of a water turbine.
Background
The water turbine is a power machine which converts the energy of water flow into rotary mechanical energy, and belongs to the turbine machinery in fluid machinery. The hydraulic turbines can be divided into two main types of impulse hydraulic turbines and reaction hydraulic turbines according to the working principle. The runner of the impulse turbine is impacted by water flow to rotate, and the pressure of the water flow is unchanged in the working process, mainly the conversion of kinetic energy; the runner of the reaction turbine is rotated by the reaction force of water flow in water, and the pressure energy and the kinetic energy of the water flow are changed in the working process, but the pressure energy is mainly converted. The water turbine is composed of a valve, a volute, a water guide vane, a rotating wheel, a draft tube and the like. The water flows out through the valve, the volute, the water guide vane, the rotating wheel and the draft tube to drive the rotating wheel to rotate. The rotating wheel drives the generator rotor to rotate in the stator through the main shaft and the bearing, so that the rotor becomes a rotating magnetic field, the stator coil makes motion of cutting magnetic force lines, thereby generating induction potential, generating current to generate electricity, and converting potential energy of water into electric energy.
When the main shaft of the water turbine rotates for a long time, a small amount of water leakage can be generated at the joint of the rotating wheel and the main shaft in operation, the gap between the sealing ring and the main shaft of the water turbine can be larger and larger under the cavitation effect, and the water leakage can enter a pit along the gap between the main shaft of the water turbine and the sealing ring, so that the water turbine cannot normally operate, and the water turbine is damaged.
Disclosure of Invention
The utility model mainly aims to provide a main shaft sealing device of a water turbine, which aims to keep a sealing ring tightly attached to the main shaft of the water turbine and reduce the gap between the main shaft of the water turbine and the sealing ring.
In order to achieve the above purpose, the main shaft sealing device of the water turbine provided by the utility model comprises a base, a sealing cover and an air blast piece, wherein the base and the sealing cover are sleeved on the main shaft of the water turbine and are tightly connected with each other, the base is provided with a sealing ring, the sealing ring is sleeved on the main shaft of the water turbine, an air bag is arranged at the periphery of the sealing ring, and the air blast piece is sleeved on the main shaft of the water turbine and is positioned in the sealing cover and can blow air to the air bag under the driving of the main shaft of the water turbine. Further, wind power generated by the air blowing piece blows into the air bag, so that the air bag always keeps an expanded state to squeeze the sealing ring, and the sealing ring can always cling to the main shaft of the water turbine.
Optionally, a first accommodating groove is formed in the base, and the air bag and the sealing ring are arranged in the first accommodating groove.
Optionally, a positioning groove is formed in the bottom of the first accommodating groove, a boss is arranged on the sealing ring, and the boss is clamped in the positioning groove. Further, the sealing ring is prevented from swinging under the influence of the main shaft of the water turbine.
Optionally, a second accommodating groove is formed in the sealing cover, and the air blowing piece is located in the second accommodating groove.
Optionally, the blast member includes go-between and a plurality of flabellum, the go-between cover is established on the hydraulic turbine main shaft, a plurality of flabellums are along the go-between outer circumference sets up.
Optionally, a channel is formed on the sealing cover, and the channel is communicated with the second accommodating groove.
Optionally, the sealing cover is provided with a clamping column, and the clamping column is provided with threads.
Optionally, a sliding groove is formed in the base, and the clamping column penetrates through the sliding groove and can move in the sliding groove.
Optionally, a positioning hole is formed in one end of the sliding groove, a positioning piece is arranged on the clamping column, and the positioning piece penetrates through the positioning hole.
Optionally, an inflation inlet is formed on the air bag, and the inflation inlet is aligned with the channel. Further, wind power generated by rotation of the air blowing member enters the air charging port through the passage.
Compared with the prior art, the utility model has the following beneficial effects:
the hydraulic turbine main shaft sealing device is provided with a base, a sealing cover and an air blast piece, wherein the base and the sealing cover are sleeved on the hydraulic turbine main shaft and are tightly connected with each other, the base is provided with a sealing ring, the sealing ring is sleeved on the hydraulic turbine main shaft, an air bag is arranged on the periphery of the sealing ring, and the air blast piece is sleeved on the hydraulic turbine main shaft and is positioned in the sealing cover and can blow air to the air bag under the driving of the hydraulic turbine main shaft. The wind power generated by the air blowing piece blows into the air bag, so that the air bag always keeps an expansion state to extrude the sealing ring, the sealing ring can be always clung to the main shaft of the water turbine, the gap between the main shaft of the water turbine and the sealing ring is reduced, the leakage of the sealing sleeve is prevented, and the water is prevented from entering a pit to damage the water turbine.
