EP3287643B1 - Pompe pourvue d'un joint torique monté sur le bord - Google Patents
Pompe pourvue d'un joint torique monté sur le bord Download PDFInfo
- Publication number
- EP3287643B1 EP3287643B1 EP17186912.6A EP17186912A EP3287643B1 EP 3287643 B1 EP3287643 B1 EP 3287643B1 EP 17186912 A EP17186912 A EP 17186912A EP 3287643 B1 EP3287643 B1 EP 3287643B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- ring
- impeller
- housing
- pump housing
- 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.)
- Active
Links
- 239000012530 fluid Substances 0.000 claims description 20
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000001172 regenerating effect Effects 0.000 description 3
- 239000003673 groundwater Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000036512 infertility Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
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
- F04D5/00—Pumps with circumferential or transverse flow
- F04D5/002—Regenerative pumps
-
- 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
- F04D29/16—Sealings between pressure and suction sides
- F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
- F04D29/168—Sealings between pressure and suction sides especially adapted for liquid pumps of an axial flow wheel
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/128—Adaptation of pump systems with down-hole electric drives
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
- F04D13/10—Units comprising pumps and their driving means the pump being electrically driven for submerged use adapted for use in mining bore holes
-
- 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
- F04D29/086—Sealings especially adapted for liquid pumps
-
- 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
- F04D29/181—Axial flow rotors
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4273—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps suction eyes
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/528—Casings; Connections of working fluid for axial pumps especially adapted for liquid pumps
-
- 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
- F04D3/005—Axial-flow pumps with a conventional single stage rotor
Definitions
- the present disclosure relates to fluid pumps, and more particularly to a fluid pump that includes an edge mounted O-ring seal that significantly improves the pressure that can be generated within the pump without leakage past the O-ring seal.
- O-ring seals are frequently used in various types of pumps to provide a seal between two parallel surfaces, and more typically between two parallel metal surfaces. Typically, such O-rings are used on planar, facing metal surfaces. However, in certain applications where the internal pressures required to pump a fluid, such as a deep groundwater sampling well, are significant, such conventional O-ring implementations are fairly limited in the internal pressure that they can accommodate before allowing a leak to occur.
- a fluid pump for example a fluid pump used in well bores of groundwater sampling wells, would extend the capability of existing pumps and allow existing pumps to accommodate even higher internal pressures than what is presently possible with conventionally mounted O-ring seals.
- the ability to accommodate greater internal pressures would be especially useful in regenerative fluid pumps, which are capable of generating significantly greater internal pressures, and which are used in especially deep well bore extending 100 meters or more below the ground surface.
- EP 1327781 discloses a pump in which all the parts of the pump coming into contact with the material being pumped are made of a material which meets the appropriate requirements for sterility, or are coated with such a material.
- the induction cover and the flow channel housing like all the other static components open to the functional cavities, are sealed off from each other.
- EP 2366905 discloses a multi-stage pump comprising an external jacket with a suction port and a delivery port, provided at one end with a casing cover and at the opposite end with a lantern bracket supporting an electric motor associated with rotary pumping members.
- the casing cover and the lantern bracket are coupled to the ends of the external jacket through fixing means with the interposition of annular gaskets.
- Each gasket is housed in an annular seat defined by a shaped annular area present in the casing cover and the lantern bracket and by a counter-shaped annular area present in the corresponding end of the external jacket, opposing each other.
- JP H06-229393 discloses a pump in which an impeller is arranged in an intake side casing, and an opening port communicated with a rotor chamber is provided on the end part of the intake side of a motor frame in a canned motor.
- An end plate for blocking the rotor chamber is provided on the end part of the discharging side of the motor frame.
- a cyclone separator main body part provided with a cylindrical part, a circular part extending from the cylindrical part, an intake port provided on the cylindrical part, and a discharging port provided on the end part of the circular part is provided integratedly on the outside of the end plate and in the discharging side casing.
- An opening port communicated with the rotor chamber is provided inward of radial direction of the end plate.
- a fluid pump as defined in claim 1.
- a pump 10 is shown in accordance with one embodiment of the present disclosure.
- the pump 10 is a regenerative pump constructed in large part in accordance with the description provided in co-pending U.S. Non-Provisional Application Serial No. 15/100,904, filed June 1, 2016 (16783-000123-US-NPB).
- the pump 10 of the present disclosure differs only from the pump shown in co-pending U.S. Application Serial No. 15/100,904 in the seal that is provided adjacent to a regenerative pump impeller, as will be described below in detail.
- the pump 10 generally includes a tubular metal pump housing 12 having a housing end wall 14 with fluid inlet ports 15.
- a motor 16 which may be a DC or AC powered motor, having an output shaft 18.
- DC motor a DC motor
- the pump 10 is equally well suited to use with AC or DC motors.
- the output shaft 18 of the DC motor 16 drives an impeller 20 via a connection to an impeller retainer 22.
- the impeller 20 is disposed between the impeller retainer 22 and an impeller housing 24.
