CN104132139A - Main shaft sealing structure for water turbine - Google Patents
Main shaft sealing structure for water turbine Download PDFInfo
- Publication number
- CN104132139A CN104132139A CN201310592133.8A CN201310592133A CN104132139A CN 104132139 A CN104132139 A CN 104132139A CN 201310592133 A CN201310592133 A CN 201310592133A CN 104132139 A CN104132139 A CN 104132139A
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- CN
- China
- Prior art keywords
- main shaft
- sealing
- end cap
- water
- water device
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- 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.)
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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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- Hydraulic Turbines (AREA)
Abstract
The invention discloses a main shaft sealing structure for a water turbine. The main shaft sealing structure comprises a main shaft. A water sealing device and end covers are respectively disposed on the main shaft. A gap at the connection of the water sealing device and each end cover is 2-3cm. A pressure water communicating pipe is arranged between the water sealing device and each end cover and connected between the two in a sealed manner. Each pressure water communicating pipe is vertical to the water sealing device and communicated with the space of the same. The water sealing device and the end covers respectively penetrate the main shaft. Each of the end covers at the upper and lower ends of the main shaft is separated into two sections, and the two sections are connected through a movable connector. The main shaft sealing structure is good in sealing effect, the sealing performance is unaffected during moving, long-term normal operation can be achieved, good connecting performance is achieved, and service life is prolonged greatly.
Description
Technical field
The present invention relates to a kind of sealing configuration, particularly a kind of main shaft-sealing structure for hydroturbines.
Background technique
Along with the development of hydroelectric machine industry, the various aspects of performance of water turbine is constantly optimized, and particularly, aspect main shaft seal, various sealing means constantly improve and are used widely.But in the situation that sediment charge is larger, most main shafts can produce jam phenomenon, thereby lost seal action, main shaft is after jam, during maintenance, working strength is larger, and spindle abrasion degree is also larger, and the complicated structure of general main shaft seal own, also need to be equipped with special-purpose compressed air system, be unfavorable for like this saving of cost.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the problems referred to above, a kind of sealing configuration good sealing effect is provided, when mobile, also can not affect its sealability, can guarantee long playing main shaft-sealing structure for hydroturbines under normal circumstances.
To achieve these goals, the technical solution used in the present invention is such: main shaft-sealing structure for hydroturbines of the present invention, comprise main shaft, on main shaft, be respectively equipped with sealing water device and end cap, the gap of sealing water device and end cap joint is two to three centimetres, between sealing water device and end cap, be provided with press water connecting pipe, press water connecting pipe is sealedly connected between end cap and sealing water device, press water connecting pipe is vertical with sealing water device, press water connecting pipe is communicated with sealing water device space, sealing water device and end cap are respectively through main shaft setting, the end cap of main shaft upper end and lower end is divided into two sections, and by active connection, connect between two sections of end caps, and be connected with air shroud near on the end cap of main shaft, on air shroud, be coated with sheath, air shroud is connected with end cap by fastening screw trip bolt, and the end cap of main shaft is provided with clamping bolt relatively, also comprise water stop ring, water stop ring one end is connected with sheath, its the other end is fixed on end cap by clamping bolt.
Further, as a kind of concrete structural type, water stop ring of the present invention is arranged in water stopping trough.
Further, as a kind of concrete structural type, between the press water connecting pipe of main shaft lower end of the present invention and sealing water device, be connected with waste pipe, waste pipe communicates with press water connecting pipe and sealing water device respectively.
Further, as a kind of concrete structural type, main shaft of the present invention surface is provided with protective coating.
Compared with prior art, the invention has the advantages that: this main shaft-sealing structure for hydroturbines good sealing effect, when mobile, can not affect its sealability yet, can guarantee long-play under normal circumstances, and switching performance is good, also significantly strengthen working life.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is structural representation of the present invention;
In figure: 1. main shaft, 2. sealing water device, 3. end cap, 4. press water connecting pipe, 5. active connection, 6. seal connector, 7. clamping bolt, 8. waste pipe, 9. air shroud, 10. sheath, 11. water stop rings.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, basic structure of the present invention is only described in a schematic way, so it only show the formation relevant with the present invention.
The preferred embodiment of main shaft-sealing structure for hydroturbines of the present invention as shown in Figure 1, comprise main shaft 1, on main shaft 1, be respectively equipped with sealing water device 2 and end cap 3, the gap of sealing water device 2 and end cap 3 joints is two to three centimetres, between sealing water device 2 and end cap 3, be provided with press water connecting pipe 4, press water connecting pipe 4 is sealedly connected between end cap 3 and sealing water device 2, press water connecting pipe 4 is vertical with sealing water device 2, press water connecting pipe 4 is communicated with sealing water device 2 spaces, sealing water device 2 and end cap 3 arrange through main shaft 1 respectively, the end cap 3 of main shaft 1 upper end and lower end is divided into two sections, and by active connection 5, connect between two sections of end caps 3, and be connected with air shroud 9 near on the end cap 3 of main shaft 1, on air shroud 9, be coated with sheath 10, air shroud 9 is connected with end cap 3 by fastening screw trip bolt, and the end cap 3 of main shaft 1 is provided with clamping bolt 7 relatively, also comprise water stop ring 11, water stop ring 11 one end are connected with sheath 10, its the other end is fixed on end cap 3 by clamping bolt 7, described water stop ring 11 is arranged in water stopping trough, between the press water connecting pipe 4 of described main shaft 1 lower end and sealing water device 2, be connected with waste pipe 8, waste pipe 8 communicates with press water connecting pipe 4 and sealing water device 2 respectively, described main shaft 1 surface is provided with protective coating.
Main shaft-sealing structure for hydroturbines good sealing effect of the present invention, can not affect its sealability when mobile yet, can guarantee long-play under normal circumstances, and switching performance is good, and also significantly strengthen working life.Water stop ring 11 is arranged in water stopping trough, meets design requirement, can play certain protective action, and is convenient to install and safeguard; Between the press water connecting pipe 4 of main shaft 1 lower end and sealing water device 2, be connected with waste pipe 8, waste pipe 8 communicates with press water connecting pipe 4 and sealing water device 2 respectively, and better draining, sand discharge make it be difficult for causing inner obstruction; Main shaft 1 surface is provided with protective coating, can play certain protective action.
The above-mentioned foundation desirable embodiment of the present invention of take is enlightenment, and by above-mentioned description, relevant staff can, within not departing from the scope of this invention technological thought, carry out various change and modification completely.The technical scope of this invention is not limited to the content on specification, must determine its technical scope according to claim scope.
Claims (4)
1. a main shaft-sealing structure for hydroturbines, comprise main shaft, it is characterized in that: on main shaft, be respectively equipped with sealing water device and end cap, the gap of sealing water device and end cap joint is two to three centimetres, between sealing water device and end cap, be provided with press water connecting pipe, press water connecting pipe is sealedly connected between end cap and sealing water device, press water connecting pipe is vertical with sealing water device, press water connecting pipe is communicated with sealing water device space, sealing water device and end cap are respectively through main shaft setting, the end cap of main shaft upper end and lower end is divided into two sections, and by active connection, connect between two sections of end caps, and be connected with air shroud near on the end cap of main shaft, on air shroud, be coated with sheath, air shroud is connected with end cap by fastening screw trip bolt, and the end cap of main shaft is provided with clamping bolt relatively, also comprise water stop ring, water stop ring one end is connected with sheath, its the other end is fixed on end cap by clamping bolt.
2. main shaft-sealing structure for hydroturbines according to claim 1, is characterized in that: described water stop ring is arranged in water stopping trough.
3. main shaft-sealing structure for hydroturbines according to claim 1, is characterized in that: between the press water connecting pipe of described main shaft lower end and sealing water device, be connected with waste pipe, waste pipe communicates with press water connecting pipe and sealing water device respectively.
