CA2126262A1 - Shaft mounted and impeller mounted pumping sleeve and bushing - Google Patents
Shaft mounted and impeller mounted pumping sleeve and bushingInfo
- Publication number
- CA2126262A1 CA2126262A1 CA002126262A CA2126262A CA2126262A1 CA 2126262 A1 CA2126262 A1 CA 2126262A1 CA 002126262 A CA002126262 A CA 002126262A CA 2126262 A CA2126262 A CA 2126262A CA 2126262 A1 CA2126262 A1 CA 2126262A1
- Authority
- CA
- Canada
- Prior art keywords
- stuffing box
- sleeve
- impeller
- pumping sleeve
- pumping
- 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.)
- Abandoned
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
- F04D29/047—Bearings hydrostatic; hydrodynamic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/106—Shaft sealings especially adapted for liquid pumps
- F04D29/108—Shaft sealings especially adapted for liquid pumps the sealing fluid being other than the working liquid or being the working liquid treated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
- F04D29/2266—Rotors specially for centrifugal pumps with special measures for sealing or thrust balance
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D3/00—Axial-flow pumps
- F04D3/02—Axial-flow pumps of screw type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
- F16J15/406—Sealings between relatively-moving surfaces by means of fluid by at least one pump
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a Shaft-Mounted and Impeller-Mounted Pumping Sleeve and Bushing. Various devices have been previously proposed for relieving the pressure inside the stuffing box of a pump. In practice, however, these devices have proven to be inefficient and expensive to install. Such devices use a centrifugal force to displace the fluid by the use of a repeller.
They do not perform the following functions:
A. circulate the fluid through the stuffing box B. regulate pressure in the stuffing box C. allow for any impeller adjustment as the impeller wears It is an objective of the present invention to avoid or minimise one or more of the above mentioned disadvantages.
They do not perform the following functions:
A. circulate the fluid through the stuffing box B. regulate pressure in the stuffing box C. allow for any impeller adjustment as the impeller wears It is an objective of the present invention to avoid or minimise one or more of the above mentioned disadvantages.
Description
212fi262 -SPECIFICATION
The present invention provides full adjustment to the impeller in case of wear. Any adjustment made occurs on the horizontal plane so that the clearances between the pumping sleeve and the bushing or stuffing box boar remain the same.
The present invention provides a positive displacement pumping action. This means that suction from the suction side of the pump goes through a cooler and regulator, then into the stuffing box, where it is then discharged into the discharge side of the pump.
The suction is therefore positive. This positive action can overcome the pressure of any centrifugal force present in the discharge.
The lip seal provides a fluid seal in a static position when the pump is not running and prevents fluid pressure from entering the stuffing box. The lip seal retains a dynamic position when the pump is running by means of fluid suction and flow, eliminating shaft wear.
The volume velocity and pressure can be calculated by the number and depth of the screws on the pumping sleeve in order to obtain the correct flow and pressure for different pumping applications.
The pumping sleeve and bushing can be made from any required material and installed to any A. N. S. I. or A. P. I. pump with little or no machining to the stuffing bo~. The sleeve can be manufactured with an anti-clockwise screw for the A. P. I. pump application.
The features and benefits of the invention will become clear through the following detailed description. They can also be referred to through the accompanying illustrations.
Figure 1. is a perspective view of the benefits of the invention.
Figures 2, 3 & 4. are a simulation of how, during use, a range of different number, depth and angle of pumping screws work.
Figures 5 & 6. illustrate the use of the impeller-mounted press pumplng sleeve.
Figure 7. is a shaft-mounted pumping sleeve and lip seal.
Figure 8. is a standard shaft sleeve installation.
Figure 9. is a shaft-mounted pumping sleeve installation.
Figure 10. is the front, side and cross-sectional view, as in figure 9., of the pumping sleeve.
Figure 11. is a standard shaft-mounted sleeve, as in figure 8.
In figure 7., the pumping sleeve is secured in position between the threaded end of the impeller and the threaded end of the shaft.
In figures 1, 5 & 6. is the press-fit impeller pumping sleeve and bushing.
In figure 1., the piping, cooler, pressure gauges, needle valve, pressure regulator, suction and discharge by-pass valves, pumping sleeve, bushing and lip seal are shown.
In figure 9., the shaft-mounted pumping assembly is shown.
Figure 12 & 13. illustrate the use of a tapper bore spring-loaded pumping sleeve and bushing face-to-face contact for positive pumping action.
Figure 14 & 15. shows a cross-section and installation of a pumping sleeve and bushing for small bore stuffing box.
The present invention provides full adjustment to the impeller in case of wear. Any adjustment made occurs on the horizontal plane so that the clearances between the pumping sleeve and the bushing or stuffing box boar remain the same.
