IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0351351
(2006-02-09)
|
등록번호 |
US-7524160
(2009-07-01)
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발명자
/ 주소 |
- Kollé, Jack J.
- Marvin, Mark H.
|
출원인 / 주소 |
- Tempress Technologies, Inc.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
7 인용 특허 :
9 |
초록
▼
A method for governing the speed of a fluid turbine by establishing a circulating flow and a rotational flow with a rotor, and interrupting the rotational flow with an opposing stator. A related braking apparatus includes a housing, a rotatable shaft, a rotor configured to rotatingly engage the shaf
A method for governing the speed of a fluid turbine by establishing a circulating flow and a rotational flow with a rotor, and interrupting the rotational flow with an opposing stator. A related braking apparatus includes a housing, a rotatable shaft, a rotor configured to rotatingly engage the shaft and engage a fluid in the housing with a plurality of radial vanes, and a non-rotating stator comprising a plurality of fluid pockets. The stator is disposed such that the radial vanes of the rotor and the fluid pockets of the stator are oriented in a facing relationship. When the shaft is rotated, the fluid in the housing experiences both a circulating flow and a rotational flow. Thus, the rotational flow is present proximate the radial vanes, but not in the fluid pockets, and the fluid imparts a braking torque on the rotating shaft via the rotor's radial vanes.
대표청구항
▼
The invention in which an exclusive right is claimed is defined by the following: 1. A rotary speed governor apparatus for use with a fluid driven unit, the rotary speed governor apparatus being configured to be employed redundantly if desired, the rotary speed governor apparatus comprising: (a) a
The invention in which an exclusive right is claimed is defined by the following: 1. A rotary speed governor apparatus for use with a fluid driven unit, the rotary speed governor apparatus being configured to be employed redundantly if desired, the rotary speed governor apparatus comprising: (a) a rotor configured to be disposed in a fluid-filled housing and to engage a shaft, such that the rotor and shaft can rotate about a common axis relative to the housing, the rotor including a plurality of radial vanes configured to engage the fluid in the fluid-filled housing; and (b) a stator comprising: (i) a plurality of fluid pockets, such that the rotor, the stator, and the fluid in the housing interact to generate a braking torque that is imparted to the rotor and the shaft; and (ii) means for securing a plurality of stators together to form a stack in which the plurality of stators remain fixed in position relative to one another, thus enabling a plurality of rotors and the plurality of stators to be disposed in an alternating configuration to achieve a speed governor stack, to increase the braking torque imparted to the shaft compared to that provided by only a single stator and a single rotor, thus enabling the rotary speed governor apparatus to be employed redundantly. 2. The rotary speed governor apparatus of claim 1, wherein the stator is configured to be secured to the housing, such that the stator does not move relative to the rotor or the housing. 3. The rotary speed governor apparatus of claim 1 further comprising a coupling attached to a distal end of the rotary speed governor apparatus, the coupling enabling the rotary speed governor apparatus to be coupled to a fluid driven unit, such that when the rotary speed governor apparatus is coupled to the fluid driven unit, fluid exits the distal end of the rotary speed governor apparatus and enters the fluid driven unit, causing a shaft in the fluid driven unit to rotate, rotation of the shaft in the fluid driven unit causing the shaft in the rotary speed governor apparatus to rotate at a speed governed by rotary speed governor apparatus. 4. The rotary speed governor apparatus of claim 1, wherein the stator and rotor comprise at least one of polyether-ketone (PEK), polyether-ether-ketone (PEEK), polyether-ketone-ketone (PEKK), derivatives thereof, and a nickel alloy. 5. The rotary speed governor apparatus of claim 1, wherein the stator and rotor are fabricated from an abrasion resistant material, wherein the abrasion resistant material comprises at least one element selected from the group consisting essentially of a cemented carbide, and a ceramic. 6. The rotary speed governor apparatus of claim 1, wherein said means for securing the plurality of stators together to form a stack comprises at least one boss formed into a first face of the stator and at least one notch formed into a second face of the stator, such that when a plurality of rotors and stators are assembled to achieve the speed governor stack, the notches and bosses of each pair of stators having a rotor disposed between them engage. 7. The rotary speed governor apparatus of claim 1, wherein the rotor is configured to be coupled to the shaft to be rotated with the shaft, while enabling the rotor to move axially relative to the shaft. 8. A rotary speed governor apparatus for use with a fluid driven unit, comprising: (a) an elongate housing having an internal bore defining a volume configured to be filled with a fluid; (b) a shaft disposed in the housing, the shaft being configured to rotate about a longitudinal axis of the housing; (c) a plurality of rotors disposed about the longitudinal axis and configured to engage the shaft, such that rotation of the shaft imparts a corresponding rotation to each rotor, each rotor including a plurality of radial vanes configured to engage the fluid in the housing; and (d) a plurality of stators coupled to the housing about the longitudinal axis such that each stator does not rotate relative to the housing or relative to each rotor, the plurality of rotors and the plurality of stators being stacked in an alternating relationship, each stator comprising a plurality of fluid pockets, the plurality of stators, the plurality of rotors, and a fluid in the housing interacting to generate a braking torque on the rotating shaft. 