4. main shaft-sealing structure for hydroturbines according to claim 1, is characterized in that: described main shaft surface is provided with protective coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310592133.8A CN104132139A (en) | 2013-11-22 | 2013-11-22 | Main shaft sealing structure for water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310592133.8A CN104132139A (en) | 2013-11-22 | 2013-11-22 | Main shaft sealing structure for water turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104132139A true CN104132139A (en) | 2014-11-05 |
Family
ID=51804932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310592133.8A Pending CN104132139A (en) | 2013-11-22 | 2013-11-22 | Main shaft sealing structure for water turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104132139A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08177705A (en) * | 1994-12-27 | 1996-07-12 | Toshiba Eng Co Ltd | Main shaft sealing water device of vertical shaft hydraulic turbine |
| JPH0925870A (en) * | 1995-07-11 | 1997-01-28 | Fuji Electric Co Ltd | Horizontal shaft end face sealing type main shaft water sealing device |
| CN201739506U (en) * | 2010-06-29 | 2011-02-09 | 彬县程家川水电有限责任公司 | Sealing device for main shaft of hydraulic turbine |
| CN201874726U (en) * | 2010-12-10 | 2011-06-22 | 福建南电股份有限公司 | Main shaft sealing device of water turbine |
| CN202140226U (en) * | 2011-05-19 | 2012-02-08 | 天津市天发重型水电设备制造有限公司 | Non-contact type water wheel main shaft sealing structure |
| CN202203026U (en) * | 2011-05-13 | 2012-04-25 | 湖南云箭集团有限公司 | Main shaft sealing device of horizontal water turbine |
| CN202468993U (en) * | 2011-11-29 | 2012-10-03 | 天津市天发重型水电设备制造有限公司 | Novel main shaft sealing structure of water wheel generator |
| CN202768843U (en) * | 2012-08-27 | 2013-03-06 | 福建南电股份有限公司 | Sand erosion resistant water turbine main shaft seal mechanism |
| CN202768222U (en) * | 2012-08-03 | 2013-03-06 | 郝鹏 | Main shaft sealing structure of simple-constructed horizontal shaft mixed-flow water turbine |
| CN203162152U (en) * | 2013-04-23 | 2013-08-28 | 洪雅力达水力发电设备有限责任公司 | Mixed flow water turbine main shaft sealing device |
| CN203656189U (en) * | 2013-11-22 | 2014-06-18 | 成都科创佳思科技有限公司 | Main shaft seal structure of water turbine |
-
2013
- 2013-11-22 CN CN201310592133.8A patent/CN104132139A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08177705A (en) * | 1994-12-27 | 1996-07-12 | Toshiba Eng Co Ltd | Main shaft sealing water device of vertical shaft hydraulic turbine |
| JPH0925870A (en) * | 1995-07-11 | 1997-01-28 | Fuji Electric Co Ltd | Horizontal shaft end face sealing type main shaft water sealing device |
| CN201739506U (en) * | 2010-06-29 | 2011-02-09 | 彬县程家川水电有限责任公司 | Sealing device for main shaft of hydraulic turbine |
| CN201874726U (en) * | 2010-12-10 | 2011-06-22 | 福建南电股份有限公司 | Main shaft sealing device of water turbine |
| CN202203026U (en) * | 2011-05-13 | 2012-04-25 | 湖南云箭集团有限公司 | Main shaft sealing device of horizontal water turbine |
| CN202140226U (en) * | 2011-05-19 | 2012-02-08 | 天津市天发重型水电设备制造有限公司 | Non-contact type water wheel main shaft sealing structure |
| CN202468993U (en) * | 2011-11-29 | 2012-10-03 | 天津市天发重型水电设备制造有限公司 | Novel main shaft sealing structure of water wheel generator |
| CN202768222U (en) * | 2012-08-03 | 2013-03-06 | 郝鹏 | Main shaft sealing structure of simple-constructed horizontal shaft mixed-flow water turbine |
| CN202768843U (en) * | 2012-08-27 | 2013-03-06 | 福建南电股份有限公司 | Sand erosion resistant water turbine main shaft seal mechanism |
| CN203162152U (en) * | 2013-04-23 | 2013-08-28 | 洪雅力达水力发电设备有限责任公司 | Mixed flow water turbine main shaft sealing device |
| CN203656189U (en) * | 2013-11-22 | 2014-06-18 | 成都科创佳思科技有限公司 | Main shaft seal structure of water turbine |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141105 |