IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0399540
(2006-04-05)
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등록번호 |
US-7335313
(2008-02-26)
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발명자
/ 주소 |
|
출원인 / 주소 |
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대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
35 인용 특허 :
14 |
초록
▼
Disclosed is a vortex-based centrifugal separator for removing solids from a liquid/solids fluid stream in two stages. A fluid stream under pressure is introduced at the top of the cylindrical separator at a tangential angle forming helical downward flow. The first stage uses a centrally-located spi
Disclosed is a vortex-based centrifugal separator for removing solids from a liquid/solids fluid stream in two stages. A fluid stream under pressure is introduced at the top of the cylindrical separator at a tangential angle forming helical downward flow. The first stage uses a centrally-located spin plate for reversing the cleaner interior flow of the vortex back upward, while the heavier solids settle at the bottom of the chamber for periodic removal. In the second stage, a plurality of louvered slots in an upper discharge pipe remove finer solids from the exiting upward fluid flow prior to discharge.
대표청구항
▼
What is claimed is: 1. A centrifugal liquid/solids separator comprising: a. a vessel having a cylindrical side wall, and upper and lower end walls forming an interior chamber, said chamber having an upper section and a lower section; b. an inlet in said cylindrical wall near the upper end wall for
What is claimed is: 1. A centrifugal liquid/solids separator comprising: a. a vessel having a cylindrical side wall, and upper and lower end walls forming an interior chamber, said chamber having an upper section and a lower section; b. an inlet in said cylindrical wall near the upper end wall for introducing fluid under pressure at an angle that is generally tangential to said cylindrical side wall; c. an outlet pipe axially mounted in the upper end wall of said vessel, said outlet pipe having a cylindrical wall of lesser diameter than said vessel, a hollow interior, an upper portion that extends out from said upper end wall to a first end, and a lower portion that extends into the upper section of said chamber to a second end; d. a helical ring attached around the cylindrical wall of said outlet pipe at the second end thereof such that said ring protrudes into the upper section of said chamber; e. a plurality of radially spaced apart axially-extending openings passing through the wall of said outlet pipe in the vicinity of said helical ring fluidly interconnecting the interior of said outlet pipe and the upper section of said chamber; and f. a discharge opening in the lower end wall of said vessel. 2. The separator of claim 1 wherein a flow restricting valve is provided in said inlet for increasing the velocity of fluid under pressure introduced through said inlet. 3. The separator of claim 2 wherein said flow restricting valve has a parabolic shape. 4. A centrifugal liquid/solids separator comprising: a. a vessel having a cylindrical side wall, and upper and lower end walls forming an interior chamber, said chamber having an upper section and a lower section; b. an inlet in said cylindrical wall near the upper end wall for introducing fluid under pressure at an angle that is generally tangential to said cylindrical side wall; c. an outlet pipe axially mounted in the upper end wall of said vessel, said outlet pipe having a cylindrical wall of lesser diameter than said vessel, a hollow interior, an upper portion that extends out from said upper end wall to a first end, and a lower portion that extends into the upper section of said chamber to a second end; d. a discontinuous helical ring attached around the cylindrical wall of said outlet pipe at the second end thereof such that said ring protrudes into the upper section of said chamber; e. a plurality of radially spaced apart axially-extending openings passing through the wall of said outlet pipe in the vicinity of said helical ring fluidly interconnecting the interior of said outlet pipe and the upper section of said chamber; and f. a discharge opening in the lower end wall of said vessel. 5. A centrifugal liquid/solids separator comprising: a. a vessel having a cylindrical side wall, and upper and lower end walls forming an interior chamber, said chamber having an upper section and a lower section; b. an inlet in said cylindrical wall near the upper end wall for introducing fluid under pressure at an angle that is generally tangential to said cylindrical side wall; c. an outlet pipe axially mounted in the upper end wall of said vessel, said outlet pipe having a cylindrical wall of lesser diameter than said vessel, a hollow interior, an upper portion that extends out from said upper end wall to a first end, and a lower portion that extends into the upper section of said chamber to a second end; d. a helical ring attached around the cylindrical wall of said outlet pipe at the second end thereof such that said ring protrudes into the upper section of said chamber; e. a plurality of radially spaced apart axially-extending openings passing through the wall of said outlet pipe in the vicinity of said helical ring fluidly interconnecting the interior of said outlet pipe and the upper section of said chamber; f. an axially oriented circular spin plate of small diameter extending across a portion of said chamber in the lower section thereof; and g. a discharge opening in the lower end wall of said vessel. 6. The separator of claim 5 wherein a plurality of air breaker vanes are provided in the upper section of said chamber extending radially between the cylindrical wall of said vessel and said outlet pipe. 7. The separator of claim 5 wherein the surface of said spin plate is concave. 