CN202203026U - Main shaft sealing device of horizontal water turbine - Google Patents
Main shaft sealing device of horizontal water turbine Download PDFInfo
- Publication number
- CN202203026U CN202203026U CN2011201545661U CN201120154566U CN202203026U CN 202203026 U CN202203026 U CN 202203026U CN 2011201545661 U CN2011201545661 U CN 2011201545661U CN 201120154566 U CN201120154566 U CN 201120154566U CN 202203026 U CN202203026 U CN 202203026U
- Authority
- CN
- China
- Prior art keywords
- water
- main shaft
- labyrinth
- cover plate
- reverse thread
- 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.)
- Expired - Lifetime
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Classifications
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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
Abstract
The utility model discloses a main shaft sealing device of a horizontal water turbine. The main shaft sealing device comprises a rotating wheel crown, a labyrinth cover plate, a water sealing ring, a water tank, a water sealing end cover, a reverse thread bushing, a drainage pipe and the like; the rotating wheel crown and the labyrinth cover plate are provided with labyrinth rings and are mutually engaged; the reverse thread bushing and a main shaft heating jacket are fastened to form a whole and sleeved in the water sealing ring to form a clearance passage, and the water sealing ring is fixedly connected with the labyrinth cover plate; and two ends of the tank body of the water tank are respectively connected with the labyrinth cover plate and the water sealing end cover, and the drainage pipe is arranged in the tank body. The sealing device has simple structure, and can fulfill the purposes of sealing a main shaft and avoiding abrasion and water leakage in the absence of a sealing member.
Description
Technical field
The utility model belongs to mechanical field, relates to the main shaft sealing device of horizontal water turbine, be with the horizontal water turbine normal course of operation in main shaft press water sealing device structure relevant.
Background technique
At present; Sealing configurations such as the sealing of rubber piston press water, asbestos packing sealing, the sealing of nylon block press water are generally adopted in the sealing of domestic horizontal water turbine main shaft press water, because there is Sealing in these sealing configurations when equipment operation and the main shaft contact position is easy to wear, the easy aging regular many shortcomings such as replacing, the extraneous logical cleaning pressure water of needs, no measures to reduce stresses, the main shaft water leakage is big when moving, sealability is bad of shutting down that need of Sealing.
The model utility content
The utility model is to overcome the deficiency that existing horizontal water turbine main shaft sealing construction exists, and a kind of brand-new contactless main shaft sealing device structure is provided, and does not need Sealing, just can realize that main shaft seal does not have wearing and tearing, do not have the purpose of leaking.
The utility model technological scheme that is adopted of dealing with problems is: a kind of main shaft sealing device of horizontal water turbine; It comprises runner crown, labyrinth cover plate, water shutoff circle, holds water tank, water shutoff end cap, reverse thread cover, waste pipe etc.; Said runner crown and labyrinth cover plate are equipped with labyrinth ring, and are meshing with each other; Said reverse thread cover is integrally formed with the main shaft hot jacket is fastening, is sleeved on to constitute clearance channel in the water shutoff circle, and water shutoff circle and labyrinth cover plate are fixedly connected; The casing of said appearance water tank is connected with labyrinth cover plate and water shutoff end cap respectively by tank ends and constitutes, and casing is provided with waste pipe.
The monolateral gap of labyrinth ring between described runner crown and the labyrinth cover plate is 0.5～1mm; It is 0.4～0.5mm that the reverse thread cover cooperates monolateral gap with water shutoff circle endoporus; Water shutoff end cap endoporus cooperates monolateral gap with main shaft be 1～1.5mm, and cooperating monolateral gap with reverse thread cover endoporus is 1～1.5mm.
In the utility model, intermeshing runner crown and labyrinth cover plate carry out the decompression of first road to press water; The reverse thread cover carries out the decompression of second road with the clearance channel that the water shutoff circle constitutes to press water; Hold the waste pipe that water tank is welded with, post-decompression press water is discharged.When equipment operation; The main shaft press water that the water impact runner forms; Labyrinth ring multiple tracks decompression through runner crown and labyrinth cover plate; Get into the reverse thread cover and receive the prevention of reverse thread to continue decompression with the clearance channel that the water shutoff circle constitutes, post-decompression press water is stopped by the water shutoff end cap again and the main axis rotation centrifugal action falls into to hold in the water tank and discharges through waste pipe.The sealing apparatus structure is simple, does not need Sealing, just can realize that main shaft seal does not have wearing and tearing and do not have the purpose of leaking.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is the main shaft sealing construction figure of HLA616-WJ-96 horizontal water turbine.
Embodiment
With reference to Fig. 1, this main shaft sealing device comprises runner crown 1, labyrinth cover plate 2, reverse thread cover 3, water shutoff circle 4, holds water tank 5, water shutoff end cap 6, waste pipe 7, and its structure and dimensional parameters are following:
Runner crown 1: external diameter is Φ 800mm; The labyrinth tooth root is of a size of: 10.5mm (wide) * 13mm (deeply); The labyrinth teeth groove is of a size of: 12.5mm (wide) * 13mm (deeply); Labyrinth quantity is 2.
Labyrinth cover plate 2: the labyrinth tooth root is of a size of: 10.5mm (wide) * 15mm (deeply); The labyrinth teeth groove is of a size of: 12.5mm (wide) * 15mm (deeply); The labyrinth degree of depth is than the long 2mm of runner crown, and the degree of depth that is meshing with each other is 10mm; Labyrinth quantity is 2.
Reverse thread cover 3: reverse thread is of a size of T270 * 10-L, and orifice size is that Φ 215 is 0.05～0.15mm with the main shaft magnitude of interference, and macropore is of a size of Φ 248mm, with the monolateral gap 1～1.5mm of water shutoff end cap.
Water shutoff circle 4: diameter of bore is Φ 271mm, forms the matching gap of monolateral 0.5mm with reverse thread thread die cutting size.
Hold water tank 5: hold the tank box two ends and connect with hexagon head bolt with labyrinth cover plate and water shutoff end cap respectively.
Water shutoff end cap 6: the water shutoff end cap with hold the water tank assembling, diameter of bore is Φ 223mm (with the monolateral 1～1.5mm of main shaft gap), overlap with reverse thread that to cooperate outside dimension be Φ 245mm.
" common steel tube is an one with holding tank weld to waste pipe 7: be of a size of G3, is positioned under the water turbine Vertical direction.
Runner crown 1 is equipped with labyrinth ring with labyrinth cover plate 2, and is meshing with each other, and press water is carried out the decompression of first road; Reverse thread cover 3 is integrally formed with the main shaft hot jacket is fastening, is sleeved on to constitute clearance channel in the water shutoff circle 4, and water shutoff circle 4 usefulness bolts and labyrinth cover plate are fixedly connected, and press water is carried out second road reduce pressure; Hold water tank 5 and be made up of with labyrinth cover plate and water shutoff end cap 6 usefulness Bolt Connection respectively tank ends, casing is welded with a waste pipe 7, and post-decompression press water is discharged.
When equipment operation; The main shaft press water that the water impact runner forms; Through the labyrinth ring multiple tracks decompression of runner crown 1 with labyrinth cover plate 2; Get into reverse thread cover 3 and receive the prevention of reverse thread to continue decompression with the clearance channel that water shutoff circle 4 constitutes, post-decompression press water is stopped by water shutoff end cap 6 again and the main axis rotation centrifugal action falls into to hold in the water tank 5 and discharges through waste pipe 7.Sealing is simple in structure, does not need Sealing, just can realize that main shaft does not have wearing and tearing, do not have the purpose of leaking.
Claims (2)
1. the main shaft sealing device of a horizontal water turbine; It is characterized in that: it comprises runner crown, labyrinth cover plate, water shutoff circle, holds water tank, water shutoff end cap, reverse thread cover, waste pipe; Said runner crown and labyrinth cover plate are equipped with labyrinth ring, and are meshing with each other; Said reverse thread cover is integrally formed with the main shaft hot jacket is fastening, is sleeved on to constitute clearance channel in the water shutoff circle, and water shutoff circle and labyrinth cover plate are fixedly connected; The casing of said appearance water tank is connected with labyrinth cover plate and water shutoff end cap respectively by tank ends and constitutes, and casing is provided with waste pipe.
2. the main shaft sealing device of horizontal water turbine according to claim 1, it is characterized in that: the monolateral gap of labyrinth ring between described runner crown and the labyrinth cover plate is 0.5～1mm; It is 0.4～0.5mm that the reverse thread cover cooperates monolateral gap with water shutoff circle endoporus; Water shutoff end cap endoporus cooperates monolateral gap with main shaft be 1～1.5mm, and cooperating monolateral gap with reverse thread cover endoporus is 1～1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201545661U CN202203026U (en) | 2011-05-13 | 2011-05-13 | Main shaft sealing device of horizontal water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201545661U CN202203026U (en) | 2011-05-13 | 2011-05-13 | Main shaft sealing device of horizontal water turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202203026U true CN202203026U (en) | 2012-04-25 |
Family
ID=45967149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201545661U Expired - Lifetime CN202203026U (en) | 2011-05-13 | 2011-05-13 | Main shaft sealing device of horizontal water turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202203026U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132139A (en) * | 2013-11-22 | 2014-11-05 | 成都科创佳思科技有限公司 | Main shaft sealing structure for water turbine |
-
2011
- 2011-05-13 CN CN2011201545661U patent/CN202203026U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132139A (en) * | 2013-11-22 | 2014-11-05 | 成都科创佳思科技有限公司 | Main shaft sealing structure for water turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120425 |
|
| CX01 | Expiry of patent term |