The present invention provides a positive displacement pumping action. This means that suction from the suction side of the pump goes through a cooler and regulator, then into the stuffing box, where it is then discharged into the discharge side of the pump.
The suction is therefore positive. This positive action can overcome the pressure of any centrifugal force present in the discharge.
The lip seal provides a fluid seal in a static position when the pump is not running and prevents fluid pressure from entering the stuffing box. The lip seal retains a dynamic position when the pump is running by means of fluid suction and flow, eliminating shaft wear.
The volume velocity and pressure can be calculated by the number and depth of the screws on the pumping sleeve in order to obtain the correct flow and pressure for different pumping applications.
The pumping sleeve and bushing can be made from any required material and installed to any A. N. S. I. or A. P. I. pump with little or no machining to the stuffing bo~. The sleeve can be manufactured with an anti-clockwise screw for the A. P. I. pump application.
The features and benefits of the invention will become clear through the following detailed description. They can also be referred to through the accompanying illustrations.
Figure 1. is a perspective view of the benefits of the invention.
Figures 2, 3 & 4. are a simulation of how, during use, a range of different number, depth and angle of pumping screws work.
Figures 5 & 6. illustrate the use of the impeller-mounted press pumplng sleeve.
Figure 7. is a shaft-mounted pumping sleeve and lip seal.
Figure 8. is a standard shaft sleeve installation.
Figure 9. is a shaft-mounted pumping sleeve installation.
Figure 10. is the front, side and cross-sectional view, as in figure 9., of the pumping sleeve.
Figure 11. is a standard shaft-mounted sleeve, as in figure 8.
In figure 7., the pumping sleeve is secured in position between the threaded end of the impeller and the threaded end of the shaft.
In figures 1, 5 & 6. is the press-fit impeller pumping sleeve and bushing.
In figure 1., the piping, cooler, pressure gauges, needle valve, pressure regulator, suction and discharge by-pass valves, pumping sleeve, bushing and lip seal are shown.
In figure 9., the shaft-mounted pumping assembly is shown.
Figure 12 & 13. illustrate the use of a tapper bore spring-loaded pumping sleeve and bushing face-to-face contact for positive pumping action.
Figure 14 & 15. shows a cross-section and installation of a pumping sleeve and bushing for small bore stuffing box.
Claims
The pumping sleeve acts as a vibration damper. As the fluid is being pumped by the sleeve is being positively displaced, it acts to stabilize the impeller and overcome shaft deflections.
The pumping sleeve lowers the pressure in the stuffing box to one atmosphere, if desired, through the use of a regulator.
The pumping sleeve reduces the temperature in the stuffing box to ambient, if desired, by the use of a cooler.
The pumping sleeve will, in the case of a mechanical seal or packing failure, eliminate fluid leakage to atmosphere by lowering the pressure in the stuffing box. In doing so, it also eliminates the flash point of a flammable liquid by lowering the temperature in the stuffing box.
The pumping sleeve will increase mechanical seal life by lowering the pressure and the temperature in the stuffing box. With less vibration, the pump will run more efficiently, resulting in less mechanical failures.
The pumping sleeve lowers the pressure in the stuffing box to one atmosphere, if desired, through the use of a regulator.
The pumping sleeve reduces the temperature in the stuffing box to ambient, if desired, by the use of a cooler.
The pumping sleeve will, in the case of a mechanical seal or packing failure, eliminate fluid leakage to atmosphere by lowering the pressure in the stuffing box. In doing so, it also eliminates the flash point of a flammable liquid by lowering the temperature in the stuffing box.
The pumping sleeve will increase mechanical seal life by lowering the pressure and the temperature in the stuffing box. With less vibration, the pump will run more efficiently, resulting in less mechanical failures.
Priority Applications (12)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002126262A CA2126262A1 (en) | 1994-06-20 | 1994-06-20 | Shaft mounted and impeller mounted pumping sleeve and bushing |
| EP95922374A EP0769111B1 (en) | 1994-06-20 | 1995-06-19 | Combined seal and bearing assembly apparatus |
| PCT/CA1995/000362 WO1995035457A1 (en) | 1994-06-20 | 1995-06-19 | Seal/bearing assembly |
| GB9626495A GB2304159B (en) | 1994-06-20 | 1995-06-19 | Seal/bearing assembly |
| JP8501433A JP3050407B2 (en) | 1994-06-20 | 1995-06-19 | Seal / bearing assembly |
| AU27093/95A AU689906C (en) | 1994-06-20 | 1995-06-19 | Seal/bearing assembly |
| AT95922374T ATE222332T1 (en) | 1994-06-20 | 1995-06-19 | DEVICE WITH COMBINED SEAL/BEARING ARRANGEMENT |
| DE69527795T DE69527795T2 (en) | 1994-06-20 | 1995-06-19 | DEVICE WITH COMBINED SEAL / BEARING ARRANGEMENT |
| CA002193482A CA2193482C (en) | 1994-06-20 | 1995-06-19 | Seal/bearing assembly |
| NO965488A NO965488L (en) | 1994-06-20 | 1996-12-19 | Tetning- / bearing assembly |
| US08/770,044 US5827042A (en) | 1994-06-20 | 1996-12-19 | Seal/bearing assembly |
| FI965142A FI113888B (en) | 1994-06-20 | 1996-12-20 | Device for rotating shaft |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002126262A CA2126262A1 (en) | 1994-06-20 | 1994-06-20 | Shaft mounted and impeller mounted pumping sleeve and bushing |
| US08/770,044 US5827042A (en) | 1994-06-20 | 1996-12-19 | Seal/bearing assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2126262A1 true CA2126262A1 (en) | 1995-12-21 |
Family
ID=25677329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002126262A Abandoned CA2126262A1 (en) | 1994-06-20 | 1994-06-20 | Shaft mounted and impeller mounted pumping sleeve and bushing |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2126262A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445027A (en) * | 2015-11-26 | 2016-03-30 | 哈尔滨电机厂有限责任公司 | Waterpower testing stand shaft end assembling structure having self-centering function |
| EP3343041A1 (en) * | 2017-01-03 | 2018-07-04 | Hamilton Sundstrand Corporation | Vane pump seal |
| CN111810410A (en) * | 2020-07-07 | 2020-10-23 | 长沙中联泵业股份有限公司 | Multistage centrifugal pump with novel axial force balancing device and design method of balancing device |
-
1994
- 1994-06-20 CA CA002126262A patent/CA2126262A1/en not_active Abandoned
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445027A (en) * | 2015-11-26 | 2016-03-30 | 哈尔滨电机厂有限责任公司 | Waterpower testing stand shaft end assembling structure having self-centering function |
| EP3343041A1 (en) * | 2017-01-03 | 2018-07-04 | Hamilton Sundstrand Corporation | Vane pump seal |
| US10519951B2 (en) | 2017-01-03 | 2019-12-31 | Hamilton Sundstrand Corporation | Vane pump seal |
| US10935026B2 (en) | 2017-01-03 | 2021-03-02 | Hamilton Sunstrand Corporation | Vane pump seal |
| CN111810410A (en) * | 2020-07-07 | 2020-10-23 | 长沙中联泵业股份有限公司 | Multistage centrifugal pump with novel axial force balancing device and design method of balancing device |
| CN111810410B (en) * | 2020-07-07 | 2024-05-14 | 长沙中联泵业股份有限公司 | Multistage centrifugal pump with axial force balancing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3085808A (en) | Mechanical seal with controlled leakage | |
| KR840006042A (en) | Rotary Fluid Machine Reduces Fluid Leakage | |
| US2910003A (en) | Pump control | |
| Tackett et al. | Positive displacement reciprocating pump fundamentals-power and direct acting types | |
| EP0156096A2 (en) | Shaft seal | |
| US4990055A (en) | Dynamic seal with flushing protection of static seal | |
| US3180134A (en) | Leak detector for oil well pump | |
| CA2126262A1 (en) | Shaft mounted and impeller mounted pumping sleeve and bushing | |
| JPS5819880B2 (en) | Kouatsu Atsushi Yukuki | |
| US2098014A (en) | Pipe line system and valve therefor | |
| US20230323969A1 (en) | Valve spring holder, valve box, and plunger pump | |
| US20190301448A1 (en) | Self-lubricating pump throat seal | |
| US2077394A (en) | Liquid sealed pump | |
| US5984315A (en) | Reclamation system for a hydraulic pump system | |
| CN209638072U (en) | A kind of device of thermal power plant's pure condensate wet type cooling unit low-pressure pump mechanical seal | |
| US6843481B1 (en) | Fluid-moving device with a clearance seal | |
| US3289595A (en) | High pressure canned motor pump | |
| US5069278A (en) | Leakage control device | |
| EP0134768A1 (en) | Screw pump | |
| CN203239619U (en) | Oil leakage prevention device used for fan bearing box | |
| US2328698A (en) | Pressure system for liquid seal shaft packings and the like | |
| CN109751278A (en) | The method and device of thermal power plant's pure condensate wet type cooling unit low-pressure pump mechanical seal | |
| US2206079A (en) | Pump | |
| US943169A (en) | Packing for stuffing-boxes. | |
| JPH09303281A (en) | Structure of double barrel multistage pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |