CN112855405A - Sealing device for guide vane sleeve of water turbine - Google Patents
Sealing device for guide vane sleeve of water turbine Download PDFInfo
- Publication number
- CN112855405A CN112855405A CN202110212020.5A CN202110212020A CN112855405A CN 112855405 A CN112855405 A CN 112855405A CN 202110212020 A CN202110212020 A CN 202110212020A CN 112855405 A CN112855405 A CN 112855405A
- Authority
- CN
- China
- Prior art keywords
- guide vane
- sleeve
- axle
- arm assembly
- base
- 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.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
- F03B3/16—Stators
- F03B3/18—Stator blades; Guide conduits or vanes, e.g. adjustable
- F03B3/183—Adjustable vanes, e.g. wicket gates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Turbines (AREA)
Abstract
The invention discloses a sealing device for a guide vane sleeve of a water turbine, which relates to the field of water turbine power generation and comprises a base (1), a top cover (2), a sleeve (3), a guide vane shaft (4) and a guide vane arm assembly (5), wherein the top cover (2) is arranged at the upper end of the base (1), one end of the sleeve (3) is arranged on the lower end face of the base (1), the other end of the sleeve is pressed on the upper end face of the top cover (2), the guide vane shaft (4) is arranged in the sleeve (3), the upper end and the lower end of the guide vane shaft (4) penetrate through the sleeve (3), the guide vane arm assembly (5) is connected to the upper end of the guide vane shaft (4), a protective cover (6) is arranged between the guide vane arm assembly (5) and the top cover (2), and a plurality of shaft sleeves (7) and a plurality of sealing washers (8) are arranged between the guide. The invention has the advantages of simple structure, convenient installation, good sealing effect and fault processing time saving.
Description
Technical Field
The invention relates to the field of water turbine power generation, in particular to a sealing device for a guide vane sleeve of a water turbine.
Background
The water leakage accident caused by the failure of the sealing material of the guide vane sleeve of the water turbine is not endless, and the research on the sealing material and the process structure of the guide vane sleeve of the water turbine also becomes the focus of attention of many researchers. Inside upper portion axle bush of hydraulic turbine stator axle sleeve and middle part axle bush all adopt the composite bed steel backing tile that has self-lubricating function, the lower extreme of middle part axle bush adopts the sealing washer to seal water simultaneously, in the long-time operation of unit, along with the reciprocating rotation of stator (about 64 degrees of operation angle) seal up the damage and cause the water in the river to leak into the top cap from top cap and stator axle journal, cause water logging top cap and water guide bearing, rivers also can directly spout in the fit clearance of turning arm and axle sleeve and go out simultaneously, thereby the thorn arouses hydroelectric set accident shutdown loss at each position of top cap, thereby disclose a hydraulic turbine stator sleeve sealing device as the patent of application number CN201611063633.2, just there is above problem. If the seal is replaced, the unit needs to be shut down, and measures such as volute drainage and the like need to be taken, so that the unit can be shut down unplanned. Handling this defect requires volute drainage: if the water needs to be drained from the volute, the water turbine generator set needs to be withdrawn for standby, the set flow channel access door is fallen down, the disc valve is opened, the time is long, in the main flood season, the volute drains water to enable the set to be withdrawn for standby possibly to cause water abandonment, a large amount of economic loss is brought to a power plant, and under the current situation that the requirement on the reliability of the generator set is higher and higher, the power grid dispatching can also conduct unplanned outage check on the power plant.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the sealing device for the guide vane sleeve of the water turbine, which has the advantages of simple structure, convenience in installation and good sealing effect.
The purpose of the invention is realized by the following technical scheme: the utility model provides a hydraulic turbine stator sleeve sealing device, includes base, top cap, sleeve, guide vane axle and guide vane arm subassembly, the upper end of base is provided with the top cap, telescopic one end sets up the lower terminal surface at the base, and telescopic other end is pressed at the up end of top cap, the guide vane axle sets up in the sleeve, and the sleeve is worn out at the upper and lower end both ends of guide vane axle, the upper end of guide vane axle is connected with guide vane arm subassembly, be provided with the protection casing between guide vane arm subassembly and the top cap, be provided with a plurality of axle sleeves and a plurality of seal ring between guide vane axle and the sleeve.
The two shaft sleeves and the two sealing gaskets are respectively arranged between the guide vane shaft and the outer surface of the upper end of the sleeve and between the guide vane shaft and the outer surface of the lower end of the sleeve.
A lip-shaped sealing ring is arranged between the protective cover and the guide vane arm component.
The protective cover and the top cover are connected in a bolt connection mode.
The protective cover is formed by connecting two semicircular flange plates.
The invention has the following advantages: simple to operate, it is quick, can utilize the unit to shut down the state when the seepage appears in the sealed leakage of stator sleeve end cover, can accomplish the installation within 1 hour, utilize the device to install fast, will leak and carry out the shutoff, make the unit can normal operating, handle rapidly, save time.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of portion A of the present invention;
FIG. 3 is an enlarged view of section B of the present invention;
FIG. 4 is a cross-sectional view of a shield of the present invention;
in the figure: the guide vane structure comprises a base 1, a top cover 2, a sleeve 3, a guide vane shaft 4, a guide vane arm assembly 5, a protective cover 6, a shaft sleeve 7, a sealing washer 8 and a lip-shaped sealing washer 9.
