IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0764440
(2010-04-21)
|
| 등록번호 |
US-8314507
(2012-11-20)
|
|
발명자
/ 주소 |
- Harris, William D.
- Kiser, Jeff
|
| 출원인 / 주소 |
|
| 대리인 / 주소 |
Michael Best & Friedrich LLP
|
| 인용정보 |
피인용 횟수 :
0 인용 특허 :
79 |
초록
▼
A turbine replacement unit for replacement of at least one double runner horizontal submersible installation for a hydroelectric plant including at least one submerged coupling and at least one submerged bearing supported by a submerged bearing pedestal in which each of the two runners discharge a f
A turbine replacement unit for replacement of at least one double runner horizontal submersible installation for a hydroelectric plant including at least one submerged coupling and at least one submerged bearing supported by a submerged bearing pedestal in which each of the two runners discharge a flow into a common draft tube. The replacement unit includes a single runner positioned to replace each of the two runners, the single runner receiving a flow and discharging the flow into the existing common draft tube. A dry pit assembly is positioned to surround the submerged pedestal and define an air space around the submerged pedestal and an oil-flooded bearing is positioned on the pedestal to replace the submerged bearing. A shaft supports the runner for rotation and is at least partially supported for rotation by the oil-flooded bearing. A generator is coupled to the shaft and is operable to produce an electrical power in response to rotation of the shaft.
대표청구항
▼
1. A turbine replacement unit for replacement of at least one double runner horizontal submersible installation for a hydroelectric plant including at least one submerged coupling and at least one submerged bearing supported by a submerged bearing pedestal in which each of the two runners discharge
1. A turbine replacement unit for replacement of at least one double runner horizontal submersible installation for a hydroelectric plant including at least one submerged coupling and at least one submerged bearing supported by a submerged bearing pedestal in which each of the two runners discharge a flow into a common draft tube, the replacement unit comprising: a single runner positioned to replace each of the two runners, the single runner receiving a flow and discharging the flow into the existing common draft tube;a series of wicket gates positioned adjacent the single runner and operable to control the volume of flow into the runner;a dry pit assembly positioned to surround the submerged pedestal and define an air space around the submerged pedestal;an oil-flooded bearing positioned on the pedestal to replace the submerged bearing;a vacuum breaker system operable to fill the runner and the existing common draft tube with air when the series of wicket gates is closed;a shaft supporting the runner for rotation and at least partially supported for rotation by the oil-flooded bearing; anda generator coupled to the shaft and operable to produce an electrical power in response to rotation of the shaft. 2. The turbine replacement unit of claim 1, further comprising an actuator operable to move the wicket gates, the actuator substantially disposed within the dry pit assembly. 3. The turbine replacement unit of claim 1, further comprising a dual-direction oil-lubricated thrust bearing arranged to accommodate the thrust produced by the single runner. 4. A turbine replacement unit for replacement of a horizontal submersible unit for a hydroelectric plant wherein the unit includes at least two double runners including synchronized wicket gates, the runners supported on a preexisting foundation and coupled to a common shaft supported by at least two submerged bearings supported by a first submerged bearing pedestal and a second submerged bearing pedestal in which a first existing runner and a second existing runner discharge into a first draft tube and a third existing runner and a fourth existing runner discharge into a second draft tube, the replacement unit comprising: a first dry pit assembly positioned around the first bearing pedestal and defining an air space around the first bearing pedestal;a first oil-flooded bearing positioned on the pedestal to replace one of the submerged bearings;a first replacement runner assembly connected to the first dry pit and including an inlet positioned to receive a first flow and an outlet positioned to discharge the first flow into the first draft tube, the first flow being the only flow into the first draft tube, the first replacement runner assembly including a first replacement runner;a first series of wicket gates positioned adjacent the first replacement runner and operable to control the volume of flow into the first replacement runner;a second dry pit assembly positioned around the second bearing pedestal and defining an air space around the second bearing pedestal;a second oil-flooded bearing positioned on the pedestal to replace the other of the submerged bearings;a second replacement runner assembly connected to the second dry pit and including an inlet positioned to receive a second flow and an outlet positioned to discharge the second flow into the second draft tube, the second flow being the only flow into the second draft tube, the second replacement runner assembly including a second replacement runner;a vacuum breaker system operable to fill the first replacement runner and the first draft tube with air when the first series of wicket gates is closed;a shaft supporting the first replacement runner and the second replacement runner for rotation and at least partially supported for rotation by the first oil-flooded bearing and the second oil-flooded bearing; anda generator coupled to the shaft and operable to produce an electrical power in response to rotation of the shaft. 5. The turbine replacement unit of claim 4, further comprising a dual-direction oil-lubricated thrust bearing arranged to accommodate the thrust produced by operation of the first replacement runner and the second replacement runner. 6. The turbine replacement unit of claim 4, further comprising a second series of wicket gates positioned adjacent the second replacement runner and operable to control the volume of flow into the second replacement runner, the first series of wicket gates being movable independent of the second series of wicket gates. 7. The turbine replacement unit of claim 6, further comprising a first actuator operable to move the first series of wicket gates and a second actuator operable to move the second series of wicket gates, the first actuator substantially disposed within the first dry pit assembly and the second actuator substantially disposed within the second dry pit assembly. 8. A method of replacing a horizontal submersible installation for a hydroelectric unit including at least two double runners including synchronized wicket gates, the runners supported on a preexisting foundation and coupled to a common shaft supported by at least two submerged bearings supported by a first submerged bearing pedestal and a second submerged bearing pedestal in which a first existing runner assembly and a second existing runner assembly discharge into a first draft tube and a third existing runner assembly and a fourth existing runner assembly discharge into a second draft tube, the method comprising: removing the first existing runner assembly and the second existing runner assembly;positioning a first dry pit assembly around the first submerged bearing pedestal to produce an air space around the first submerged bearing pedestal;connecting a first new runner assembly including a first new runner to the first dry pit assembly, the first new runner assembly arranged to receive a first flow and discharge the first flow into the first draft tube, the first flow being the only flow into the first draft tube;positioning a first oil-flooded bearing on the first bearing pedestal;removing the third existing runner assembly and the fourth existing runner assembly;positioning a second dry pit assembly around the second submerged bearing pedestal to produce an air space around the second submerged bearing pedestal;connecting a second new runner assembly including a second new runner to the second dry pit assembly, the second new runner assembly arranged to receive a second flow and discharge the second flow into the second draft tube, the second flow being the only flow into the second draft tube;positioning a second oil-flooded bearing on the second bearing pedestal;positioning a first series of wicket gates adjacent the first new runner to control the volume of flow through the first new runner;positioning a vacuum breaker system operable to fill the first new runner and the first draft tube with air when the first series of wicket gates is closed;supporting the first new runner and the second new runner on a shaft; andsupporting the shaft on the first oil-flooded bearing and the second oil-flooded bearing. 9. The method of claim 8, further comprising closing the first series of wicket gates and admitting a quantity of air into the first new runner assembly and the first draft tube to operate the first new runner assembly in an air space. 10. The method of claim 8, further comprising positioning a second series of wicket gates adjacent the second new runner to control the volume of flow through the second new runner. 11. The method of claim 10, further comprising operating a first actuator to move the first series of wicket gates and operating a second actuator to move the second series of wicket gates, the first actuator substantially disposed within the first dry pit assembly and the second actuator disposed within the second dry pit assembly. 12. The method of claim 10, further comprising closing the second series of wicket gates and admitting a quantity of air into the second new runner assembly and the second draft tube to operate the second new runner assembly in an air space. 13. A turbine replacement unit for replacement of a horizontal submersible installation for a hydroelectric plant including at least two opposed double runners including synchronized wicket gates, a first existing runner and a second existing runner discharge flow into a first draft tube, and a third existing runner and a fourth existing runner discharge flow into a second draft tube, the replacement unit comprising: a first dry pit assembly;a second dry pit assembly;a first replacement runner assembly connected to the first dry pit assembly and including an inlet positioned to receive a first flow and an outlet positioned to discharge the first flow into the first draft tube, the first flow being the only flow into the first draft tube, the first replacement runner assembly including a first replacement runner;a second replacement runner assembly connected to the second dry pit assembly and including an inlet positioned to receive a second flow and an outlet positioned to discharge the second flow into the second draft tube, the second flow being the only flow into the second draft tube, the second replacement runner assembly including a second replacement runner;a first series of wicket gates positioned adjacent the first replacement runner and operable to control the first flow into the first replacement runner;a vacuum breaker system operable to fill the first replacement runner assembly and the first draft tube with air when the associated first series of wicket gates is closed; anda second series of wicket gates positioned adjacent the second replacement runner and operable to control the second flow into the second replacement runner, wherein the first series of wicket gates and the second series of wicket gates are movable independent of one another. 14. The turbine replacement unit of claim 13, further comprising a first actuator operable to move the first series of wicket gates and a second actuator operable to move the second series of wicket gates, the first actuator substantially disposed within the first dry pit assembly and the second actuator substantially disposed within the second dry pit assembly. 15. The turbine replacement unit of claim 13, further comprising a dual-direction oil-lubricated thrust bearing arranged to accommodate the thrust produced by operation of the first replacement runner and the second replacement runner. 16. The turbine replacement unit of claim 13, further comprising a generator and a shaft coupled to the generator, the first replacement runner and the second replacement runner. 17. The turbine replacement unit of claim 16, further comprising a first oil-flooded bearing disposed within the first dry pit assembly and a second oil-flooded bearing disposed within the second dry pit assembly, the bearings operable to at least partially support the shaft for rotation.
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