8. A centrifugal liquid/solids separator comprising: a. a vessel having a cylindrical side wall, and upper and lower end walls forming an interior chamber, said chamber having an upper section and a lower section; b. an inlet in said cylindrical wall near the upper end wall for introducing fluid under pressure at an angle that is generally tangential to said cylindrical side wall; c. an outlet pipe axially mounted in the upper end wall of said vessel, said outlet pipe having a cylindrical wall of lesser diameter than said vessel, a hollow interior, an upper portion that extends out from said upper end wall to a first end, and a lower portion that extends into the upper section of said chamber to a second end; d. a helical ring attached around the cylindrical wall of said outlet pipe at the second end thereof such that said ring protrudes into the upper section of said chamber; e. a plurality of radially spaced apart axially-extending openings passing through the wall of said outlet pipe in the vicinity of said helical ring fluidly interconnecting the interior of said outlet pipe and the upper section of said chamber; f. an axially oriented circular spin plate having a diameter, said spin plate extending across a portion of said chamber in the lower section thereof and defining an annular gap between the edge of said spin plate and the cylindrical wall of said vessel; and g. a discharge opening in the lower end wall of said vessel. 9. The separator of claim 8 wherein a plurality of spin arrestor vanes are provided in the lower section of said chamber above said spin plate, extending radially across the annular gap between said spin plate and the cylindrical wall of said vessel. 10. The separator of claim 8 wherein a plurality of baffles are provided in the lower section of said chamber below said spin plate said baffles extending radially between the center of said chamber and the cylindrical vessel wall. 11. The separator of claim 8 wherein a plurality of spin arrestor vanes are provided in the lower section of said chamber above said spin plate, extending radially across the annular gap between said spin plate and the cylindrical wall of said vessel, and wherein a plurality of baffles are provided in the lower section of said chamber below said spin plate said baffles extending radially between the center of said chamber and the cylindrical vessel wall. 12. The separator of claim 11 wherein a plurality of air breaker vanes are provided in the upper section of said chamber extending radially between the cylindrical wall of said vessel and said outlet pipe. 13. The separator of claim 8 wherein a plurality of air breaker vanes are provided in the upper section of said chamber extending radially between the cylindrical wall of said vessel and said outlet pipe. 14. A centrifugal liquid/solids separator comprising: a. a vessel having a cylindrical side wall, and upper and lower end walls forming an interior chamber, said chamber having an upper section and a lower section; b. an inlet in said cylindrical wall near the upper end wall for introducing fluid under pressure at an angle that is generally tangential to said cylindrical side wall; c. an outlet pipe axially mounted in the upper end wall of said vessel, said outlet pipe having a cylindrical wall of lesser diameter than said vessel, a hollow interior, an upper portion that extends out from said upper end wall to a first end, and a lower portion that extends into the upper section of said chamber to a second end; d. a helical ring attached around the cylindrical wall of said outlet pipe at the second end thereof such that said ring protrudes into the upper section of said chamber; e. a plurality of radially spaced apart axially-extending openings passing through the wall of said outlet pipe in the vicinity of said helical ring fluidly interconnecting the interior of said outlet pipe and the upper section of said chamber; f. a pair of axially oriented circular spin plates of different diameters provided in the lower section of said chamber; and g. a discharge opening in the lower end wall of said vessel. 15. The separator of claim 14 wherein the surface of one of said spin plates is selected from the group consisting of flat, conical and concaved; and the surface of the other of said spin plates is selected from the group consisting of flat, conical and concaved. 16. A centrifugal liquid/solids separator comprising: a. a vessel having a cylindrical side wall, and upper and lower end walls forming an interior chamber, said chamber having an upper section and a lower section; b. an inlet in said cylindrical wall near the upper end wall for introducing fluid under pressure at an angle that is generally tangential to said cylindrical side wall; c. an outlet pipe axially mounted in the upper end wall of said vessel, said outlet pipe having a cylindrical wall of lesser diameter than said vessel, a hollow interior, an upper portion that extends out from said upper end wall to a first end, and a lower portion that extends into the upper section of said chamber to a second end; d. a helical ring attached around the cylindrical wall of said outlet pipe at the second end thereof such that said ring protrudes into the upper section of said chamber; e. a plurality of radially spaced apart axially-extending openings passing through the wall of said outlet pipe in the vicinity of said helical ring fluidly interconnecting the interior of said outlet pipe and the upper section of said chamber; f. an upper axially oriented circular spin plate of small diameter extending across a portion of said chamber in the lower section thereof; g. a lower axially oriented circular spin plate having a diameter, said lower spin plate extending across a portion of said chamber in the lower section thereof and defining an annular gap between the edge of said lower spin plate and the cylindrical wall of said vessel; h. a plurality of air breaker vanes provided in the upper section of said chamber extending radially between the cylindrical wall of said vessel and said outlet pipe; i. a plurality of spin arrestor vanes provided in the lower section of said chamber above said lower spin plate, extending radially across the annular gap between said lower spin plate and the cylindrical wall of said vessel; j. a plurality of baffles provided in the lower section of said chamber below said lower spin plate said baffles extending radially between the center of said chamber and the cylindrical vessel wall; and k. a discharge opening in the lower end wall of said vessel. 