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 only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an embodiment of a spindle seal assembly for a hydraulic turbine according to the present utility model;
FIG. 2 is an exploded view of one embodiment of a hydraulic turbine main shaft seal assembly of the present utility model;
FIG. 3 is an exploded view of the seal ring and bladder mounted to the base;
FIG. 4 is a schematic view of the seal cap of FIG. 2;
fig. 5 is a side cross-sectional view of the seal cap.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the 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.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The utility model provides a main shaft sealing device 100 of a water turbine.
Referring to fig. 1-5, in an embodiment of the present utility model, the main shaft sealing device 100 of a hydraulic turbine includes a base 10, a sealing cover 20 and a blower 50, wherein the base 10 and the sealing cover 20 are both sleeved on the main shaft 1 of the hydraulic turbine and are tightly adhered to each other, a sealing ring 30 is disposed on the base 10, the sealing ring 30 is sleeved on the main shaft 1 of the hydraulic turbine, an air bag 40 is disposed on the periphery of the sealing ring 30, the blower 50 is sleeved on the main shaft 1 of the hydraulic turbine and is located in the sealing cover 20, and the blower 50 can rotate together with the main shaft 1 of the hydraulic turbine to generate wind and blow the wind to the air bag 40.
In an embodiment of the present utility model, the base 10 is provided with a first accommodating groove 11, the diameter of the first accommodating groove 11 is larger than the outer diameter of the main shaft 1 of the water turbine, so that the air bag 40 can be installed in the first accommodating groove 11, the bottom of the first accommodating groove 11 is provided with a positioning groove 12, the sealing ring 30 is provided with a boss 31, and the boss 31 is clamped in the positioning groove 12, so that the sealing ring 30 can be prevented from swinging under the influence of the main shaft 1 of the water turbine.
In this embodiment, the sealing ring 30 is made of rubber, the sealing ring 30 is pressed against the main shaft 1 of the water turbine under the extrusion of the air bag 40, so as to reduce the gap between the main shaft 1 of the water turbine and the base 10, and prevent the leakage of the sealing sleeve, thereby ensuring the normal operation of the main shaft 1 of the water turbine.
In an embodiment of the present utility model, the sealing cover 20 is provided with a second accommodating groove 21, and the air blowing member 50 is located in the second accommodating groove 21, wherein the air blowing member 50 includes a connection ring 51 and a plurality of fan blades 52, the connection ring 51 is sleeved on the main shaft 1 of the water turbine, and the plurality of fan blades 52 are disposed along the outer circumference of the connection ring 51. The sealing cover 20 is provided with a channel 22, the channel 22 is communicated with the second accommodating groove 21, the air bag 40 is provided with an inflation inlet 41, and the inflation inlet 41 is aligned with the channel 22. It will be appreciated that when the connecting ring 51 is driven by the main shaft 1 of the water turbine, the fan blades 52 can be driven to rotate, and when the fan blades 52 rotate, wind force is generated, and the wind blows through the channel 22 into the air bag 40, so that the air bag 40 always keeps the expansion state to press the sealing ring 30, the sealing ring 30 always keeps the state of being tightly attached to the main shaft 1 of the water turbine, and the cavitation is reduced to increase the gap between the main shaft 1 of the water turbine and the base 10.
In this embodiment, the channel 22 is hollow conical, with the small open end facing the airbag 40 and aligned with the inflation port 41, and the large open end facing the blower 50, to collect large area of incoming air into the inflation port 41.
In an embodiment of the present utility model, the sealing cover 20 is provided with a positioning post 23, the base 10 is provided with a sliding groove 13, the positioning post 23 passes through the sliding groove 13 and can move in the sliding groove 13, one end of the sliding groove 13 is provided with a positioning hole 14, the diameter of the positioning hole 14 is larger than the width of the sliding groove 13, the positioning post 14 is provided with a positioning piece 60, and the positioning piece 60 passes through the positioning hole 14, so that the base 10 and the sealing cover 20 are tightly connected together.