Detailed Description
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following.
As shown in fig. 1, a hydraulic turbine guide vane sleeve sealing device includes a base 1, a top cover 2, a sleeve 3, a guide vane shaft 4 and a guide vane arm assembly 5, the upper end of the base 1 is provided with the top cover 2, one end of the sleeve 3 is arranged on the lower end face of the base 1, the other end of the sleeve 3 is pressed on the upper end face of the top cover 2, the guide vane shaft 4 is arranged in the sleeve 3, the upper end and the lower end of the guide vane shaft 4 penetrate through the sleeve 3, the relative position between the base 1, the top cover 2 and the sleeve 3 is fixed, the guide vane shaft 4 can rotate in the sleeve 3, the upper end of the guide vane shaft 4 is connected with the guide vane arm assembly 5, the guide vane arm assembly 5 rotates along with the rotation of the guide vane shaft 4, a protective cover 6 is arranged between the guide vane arm assembly 5 and the top cover 2, and a plurality of shaft sleeves 7 and a plurality of sealing washers 8.
The two shaft sleeves 7 and the two sealing gaskets 8 are respectively arranged between the guide vane shaft 4 and the outer surface of the upper end of the sleeve 3 and between the guide vane shaft 4 and the outer surface of the lower end of the sleeve 3.
The protection casing 6 is formed by connecting two semicircular flange plates provided with connecting lugs, and rubber sealing is clamped between adjacent connecting lugs, and the adjacent connecting lugs are connected in a bolt connection mode.
The protection casing 6 is provided with the square seal groove along circumference, is provided with lip seal 9 in the square seal groove, and lip seal 9 and pivoted stator arm subassembly 5 use sealed glue to bond together, and under operating condition, system pressure is used at sealed lip position, has increased the contact stress of honeybee contact surface and sealed face, and special lip design, corresponding weakens the lip thickness, can greatly promote the perception straingability to pressure variation for leak can not follow the seepage in the combined surface.
The lower part of the protective cover 6 is provided with a rubber seal and is connected with the top cover 2 in a bolt connection mode.
The installation process of the invention is as follows: selecting a rubber sealing plate, gluing the rubber sealing plate into a whole circle, placing the whole circle on the upper end face of the top cover 2, drilling and tapping corresponding positions on the top cover, simultaneously sleeving the lip-shaped sealing ring 9 on the guide vane arm assembly 5 and adopting sealant for bonding, aligning the connecting lugs of the two flange plates, splicing the connecting lugs from the outside into a whole circle, sleeving the square sealing groove on the flange plates on the lip-shaped sealing ring 9, and screwing the bolts on the connecting lugs and the bolts below the protective cover 6.
Claims (5)
1. The utility model provides a hydraulic turbine stator sleeve sealing device which characterized in that: including base (1), top cap (2), sleeve (3), guide vane axle (4) and guide vane arm assembly (5), the upper end of base (1) is provided with top cap (2), the one end setting of sleeve (3) is at the lower terminal surface of base (1), and the up end at top cap (2) is pressed to the other end of sleeve (3), guide vane axle (4) set up in sleeve (3), and sleeve (3) are worn out at the upper and lower end both ends of guide vane axle (4), the upper end of guide vane axle (4) is connected with guide vane arm assembly (5), be provided with protection casing (6) between guide vane arm assembly (5) and top cap (2), be provided with a plurality of axle sleeves (7) and a plurality of seal ring (8) between guide vane axle (4) and sleeve (3).
2. The turbine vane sleeve seal assembly of claim 1, further comprising: the two shaft sleeves (7) and the two sealing gaskets (8) are respectively arranged between the outer surfaces of the upper ends of the guide vane shafts (4) and the sleeves (3) and between the outer surfaces of the lower ends of the guide vane shafts (4) and the sleeves (3).
3. The turbine vane sleeve seal assembly of claim 1, further comprising: a lip-shaped sealing ring (9) is arranged between the protective cover (6) and the guide vane arm assembly (5).
4. The turbine vane sleeve seal assembly of claim 1, further comprising: the protective cover (6) is connected with the top cover (2) in a bolt connection mode.
5. The turbine vane sleeve seal assembly of claim 1, further comprising: the protective cover (6) is formed by connecting two semicircular flange discs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110212020.5A CN112855405A (en) | 2021-02-25 | 2021-02-25 | Sealing device for guide vane sleeve of water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110212020.5A CN112855405A (en) | 2021-02-25 | 2021-02-25 | Sealing device for guide vane sleeve of water turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112855405A true CN112855405A (en) | 2021-05-28 |
Family
ID=75989944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110212020.5A Pending CN112855405A (en) | 2021-02-25 | 2021-02-25 | Sealing device for guide vane sleeve of water turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112855405A (en) |
-
2021
- 2021-02-25 CN CN202110212020.5A patent/CN112855405A/en active Pending
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