9. The rotary speed governor apparatus of claim 8, wherein each stator comprises means for securing the plurality of stators together to form a stack, such that the plurality of stators remain fixed in position relative to one another, thus enabling a number of stators and rotors employed to be selectively varied, so that the braking torque imparted to the shaft is increased when more stators and rotors are employed, and is decreased when fewer stators and rotors are employed. 10. The rotary speed governor apparatus of claim 8, wherein each stator and each rotor comprise at least one of polyether-ketone (PEK), polyether-ether-ketone (PEEK), polyether-ketone-ketone (PEKK), and derivatives thereof. 11. The rotary speed governor apparatus of claim 8, wherein each stator and each rotor are double-sided, each side of the rotor including the plurality of radial vanes, and each side of the stator including the plurality of fluid pockets. 12. The rotary speed governor apparatus of claim 8, wherein a distal end of the shaft is configured to be coupled to a fluid driven unit. 13. The rotary speed governor apparatus of claim 8, wherein the shaft is hollow, such that a fluid can be conveyed through the shaft. 14. The rotary speed governor apparatus of claim 13, wherein the shaft comprises an inlet proximate a proximal end of the shaft, coupling the volume defined by the housing in fluid communication with an interior volume of the hollow shaft, such that the fluid conveyed by the hollow shaft is directed into the volume defined by the housing. 15. The rotary speed governor apparatus of claim 14, wherein the shaft comprises an outlet proximate a distal end of the shaft, coupling the volume defined by the housing in fluid communication with an interior volume of the hollow shaft, such that the fluid in the volume defined by the housing can be discharged from the volume, enabling fluid in the volume to be circulated to dissipate heat generated by the braking torque. 16. The rotary speed governor apparatus of claim 15, wherein the distal end of the shaft comprises a flow restriction configured to generate a pressure differential between the inlet and the outlet, to control circulation of the fluid in the volume defined by the housing. 17. A method for governing the speed of a fluid driven unit, comprising the steps of: (a) providing a source of pressurized fluid, and a governing unit; (b) directing the pressurized fluid first into the governing unit, and then into the fluid driven unit, the pressurized fluid directed into the fluid driven unit energizing the fluid driven unit, and rotating a volume of pressurized fluid in the governing unit, to impart both a circulating flow and a rotational flow to the volume of pressurized fluid in the governing unit; and (c) interrupting the rotational flow in the governing unit to generate a braking torque, thereby governing the speed of the fluid driven unit. 18. The method of claim 17, wherein the step of interrupting the rotational flow to generate a braking torque comprises the step of interrupting the rotational flow using a plurality of stators and rotors stacked in an alternating configuration, such that the magnitude of the braking torque is a function of a number of stators and rotors included in the stack. 19. The method of claim 18, further comprising the step of increasing a magnitude of the braking torque by introducing additional similarly oriented rotors and stators into the volume of fluid. 20. A method for governing the speed of a fluid driven unit, comprising the steps of: (a) providing a source of pressurized fluid, and a governing unit, the governing unit comprising a rotor, a shaft and a stator, wherein the shaft is drivingly coupled to the fluid driven unit, the rotor is rotated with the shaft, and the stator is fixed relative to the shaft and the rotor; (b) directing the pressurized fluid first into the governing unit, and then into the fluid driven unit, the pressurized fluid directed into the fluid driven unit energizing the fluid driven unit, thereby causing the shaft and rotor to rotate within the governing unit, the rotor imparting both a circulating flow and a rotational flow to the pressurized fluid in the governing unit; and (c) interrupting the rotational flow in the governing unit with the stator, to generate a braking torque imparted upon the rotor and shaft, thereby governing the speed of the fluid driven unit. 21. The method of claim 20, further comprising the step of increasing a magnitude of the braking torque by introducing additional rotors and stators into the volume of fluid, such that the rotors and stators are stacked in the governing unit in an alternating configuration. 22. The method of claim 20, wherein the fluid driven unit whose speed is being governed by the braking torque comprises at least one of an axial flow turbine and a reaction turbine rotor. 23. A method for governing the speed of a reaction turbine jet rotor, comprising the steps of: (a) providing a source of pressurized fluid, a governing unit comprising a shaft, a rotor, and a stator, the governing unit and the reaction turbine jet rotor being configured such that energizing the reaction turbine jet rotor results in rotation of the shaft in the governing unit; (b) directing a pressurized fluid into the governing unit, the pressurized fluid filling the braking unit and then flowing into the reaction turbine jet rotor, energizing the reaction turbine jet rotor, thereby causing the shaft and rotor in the governing unit to rotate within the pressurized fluid in the governing unit, the rotor imparting both a circulating flow and a rotational flow to the pressurized fluid in the governing unit; and (c) interrupting the rotational flow in the governing unit with the stator, to generate a braking torque imparted upon the rotor and shaft in the governing unit, thereby governing the speed of the reaction turbine jet rotor.
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