- An outlet end cap 26 is disposed at an opposite end of the pump housing 12 and includes a discharge bore 28 through which fluid which has entered the pump 10 is pumped out from the pump.
- a suitable hose (not shown) may be coupled to the discharge bore 28 through which the fluid may be pumped up a wellbore within which the pump 10 is positioned to a collection tank or reservoir.
- a conduit 30 forms a means for making an electrical connection with the DC motor 16 to power the DC motor.
- a circuit board 32 is also positioned within the pump housing 12 for assisting in controlling the DC motor 16 and controlling overall operation of the pump 10.
- the impeller retainer 22 includes a supply channel 34 formed therein, and the impeller 20 includes a channel 20a which communicates with the supply channel 34 and is used to pump fluid to a discharge channel (not visible in Figure 2 ) in the impeller housing 24.
- a discharge channel not visible in Figure 2
- Disposed at a corner of the impeller retainer 22 and impeller housing 24 interface is an O-ring 36 which seals the interface area between these two components.
- the O-ring 36 is supported in a new edge mounted configuration that provides significantly improved pump performance by enabling a significantly increased internal pressure that can be accommodated by the pump 10.
- the edge mounting of the O-ring 36 is accomplished by providing a radiused edge 38 on an upper peripheral corner of the impeller retainer 22.
- the O-ring 36 is only partially seated within the radiused edge 38.
- the radius of curvature of the radiused edge 38 is preferably about the same as, and more preferably exactly the same as, the radius of the O-ring 36.
- the housing end wall 14 includes an extending portion 14a having a flat surface 14b which makes contact with the O-ring 36 and helps to cause a controlled deformation of the O-ring 36.
- the O-ring 36 is also contacted by an upper flat surface 24a of a leg 24b of the impeller housing 24.
- Directional arrow 40 extends generally at about a 45 degree angle relative to the pump housing 12. The 45 degree angle of the bulge provides a first vector component which pushes upwardly against the flat surface 14b of the extending portion 14a of the housing end wall 14, while simultaneously pushing outwardly along a horizontal vector against an inner wall surface 12a of the pump housing 12.
- FIG. 1 and 2 illustrate the edge supported O-ring 36 shown in Figures 1 and 2 enables significantly higher internal pump pressures to be handled which would not be possible with a conventional O-ring mounting.
- Figure 3 illustrates the significantly increased pressures that the O-ring 36 enables relative to a conventional O-ring seal.
- the graph 42 represents the pressures achievable using the O-ring 36
- graph 44 represents the pressures achievable by a conventional O-ring seal.
- the edge-mounted O-ring 36 of the present pump 10 described herein does not require additional component parts to be included in the pump, nor does it require extensive modifications to the internal components of the pump.
- the edge mounted O-ring 36 construction also does not require significant modifications to the assembly procedure for assembling the pump 10, nor does it add appreciably to the overall cost or complexity of the pump 10.
- the significantly increased pressures that the pump 10 can accommodate enable the pump to be used to pump liquids at depths that would have heretofore been impossible to pump from with a conventional O-ring sealing construction.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Claims (9)
- Pompe à fluide (10) comprenant :un boîtier de pompe (12) ;une partie de paroi d'entrée (14) positionnée à côté du boîtier de pompe et comprenant une partie allongée (14a) s'étendant généralement parallèlement à une surface de paroi intérieure (12a) du boîtier de pompe ;un moteur (16) logé à l'intérieur du boîtier de pompe ;une turbine de pompe (20) réagissant au moteur ;un dispositif de retenue de turbine (22) disposé à côté de la turbine et comprenant un bord arrondi (38) sur un coin périphérique extérieur du dispositif de retenue de turbine (22) ; etun joint torique (36) positionné au niveau du bord arrondi, le joint torique exerçant une force non perpendiculaire à la surface de paroi intérieure (12a) du boîtier de pompe pour former un joint d'étanchéité contre la surface de paroi intérieure (12a) du boîtier de pompe ;dans laquelle le joint torique (36) exerce une force à un angle d'environ 45 degrés par rapport à la surface de paroi intérieure (12a) du boîtier de pompe (12) ;dans laquelle seule une partie mineure du joint torique (36) est placée dans le bord arrondi du dispositif de retenue de turbine (22) ; etcaractérisée en ce quele joint torique forme également un joint d'étanchéité contre la partie allongée de la partie de paroi d'entrée.
- Pompe à fluide selon la revendication 1, dans laquelle le joint torique présente un rayon approximativement égal à un rayon du bord arrondi.
- Pompe à fluide selon la revendication 1 ou la revendication 2, comprenant en outre un boîtier de turbine (24) positionné à l'intérieur du boîtier de pompe pour accueillir la turbine, le boîtier de turbine comprenant une partie de jambe (24b) faisant saillie à partir de celui-ci.
- Pompe à fluide selon la revendication 3, dans laquelle la partie de jambe fait saillie parallèlement à la surface de paroi intérieure (12a) du boîtier de pompe, tout en étant adjacente à celle-ci.
- Pompe à fluide selon la revendication 3 ou la revendication 4, dans laquelle le joint torique touche une surface de la partie de jambe.
- Pompe à fluide selon l'une quelconque des revendications précédentes, dans laquelle le joint torique forme un renflement pour exercer la force à un angle d'approximativement 45 degrés par rapport à la surface de paroi intérieure (12a) du boîtier de pompe.
- Pompe à fluide selon l'une quelconque des revendications précédentes, dans laquelle le bord arrondi touche une partie mineure du joint torique.
- Pompe à fluide selon l'une quelconque des revendications 3 à 7,
dans laquelle le joint torique forme simultanément un joint d'étanchéité tridirectionnel comprenant :un premier joint d'étanchéité entre la partie allongée de la partie de paroi d'entrée et le dispositif de retenue de turbine ;un deuxième joint d'étanchéité entre une surface supérieure de la partie de jambe du boîtier de turbine et la surface de paroi intérieure (12a) du boîtier de pompe ; etun troisième joint d'étanchéité entre la surface de paroi intérieure (12a) du boîtier de pompe et le bord arrondi. - Pompe à fluide selon l'une quelconque des revendications 3 à 8,
dans laquelle le joint torique touche simultanément :le bord arrondi du dispositif de retenue de turbine ;une surface de la partie allongée de la partie de paroi d'entrée ;une surface supérieure de la partie de jambe du boîtier de turbine ; etune surface de paroi intérieure (12a) du boîtier de pompe.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201662378965P | 2016-08-24 | 2016-08-24 | |
US15/670,022 US20180058464A1 (en) | 2016-08-24 | 2017-08-07 | Pump Having Edge Mounted O-Ring Seal |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3287643A1 EP3287643A1 (fr) | 2018-02-28 |
EP3287643B1 true EP3287643B1 (fr) | 2019-12-11 |
Family
ID=59655986
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17186912.6A Active EP3287643B1 (fr) | 2016-08-24 | 2017-08-18 | Pompe pourvue d'un joint torique monté sur le bord |
Country Status (7)
Country | Link |
---|---|
US (1) | US20180058464A1 (fr) |
EP (1) | EP3287643B1 (fr) |
CN (1) | CN207583676U (fr) |
AU (1) | AU2017218958A1 (fr) |
BR (1) | BR102017017965A2 (fr) |
CA (1) | CA2976706A1 (fr) |
ES (1) | ES2773696T3 (fr) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130052051A1 (en) * | 2011-08-26 | 2013-02-28 | Dyson Technology Limited | Turbomachine |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2997958A (en) * | 1960-06-13 | 1961-08-29 | Heinicke Pump Co | Centrifugal pump |
JPH06229393A (ja) * | 1993-02-01 | 1994-08-16 | Ebara Corp | 全周流型インラインポンプ |
US5407323A (en) * | 1994-05-09 | 1995-04-18 | Sta-Rite Industries, Inc. | Fluid pump with integral filament-wound housing |
US6227802B1 (en) * | 1999-12-10 | 2001-05-08 | Osmonics, Inc. | Multistage centrifugal pump |
DE10200579B4 (de) * | 2002-01-09 | 2013-06-06 | Hilge Gmbh & Co. Kg | Selbstansaugende Kreiselpumpe |
IT1398811B1 (it) * | 2010-03-18 | 2013-03-18 | Calpeda A Spa | Pompa multistadio a tenuta perfezionata |
WO2015084957A1 (fr) * | 2013-12-03 | 2015-06-11 | Graco Minnesota Inc. | Pompe de prélèvement d'eaux souterraines |
EP3150885A4 (fr) * | 2014-05-29 | 2018-02-14 | Nok Corporation | Structure d'étanchéité et dispositif d'étanchéité |
-
2017
- 2017-08-07 US US15/670,022 patent/US20180058464A1/en not_active Abandoned
- 2017-08-17 CA CA2976706A patent/CA2976706A1/fr not_active Abandoned
- 2017-08-18 EP EP17186912.6A patent/EP3287643B1/fr active Active
- 2017-08-18 ES ES17186912T patent/ES2773696T3/es active Active
- 2017-08-22 BR BR102017017965-6A patent/BR102017017965A2/pt not_active IP Right Cessation
- 2017-08-22 AU AU2017218958A patent/AU2017218958A1/en not_active Abandoned
- 2017-08-23 CN CN201721059721.5U patent/CN207583676U/zh not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130052051A1 (en) * | 2011-08-26 | 2013-02-28 | Dyson Technology Limited | Turbomachine |
Also Published As
Publication number | Publication date |
---|---|
CN207583676U (zh) | 2018-07-06 |
US20180058464A1 (en) | 2018-03-01 |
EP3287643A1 (fr) | 2018-02-28 |
ES2773696T3 (es) | 2020-07-14 |
AU2017218958A1 (en) | 2018-03-15 |
CA2976706A1 (fr) | 2018-02-24 |
BR102017017965A2 (pt) | 2018-03-13 |
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