In this embodiment, the clamping post 23 is provided with a thread, the positioning member 60 includes a post 61 and a semicircular table 62, the post 61 is internally threaded, and the post 61 and the clamping post 23 are connected together by the thread. The diameter of the positioning hole 14 is identical to the outer diameter of the semicircular table 62, the number of the sliding grooves 13 is two, the number of the clamping posts 23 and the positioning holes 14 is two correspondingly, the two sliding grooves 13 are arc-shaped, and the directions of the two sliding grooves 13 are opposite. It may be appreciated that the positioning member 60 is mounted on the positioning posts 23, the two positioning posts 23 are aligned with the two positioning holes 14 respectively, the half round platform 62 passes through the positioning holes 14 and is exposed out of the base 10, then the base 10 is rotated, the positioning posts 23 at two ends are respectively moved along the sliding grooves 13, the half round platform 62 is staggered with the positioning holes 14, and then the positioning member 60 is screwed tightly to realize the connection between the base 10 and the sealing cover 20, and the assembly and the disassembly are convenient.
Working principle: the base 10, the sealing cover 20 and the air blowing member 50 are respectively sleeved on the main shaft 1 of the water turbine, the positioning member 60 passes through the positioning hole 14, then the base 10 is rotated to enable the positioning hole 14 to be staggered with the semicircular table 62, the positioning member 60 is screwed down to finish the connection between the base 10 and the sealing cover 20, when the main shaft 1 of the water turbine runs, the connecting ring 51 drives the fan blades 52 to rotate to generate wind force, the wind blows into the air bag 40 through the channel 22, the air bag 40 always keeps an expanded state to squeeze the sealing ring 30, the sealing ring 30 always clings to the main shaft 1 of the water turbine, gaps between the main shaft 1 of the water turbine and the base 10 are reduced, and leakage of the sealing sleeve is prevented from affecting normal operation of the water turbine.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (10)
1. The utility model provides a hydraulic turbine main shaft sealing device, its characterized in that includes base, sealed lid and blast member, the base with sealed lid all overlaps to establish on the hydraulic turbine main shaft and both zonulae occludens, be equipped with the sealing washer on the base, the sealing washer snare is established on the hydraulic turbine main shaft, the sealing washer periphery is equipped with the gasbag, the blast member cover is established hydraulic turbine main shaft is last and be located sealed lid, and can be under the drive of receiving the hydraulic turbine main shaft to the gasbag blows.
2. The hydraulic turbine main shaft sealing apparatus of claim 1 wherein: the base is provided with a first accommodating groove, and the air bag and the sealing ring are arranged in the first accommodating groove.
3. The hydraulic turbine main shaft sealing apparatus of claim 2 wherein: the positioning groove is formed in the bottom of the first accommodating groove, a boss is arranged on the sealing ring, and the boss is clamped in the positioning groove.
4. A hydraulic turbine main shaft sealing apparatus as claimed in claim 3, wherein: the sealing cover is provided with a second accommodating groove, and the air blowing piece is positioned in the second accommodating groove.
5. The hydraulic turbine main shaft sealing apparatus of claim 4 wherein: the blast part comprises a connecting ring and a plurality of fan blades, the connecting ring is sleeved on the main shaft of the water turbine, and the fan blades are arranged along the outer circumference of the connecting ring.
6. The hydraulic turbine main shaft sealing apparatus of claim 5 wherein: and the sealing cover is provided with a channel which is communicated with the second accommodating groove.
7. The hydraulic turbine main shaft sealing apparatus of claim 1 wherein: the sealing cover is provided with a clamping column, and the clamping column is provided with threads.
8. The hydraulic turbine main shaft sealing apparatus of claim 7 wherein: the base is provided with a sliding groove, and the clamping column penetrates through the sliding groove and can move in the sliding groove.
9. The hydraulic turbine main shaft sealing apparatus of claim 8 wherein: one end of the sliding groove is provided with a positioning hole, the clamping column is provided with a positioning piece, and the positioning piece penetrates through the positioning hole.
10. The hydraulic turbine main shaft sealing apparatus of claim 6 wherein: an inflation inlet is formed in the air bag and aligned with the channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321491808.5U CN220060516U (en) | 2023-06-13 | 2023-06-13 | Main shaft sealing device of water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321491808.5U CN220060516U (en) | 2023-06-13 | 2023-06-13 | Main shaft sealing device of water turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220060516U true CN220060516U (en) | 2023-11-21 |
Family
ID=88755303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321491808.5U Active CN220060516U (en) | 2023-06-13 | 2023-06-13 | Main shaft sealing device of water turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220060516U (en) |
-
2023
- 2023-06-13 CN CN202321491808.5U patent/CN220060516U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |