CN112324603B - Water turbine main shaft sealing method - Google Patents
Water turbine main shaft sealing method Download PDFInfo
- Publication number
- CN112324603B CN112324603B CN202011287288.7A CN202011287288A CN112324603B CN 112324603 B CN112324603 B CN 112324603B CN 202011287288 A CN202011287288 A CN 202011287288A CN 112324603 B CN112324603 B CN 112324603B
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- China
- Prior art keywords
- sealing
- ring
- umbrella
- water
- main shaft
- 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 - Fee Related
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 123
- 238000007789 sealing Methods 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 238000003466 welding Methods 0.000 claims abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract description 13
- 230000000694 effects Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
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
- 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
- F03B11/006—Sealing arrangements
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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
- F03B11/06—Bearing arrangements
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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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
A method for sealing a main shaft of a water turbine comprises the following steps of installing a sealing bearing on the main shaft of the water turbine, turning an annular groove on the main shaft on one side of the sealing bearing, manufacturing an umbrella-shaped water guide ring, installing a sealing ring in the annular groove, clamping two semicircular umbrella-shaped water guide rings in the annular groove, and welding or clamping to enable the umbrella-shaped water guide rings to be integrally sealed without water leakage; a sealing ring is arranged on the other side of the umbrella-shaped water guide ring; manufacturing an outer shell, wherein one end of the outer shell is fixed on an outer ring of a sealing bearing, and the other end of the outer shell is in sliding fit with the sealing ring; the edge end of the umbrella-shaped water guide ring corresponds to the back hook end of the shell to form a water receiving ring, and the bottom of the shell is provided with a water outlet pipe; an air inlet is arranged on the shell close to the sealing bearing, and an air outlet is arranged on the shell at the upper part of the sealing ring; the air outlet is provided with a blocking plate, the blocking plate is provided with a sliding column, the sliding column penetrates through the top plate to be in sliding fit with the top plate, the top plate is fixed on the shell, the sliding column is sleeved with a spring, and the bottom of the spring is fixed on the blocking plate.
Description
Technical Field
The invention belongs to the technical field of hydropower stations, and particularly relates to a main shaft sealing method applied to a main shaft of a water turbine.
Background
The hydraulic generator is a generator which takes a hydraulic turbine as a prime mover to convert water energy into electric energy. When water flows through the water turbine, water energy is converted into mechanical energy, and a rotating shaft of the water turbine drives a rotor of the generator to convert the mechanical energy into electric energy for output. Is the main power equipment for generating electric energy in a hydropower station. The main shaft of the water turbine plays an important role in the working process of the water turbine. One end of the main shaft of the water turbine is a near water end, the other end of the main shaft of the water turbine is a far water end, and a generator is installed at the far water end. Therefore, the sealing effect of the main shaft of the water turbine is important. The sealing device of the existing water turbine main shaft is generally sealed by a packing, but the sealing effect is poor after the sealing device is used for a long time, and water leaks to the far water end of the water turbine main shaft and then enters a generator system to influence the operation of the whole unit.
Disclosure of Invention
The invention aims to provide a water turbine main shaft sealing method which is simple in structure and convenient and fast to install.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for sealing a main shaft of a water turbine comprises the following steps,
a. installing a sealing bearing on a main shaft of the water turbine, turning an annular groove on the main shaft at the far water end on one side of the sealing bearing to manufacture an umbrella-shaped water guide ring, installing a sealing ring in the annular groove, then clamping two semicircular umbrella-shaped water guide rings in the annular groove, and welding or clamping to ensure that the umbrella-shaped water guide rings are integrally sealed and cannot leak water;
b. a sealing ring is arranged on the other side of the umbrella-shaped water guide ring;
c. manufacturing an outer shell, wherein one end of the outer shell is fixed on an outer ring of a sealing bearing, and the other end of the outer shell is in sliding fit with the sealing ring;
d. the arc water guide ring at the edge end of the umbrella-shaped water guide ring corresponds to the back hook end of the shell to form a water receiving ring, and a water outlet pipe is arranged at the bottom of the shell;
e. an air inlet is arranged on the shell close to the sealing bearing, and an air outlet is arranged on the shell at the upper part of the sealing ring;
f. the gas outlet is provided with a blocking plate, the blocking plate is provided with a sliding column, the sliding column penetrates through the top plate and is in sliding fit with the top plate, the top plate is fixed on the shell through two supports, the sliding column between the blocking plate and the top plate is sleeved with a spring, the bottom of the spring is fixed on the blocking plate, and the top of the spring is in contact with the top plate.
In the method for sealing the main shaft of the water turbine, the upper part of the umbrella-shaped surface of the umbrella-shaped water guide ring is radially provided with the water guide grooves by taking the main shaft as the center.
According to the method for sealing the main shaft of the water turbine, the sealing ring is fixedly arranged on the inner side of the sealing ring.
By adopting the technical scheme, the invention has the following technical effects:
the invention guides the seepage water into the water receiving ring through the outer shell fixed on the sealing bearing and the umbrella-shaped guide ring used for guiding the seepage water in the outer shell, and then the seepage water is discharged from the water outlet pipe at the bottom of the outer shell. Set up air inlet and gas outlet on the shell, can reach the effect of adjusting the shell internal pressure, be provided with closure plate and spring on the shell in addition, can balance the inside and outside pressure of shell, more quick derive the percolating water in the water receiving ring to propose out from the outlet pipe. The invention has simple structure, convenient operation and obvious sealing effect.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural view of the umbrella-shaped deflector ring shown in fig. 1.
Fig. 3 is a diagram of the connection relationship between the blocking plate, the spring and the sliding column in fig. 1.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
Referring to fig. 1, 2 and 3, wherein the numbers are as follows:
the water collecting device comprises a water receiving ring 1, an arc water guide ring 2, a sealing ring 3, a sealing ring 4, an umbrella-shaped water guide ring 5, an inner sealing ring 7, a shell 8, a sealing bearing 9, a main shaft 10, a water outlet pipe 11, a water guide groove 12, an air inlet 13, an air outlet 14, a top plate 15, a sliding column 16, a spring 17 and a blocking plate 18.
A method for sealing a main shaft of a water turbine comprises the steps that a, a sealing bearing 9 is installed on a main shaft 10 of the water turbine, an annular groove is formed in the main shaft at the far water end on one side of the sealing bearing in a turning mode, an umbrella-shaped water guide ring 5 is manufactured, a sealing ring 7 is installed in the annular groove, then two semicircular umbrella-shaped water guide rings are clamped in the annular groove, and the umbrella-shaped water guide rings are welded or clamped to enable the whole umbrella-shaped water guide rings to be sealed and not to leak water;
b. a sealing ring 3 is arranged on the other side of the umbrella-shaped water guide ring;
c. manufacturing an outer shell 8, fixing one end of the outer shell on an outer ring of the sealing bearing, and enabling the other end of the outer shell to be in sliding fit with the sealing ring;
d. the arc water guide ring 2 at the edge end of the umbrella-shaped water guide ring corresponds to the back hook end of the shell to form a water receiving ring 1, and a water outlet pipe 11 is arranged at the bottom of the shell;
e. an air inlet 13 is arranged on the shell close to the sealing bearing, and an air outlet 14 is arranged on the shell at the upper part of the sealing ring;
f. install closure plate 18 on the gas outlet, be provided with traveller 16 on the closure plate, the traveller passes roof 15 and roof sliding fit, and the roof is fixed on the shell through two supports, overlaps on the traveller between closure plate and roof to be equipped with spring 17, and the bottom of spring is fixed on the closure plate, and the top contacts with the roof.
When the main shaft of the water turbine rotates, the umbrella-shaped water guide ring is driven to rotate together, so that water leaked from the sealing bearing is guided into the water receiving ring, and the water entering the water receiving ring is discharged from the water outlet pipe at the bottom under the action of gravity, so that the sealing effect is achieved.
In the sealing method of the main shaft of the water turbine, the water guide grooves 12 are radially arranged on the upper part of the umbrella-shaped surface of the umbrella-shaped water guide ring by taking the main shaft as the center, so that the leaked water can be quickly led out.
According to the method for sealing the main shaft of the water turbine, the inner sealing rings 7 are arranged between the two sides of the umbrella-shaped water guide ring along the main shaft direction and the main shaft, and the umbrella-shaped water guide ring can be tightly and tightly sealed on the main shaft of the water turbine.
According to the method for sealing the main shaft of the water turbine, the sealing ring 4 is fixedly arranged on the inner side of the sealing ring, so that the sealing effect can be further achieved through the dual functions of the sealing ring and the sealing ring.
The installation process of the invention is as follows: the method comprises the steps of turning a lower annular groove on a main shaft at the far water end of a water turbine, installing a packing 6 and an inner sealing ring, then sleeving an umbrella-shaped water guide ring on the main shaft, welding or clamping the umbrella-shaped water guide ring into a whole by two semicircular water guide rings, sequentially sleeving the sealing ring and the sealing ring on the main shaft, covering an outer shell outside the umbrella-shaped water guide ring, and fixing the outer shell on a sealing bearing outer ring, so that installation is completed, then installing a blocking plate at a gas outlet, fixedly installing a sliding column 16 on the blocking plate, enabling the sliding column to penetrate through a top plate 15 to be in sliding fit with the top plate, fixing the top plate on the outer shell through two supports, sleeving a spring 17 on the sliding column between the blocking plate and the top plate, fixing the bottom of the spring on the blocking plate, and enabling the top to be in contact with the top plate. Therefore, the pressure inside and outside the shell can be balanced, and the pressure inside the shell is not too large to influence the water leakage guiding.
The working process of the invention is as follows: when the main shaft of the water turbine rotates, the umbrella-shaped water guide ring is driven to rotate together, so that water leaked from the sealing bearing is guided into the water receiving ring, and the water entering the water receiving ring is discharged from the water outlet pipe at the bottom under the action of gravity, so that the sealing effect is achieved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the overall concept of the invention, and these should be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicability of the patent.
Claims (3)
1. A method for sealing a main shaft of a water turbine is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
a. installing a sealing bearing (9) on a main shaft of the water turbine, turning an annular groove on the main shaft at the far water end on one side of the sealing bearing, manufacturing an umbrella-shaped water guide ring (5), installing a sealing ring (7) in the annular groove, then clamping two semicircular umbrella-shaped water guide rings in the annular groove, wherein the tip of the umbrella-shaped water guide ring is far away from the far water end of the sealing bearing, the flaring end of the umbrella-shaped water guide ring faces the far water end of the sealing bearing, and welding or clamping to ensure that the umbrella-shaped water guide ring is integrally sealed without water leakage;
b. a sealing ring (3) is arranged on the other side of the umbrella-shaped water guide ring;
c. manufacturing an outer shell (8), fixing one end of the outer shell on an outer ring of the sealing bearing, and enabling the other end of the outer shell to be in sliding fit with the sealing ring;
d. the arc-shaped water guide ring (2) at the edge end of the umbrella-shaped water guide ring corresponds to the hook-back end of the shell to form a water receiving ring (1), and a water outlet pipe (11) is arranged at the bottom of the shell;
e. an air inlet (13) is arranged on the shell close to the sealing bearing, and an air outlet (14) is arranged on the shell at the upper part of the sealing ring;
f. be provided with closure plate (18) on the gas outlet, be provided with traveller (16) on the closure plate, the traveller passes roof (15) and roof sliding fit, and the roof is fixed on the shell through two supports, overlaps on the traveller between closure plate and roof to be equipped with spring (17), and the bottom of spring is fixed on the closure plate, and the top contacts with the roof.
2. The method of sealing a main shaft of a water turbine according to claim 1, wherein: the upper part of the umbrella-shaped surface of the umbrella-shaped water guide ring is provided with water guide grooves (12) in a radial shape by taking the main shaft as the center.
3. The method of sealing a main shaft of a water turbine according to claim 1, wherein: and a sealing ring (4) is fixedly arranged on the inner side of the sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011287288.7A CN112324603B (en) | 2020-11-17 | 2020-11-17 | Water turbine main shaft sealing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011287288.7A CN112324603B (en) | 2020-11-17 | 2020-11-17 | Water turbine main shaft sealing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112324603A CN112324603A (en) | 2021-02-05 |
| CN112324603B true CN112324603B (en) | 2022-02-08 |
Family
ID=74322443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011287288.7A Expired - Fee Related CN112324603B (en) | 2020-11-17 | 2020-11-17 | Water turbine main shaft sealing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112324603B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775273A (en) * | 2014-02-28 | 2014-05-07 | 南京贝奇尔机械有限公司 | Sealing device of main shaft of RPT (reversible pump turbine) type water turbine |
| CN110081250A (en) * | 2019-03-07 | 2019-08-02 | 哈尔滨盛迪电力设备有限公司 | Band centrifugation drip ring automatic Regulation seals water supply device |
| CN210769118U (en) * | 2019-09-19 | 2020-06-16 | 江苏淳天新能源科技有限公司 | Main shaft sealing device of impulse turbine |
| CN111826898A (en) * | 2020-08-25 | 2020-10-27 | 宁波众方电器有限公司 | Water leakage flow guide structure of washing machine clutch |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7877992B2 (en) * | 2008-05-29 | 2011-02-01 | Tien-Chuan Chen | Hydraulic power generation system driven by compression air produced by fluid |
| CN102042152A (en) * | 2010-08-14 | 2011-05-04 | 黄国宏 | Hydroturbine permanent spindle sealing device |
| CN202108636U (en) * | 2011-05-10 | 2012-01-11 | 福建通政水电设备实业有限公司 | Sealing device of hydraulic turbine spindle |
| CN204827770U (en) * | 2015-07-22 | 2015-12-02 | 重庆汉洋水电设备有限公司 | Hydraulic turbine shaft seal structure |
| CN205154485U (en) * | 2015-10-30 | 2016-04-13 | 云南大唐国际那兰水电开发有限公司 | Sealed lid of generator guide bearing oil pan |
| CN109764170A (en) * | 2019-03-14 | 2019-05-17 | 珠海格力电器股份有限公司 | Automatic pressure balancing device and closed water system |
-
2020
- 2020-11-17 CN CN202011287288.7A patent/CN112324603B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775273A (en) * | 2014-02-28 | 2014-05-07 | 南京贝奇尔机械有限公司 | Sealing device of main shaft of RPT (reversible pump turbine) type water turbine |
| CN110081250A (en) * | 2019-03-07 | 2019-08-02 | 哈尔滨盛迪电力设备有限公司 | Band centrifugation drip ring automatic Regulation seals water supply device |
| CN210769118U (en) * | 2019-09-19 | 2020-06-16 | 江苏淳天新能源科技有限公司 | Main shaft sealing device of impulse turbine |
| CN111826898A (en) * | 2020-08-25 | 2020-10-27 | 宁波众方电器有限公司 | Water leakage flow guide structure of washing machine clutch |
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| Publication number | Publication date |
|---|---|
| CN112324603A (en) | 2021-02-05 |
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Granted publication date: 20220208 |