17. A centrifugal liquid/solids separator comprising: a. a vessel having a cylindrical side wall, and upper and lower end walls forming an interior chamber, said chamber having an upper section and a lower section; b. an inlet in said cylindrical wall near the upper end wall for introducing fluid under pressure at an angle that is generally tangential to said cylindrical side wall; c. an outlet pipe axially mounted in the upper end wall of said vessel, said outlet pipe having a cylindrical wall of lesser diameter than said vessel, a hollow interior, an upper portion that extends out from said upper end wall to a first end, and a lower portion that extends into the upper section of said chamber to a second end; d. an upper axially oriented circular spin plate of small diameter extending across a portion of said chamber in the lower section thereof e. a lower axially oriented circular spin plate having a diameter, said lower spin plate extending across a portion of said chamber in the lower section thereof and defining an annular gap between the edge of said lower spin plate and the cylindrical wall of said vessel; and f. a discharge opening in the lower end wall of said vessel. 18. The separator of claim 17 wherein a plurality of spin arrestor vanes are provided in the lower section of said chamber above said lower spin plate, extending radially across the annular gap between said lower spin plate and the cylindrical wall of said vessel. 19. The separator of claim 17 wherein a plurality of baffles are provided in the lower section of said chamber below said lower spin plate said baffles extending radially between the center of said chamber and the cylindrical vessel wall. 20. The separator of claim 17 wherein a plurality of air breaker vanes are provided in the upper section of said chamber extending radially between the cylindrical wall of said vessel and said outlet pipe. 21. The separator of claim 17 wherein a plurality of spin arrestor vanes are provided in the lower section of said chamber above said lower spin plate, extending radially across the annular gap between said lower spin plate and the cylindrical wall of said vessel, and wherein a plurality of baffles are provided in the lower section of said chamber below said lower spin plate said baffles extending radially between the center of said chamber and the cylindrical vessel wall. 22. The separator of claim 17 wherein a plurality of spin arrestor vanes are provided in the lower section of said chamber above said lower spin plate, extending radially across the annular gap between said lower spin plate and the cylindrical wall of said vessel, and wherein a plurality of baffles are provided in the lower section of said chamber below said lower spin plate said baffles extending radially between the center of said chamber and the cylindrical vessel wall, and wherein a plurality of air breaker vanes are provided in the upper section of said chamber extending radially between the cylindrical wall of said vessel and said outlet pipe. 23. A centrifugal liquid/solids separator comprising: a. a vessel having a cylindrical side wall, and upper and lower end walls forming an interior chamber, said chamber having an upper section and a lower section; b. an inlet in said cylindrical wall near the upper end wall for introducing fluid under pressure at an angle that is generally tangential to said cylindrical side wall; c. an outlet pipe axially mounted in the upper end wall of said vessel, said outlet pipe having a cylindrical wall of lesser diameter than said vessel, a hollow interior, an upper portion that extends out from said upper end wall to a first end, and a lower portion that extends into the upper section of said chamber to a second end; d. an upper axially oriented circular spin plate of small diameter extending across a portion of said chamber in the lower section thereof e. a lower axially oriented circular spin plate having a diameter, said lower spin plate extending across a portion of said chamber in the lower section thereof and defining an annular gap between the edge of said lower spin plate and the cylindrical wall of said vessel; f. a plurality of air breaker vanes provided in the upper section of said chamber extending radially between the cylindrical wall of said vessel and said outlet pipe; g. a plurality of spin arrestor vanes provided in the lower section of said chamber above said lower spin plate, extending radially across the annular gap between said lower spin plate and the cylindrical wall of said vessel; h. a plurality of baffles provided in the lower section of said chamber below said lower spin plate said baffles extending radially between the center of said chamber and the cylindrical vessel wall; and i. a discharge opening in the lower end wall of said vessel. 24. A centrifugal liquid/solids separator comprising: a. a vessel having a cylindrical side wall, and upper and lower end walls forming an interior chamber, said chamber having an upper section and a lower section; b. an inlet in said cylindrical wall near the upper end wall for introducing fluid under pressure at an angle that is generally tangential to said cylindrical side wall; c. an outlet pipe axially mounted in the upper end wall of said vessel, said outlet pipe having a cylindrical wall of lesser diameter than said vessel, a hollow interior, an upper portion that extends out from said upper end wall to a first end, and a lower portion that extends into the upper section of said chamber to a second end said second end having a flared section forming a bell shape; d. a helical ring attached around the cylindrical wall of said outlet pipe at the second end thereof such that said ring protrudes into the upper section of said chamber; e. a plurality of radially spaced apart axially-extending openings passing through the wall of said outlet pipe in the vicinity of said helical ring fluidly interconnecting the interior of said outlet pipe and the upper section of said chamber; and f. a discharge opening in the lower end wall of said vessel. 25. A method for separating solids from a liquid/solids fluid stream comprising the steps of: a. introducing a pressurized fluid stream containing solids and liquids into an upper section of a cylindrical vessel at generally tangential angle to induce a rotational flow inside said vessel; b. pushing the heavier solids in said fluid stream outward by centrifugal force; c. guiding said fluid stream into a downward spiral using a centrally located helical ridge; d. moving the solids in said downwardly spiraling fluid stream along the inside of the cylindrical vessel to a lower collection chamber in said vessel; e. reversing the direction of flow of the central portion of said downwardly spiraling fluid stream using an axially oriented central spin plate causing said central portion to spiral upward; f. receiving said upwardly spiraling central portion of said fluid stream into an upper exit pipe that is axially attached at the top of said cylindrical vessel; g. separating finer solids from said upwardly spiraling fluid stream through a plurality of radially spaced apart axially-extending openings in said exit pipe, said openings interconnecting the interior of said exit pipe and the upper section of said vessel; h. discharging the remainder of said upwardly spiraling fluid stream through said exit pipe; and i. periodically purging the solids from said lower collection chamber. 26. The method of claim 25 comprising the additional step of narrowing the upwardly spiraling fluid stream as it enters said exit pipe using an annular choke ring. 27. The method of claim 25 comprising the additional step of restricting the input of said pressurized fluid stream to increase the flow fate inside the vessel. 28. The method of claim 25 comprising the additional steps of separating air bubbles from the rotational flow in the upper section of said vessel using a plurality of air breaker vanes adjacent to said input, and periodically removing said separated air using a relief valve. 29. The method of claim 25 comprising the additional steps of interrupting the downwardly spiraling fluid stream using a plurality of spin arrestor vanes located below said spin plate and extending radially toward the cylindrical wall of said vessel to stop said rotational flow. 30. The method of claim 25 comprising the additional step of settling said solids using a plurality of baffles located in the lower section of said vessel. 31. The method of claim 25 comprising the additional step of separating finer solids from said upwardly spiraling fluid stream through a plurality of radially spaced apart axially-extending openings in said exit pipe, said openings interconnecting the interior of said exit pipe and the upper section of said vessel. 32. A centrifugal liquid/solids separator comprising: a. a vessel having a cylindrical side wall, and upper and lower end walls forming an interior chamber, said chamber having an upper section and a lower section; b. an inlet in said cylindrical wall near the upper end wall for introducing fluid under pressure at an angle that is generally tangential to said cylindrical side wall; c. an outlet pipe axially mounted in the upper end wall of said vessel, said outlet pipe having a cylindrical wall of lesser diameter than said vessel, a hollow interior, an upper portion that extends out from said upper end wall to a first end, and a lower portion that extends into the upper section of said chamber to a second end; d. a helical ring attached around the cylindrical wall of said outlet pipe at the second end thereof such that said ring protrudes into the upper section of said chamber; e. a plurality of openings passing through the wall of said outlet pipe fluidly interconnecting the interior of said outlet pipe and the upper section of said chamber, said openings being provided below an inner annular shoulder of said outlet pipe; and f. a discharge opening in the lower end wall of said vessel. 33. A centrifugal liquid/solids separator comprising: a. vessel having a cylindrical side wall, and upper and lower end walls forming an interior chamber, said chamber having an upper section and a lower section; b. an inlet in said cylindrical wall near the upper end wall for introducing fluid under pressure at an angle that is generally tangential to said cylindrical side wall; c. an outlet pipe axially mounted in the upper end wall of said vessel, said outlet pipe having a cylindrical wall of lesser diameter than said vessel, a hollow interior, an upper portion that extends out from said upper end wall to a first end, and a lower portion that extends into the upper section of said chamber to a second end; d. a helical ring attached around the cylindrical wall of said outlet pipe at the second end thereof such that said ring protrudes into the upper section of said chamber; e. a plurality of openings passing through the wall of said outlet pipe in the vicinity of said helical ring fluidly interconnecting the interior of said outlet pipe and the upper section of said chamber; and f. a discharge opening in the lower end wall of said vessel.
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