CN201739506U - Sealing device for main shaft of hydraulic turbine - Google Patents
Sealing device for main shaft of hydraulic turbine Download PDFInfo
- Publication number
- CN201739506U CN201739506U CN2010202425802U CN201020242580U CN201739506U CN 201739506 U CN201739506 U CN 201739506U CN 2010202425802 U CN2010202425802 U CN 2010202425802U CN 201020242580 U CN201020242580 U CN 201020242580U CN 201739506 U CN201739506 U CN 201739506U
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- CN
- China
- Prior art keywords
- sealing
- hydraulic turbine
- main shaft
- fixed
- pins
- 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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- 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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- Sealing Devices (AREA)
Abstract
The utility model relates to hydraulic power generating equipment, particularly to a sealing device for the main shaft of a hydraulic turbine, which has the advantages of energy conservation, consumption reduction, reliable sealing performance and capability of prolonging the service life of the hydraulic turbine. The sealing device adopts the structure that an annular sealing block is fixed in an annular sealing groove on a seal receptacle through two vanish thread dowel pins, eight pins are uniformly distributed and fixed on the annular sealing groove below the sealing block, eight springs are sleeved on the pins respectively, and the lower end of every spring is fixed in the sealing groove. The main shaft seal device of hydraulic turbine has the advantages of energy conservation, consumption reduction, reliable sealing performance and capability of prolonging the service life of the hydraulic turbine, and is applicable to small hydropower stations.
Description
Technical field
The utility model relates to a kind of hydro-electric power generating equipment, particularly relates to a kind of saving energy and reduce the cost, the reliable hydraulic turbine main shaft sealing device that also can increase the service life of sealability.
Background technique
The main shaft seal form that water turbine is commonly used is the piston type main shaft sealing construction at present, and it mainly contains formations such as piston body (being seal groove), piston (being sealing block), wearing plate, facing plate, position limit pin (spiral shell stern post pin), nut.Its working principle is to make on the piston by hydraulic pressure to move, and with the wearing plate, facing plate friction, thereby stops current to pass through, to reach the effect of main shaft seal.Because hydraulic pressure is little than spring pressure, so sealing effect is poor, water leakage is big; Moreover the sealing effect difference causes the silt alluvial in the percolating water, and unit is caused damage.Supply pressure water needs the water pump long-term work in addition, and has produced a series of cost inputs and recondition expense thus.
The model utility content
It is a kind of energy-saving and cost-reducing that the purpose of this utility model is to provide, the reliable a kind of hydraulic turbine main shaft sealing device that also can increase the service life of sealability.
The utility model is to be that sealing block at ring is fixed on two spiral shell stern post pins in the annular seal groove on the sealing seat, eight pins evenly distribute and are fixed under the sealing block on the annular seal groove, eight springs are set on eight pins, and each spring lower end all is fixed in the seal groove.
Advantage of the present utility model is simple in structure, and is energy-saving and cost-reducing, the reliable a kind of hydraulic turbine main shaft sealing device that also can increase the service life of sealability.It is applicable in small hydropower station and uses very much.
Description of drawings
Fig. 1 is an A-A sectional view of the present utility model;
Fig. 2 is a plan view of the present utility model.
1-pipe joint 2-sealing block 3-hydraulic turbine main shaft 4-change 5-spring 6-pin 7-sealing seat 8-seal groove 9-nut 10-spiral shell stern post pin
Specific embodiment
The utility model is done the explanation of further detail below in conjunction with embodiment:
The utility model is that the sealing block (2) of ring is fixed in the annular seal groove (8) on the sealing seat (7) with two spiral shell stern post pins (10), eight pins (6) evenly distribute and are fixed under the sealing block (2) on the annular seal groove (8), eight springs (5) are set on eight pins (6), and each spring (5) lower end all is fixed in the seal groove (8).
Working principle of the present utility model and working procedure are described below: when the hydraulic generator unit starts, drop into main shaft seal water (promptly inserting cleaning pressure water) from pipe joint (1), give pressure by the sealing block (2) that the water pipe in the main shaft seal seat (7) is fixed to nut (9) and spiral shell stern post pin (10), sealing block (2) is contacted closely with change (4), reduce percolating water.During unit operation, the high-pressure water flow in the spiral case along with the turbine shaft (3) that rotates vertically to the upper reaches, arrive and be full of sealing seat (7) inside.Because of sealing seat (7) is a standing part with sealing block (2), turbine shaft (3) and change (4) are rotating parts, and the high-pressure water flow of sealing seat (7) lining can only flow out from the surface of contact of sealing block (2) with change (4).The utility model is by dwindling the gap between sealing block (2) and the change (4), thereby guaranteed the safe and reliable of sealing, also reached purpose energy-saving and cost-reducing, economical operation simultaneously.
Claims (1)
1. hydraulic turbine main shaft sealing device, form by sealing block, sealing seat, the sealing block (2) that it is characterized in that ring is fixed in the annular seal groove (8) on the sealing seat (7) with two spiral shell stern post pins (10), eight pins (6) evenly distribute and are fixed under the sealing block (2) on the annular seal groove (8), eight springs (5) are set on eight pins (6), and each spring (5) lower end all is fixed in the seal groove (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202425802U CN201739506U (en) | 2010-06-29 | 2010-06-29 | Sealing device for main shaft of hydraulic turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202425802U CN201739506U (en) | 2010-06-29 | 2010-06-29 | Sealing device for main shaft of hydraulic turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201739506U true CN201739506U (en) | 2011-02-09 |
Family
ID=43554781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202425802U Expired - Fee Related CN201739506U (en) | 2010-06-29 | 2010-06-29 | Sealing device for main shaft of hydraulic turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201739506U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287534A (en) * | 2011-07-18 | 2011-12-21 | 成都天保重型装备股份有限公司 | Static pressure sealing structure of hydraulic end face of bearing |
| CN103363116A (en) * | 2013-08-03 | 2013-10-23 | 刘立起 | Drum type boosting multi-ring composite seal ring |
| 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 |
-
2010
- 2010-06-29 CN CN2010202425802U patent/CN201739506U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287534A (en) * | 2011-07-18 | 2011-12-21 | 成都天保重型装备股份有限公司 | Static pressure sealing structure of hydraulic end face of bearing |
| CN103363116A (en) * | 2013-08-03 | 2013-10-23 | 刘立起 | Drum type boosting multi-ring composite seal ring |
| CN103363116B (en) * | 2013-08-03 | 2016-01-20 | 刘立起 | Drum type supercharging many rings composite sealing ring |
| 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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20110629 |