CA1106697A - Submersible pump arrangement - Google Patents
Submersible pump arrangementInfo
- Publication number
- CA1106697A CA1106697A CA306,453A CA306453A CA1106697A CA 1106697 A CA1106697 A CA 1106697A CA 306453 A CA306453 A CA 306453A CA 1106697 A CA1106697 A CA 1106697A
- Authority
- CA
- Canada
- Prior art keywords
- pump
- chamber
- inlet
- unit
- pump unit
- 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.)
- Expired
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
- 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
- F04D13/086—Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
H. Fries-16 (Revision) SUBMERSIBLE PUMP ARRANGEMENT
ABSTRACT OF THE DISCLOSURE
A submersible pump arrangement including a verti-cally disposed pipe having an inlet at its lower end and an outlet at its upper end with a submersible pump unit being releasably connected to the inlet at the lower end only by help of gravity except during pump operation when the hydrostatic pressure difference created by the pump persists in the connection.
ABSTRACT OF THE DISCLOSURE
A submersible pump arrangement including a verti-cally disposed pipe having an inlet at its lower end and an outlet at its upper end with a submersible pump unit being releasably connected to the inlet at the lower end only by help of gravity except during pump operation when the hydrostatic pressure difference created by the pump persists in the connection.
Description
2--IJ B~ ER S I BLE PUMP A RRiZ\ MGEMENT
BACKGRo~D OF TH~ INVE~TION
~ Field of'the Invention _ This invention concerns a method and a device for pumpin~ li.quid b~ help of suDmersible pumps. The system d S should prim~rily ~e used for pumping relatively large ¦ amounts of water~ such as waste water, w`nere the pumping head is comparatively low.
Desc__ption of'the' Invention _ _ _ In pump units which'are meant to work entirely or ~ar~ly immersed in liquid there is a great inconvenience in maintenance work if the pump units are permanently installed. In order to solve these pro~lems it is known practice ~o arrange for the pump units to be lowered into -the pumped medium guided along guides and, in their lowered position bearing agains-t a rigidly ar-ranged outlet unit for the pump~d liquid. The connec-tion of the pump unit must in this position close tightly against the outlet pipe without ~eeding ~o be attached to it by screws or the like.
~0 These known devices admittedly anable the pump , unit to ~e easily raised out of the pumped medium ~or maintenaIIce wo.rk, but certain problems may occur as difficulties to get the connection of the pump unit ~o clo5e tightly against the outlet pipe during pump opera-25` tion when a force occurs which endeavors ~o part the two coupling devices~
This pr~blem has up to now been solved by forming I the coupling units so that the gravity of the pump unit comp~nsates and overcomes the force mentione~ An e~-ample of such a locking device is shown in the US Patent
BACKGRo~D OF TH~ INVE~TION
~ Field of'the Invention _ This invention concerns a method and a device for pumpin~ li.quid b~ help of suDmersible pumps. The system d S should prim~rily ~e used for pumping relatively large ¦ amounts of water~ such as waste water, w`nere the pumping head is comparatively low.
Desc__ption of'the' Invention _ _ _ In pump units which'are meant to work entirely or ~ar~ly immersed in liquid there is a great inconvenience in maintenance work if the pump units are permanently installed. In order to solve these pro~lems it is known practice ~o arrange for the pump units to be lowered into -the pumped medium guided along guides and, in their lowered position bearing agains-t a rigidly ar-ranged outlet unit for the pump~d liquid. The connec-tion of the pump unit must in this position close tightly against the outlet pipe without ~eeding ~o be attached to it by screws or the like.
~0 These known devices admittedly anable the pump , unit to ~e easily raised out of the pumped medium ~or maintenaIIce wo.rk, but certain problems may occur as difficulties to get the connection of the pump unit ~o clo5e tightly against the outlet pipe during pump opera-25` tion when a force occurs which endeavors ~o part the two coupling devices~
This pr~blem has up to now been solved by forming I the coupling units so that the gravity of the pump unit comp~nsates and overcomes the force mentione~ An e~-ample of such a locking device is shown in the US Patent
3,01~,9~5.
With the ac ual development towards lighter pump I units, the gravity sometimes is not sufficient to keep ¦ the pump unit do~n. This is especially the ~act by hy-! 35 draulic motor driven pumps~ where the motor unit built ,' togethar with the pump is very light.
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A way to entirely eliminate the problems mentioned is to, by help of gravity, connect the pump unit by its inlet. This means a lot of advantages as well for the construction of the pumping station as for that of the pump unit.
The United States patent 3,369,715 shows an example of such a solution.
The structure according to this patent has however certain disadvan-tages. The connection between the pump unit and the non-movable part of the installation thus takes place along a conical surface having a very small cone angle which means that the contact surface is almost vertical. The disadvan-tage is then that the pump unit will be very easily turnable with regard to the non-movable part. This is especially the fact when the pump starts.
The pump unit according to the patent mentioned is also provided wi~h very long and narrow vanes which give a totally axial flow with relatively big -linking losses and which also add the risk of turning of the pump unit.
SUMMARY OF THE INVE~TIO~
The invention provides apparatus for pumping liquids using a sub-mersible pump unit, comprising: a chamber into which a liquid is to be pumped, said chamber ha~ing an inletg a pump unit releasably positioned at the inlet of said chamber, whereby the pump is held securely in position by the help of hydro-static pressure experienced during pump operation and whereby said hydrostatic pressure contributes substantially to the fluid sealing engagement of the pump with the inlet of said chamber.
The disadvantages mentioned are eliminated by making the vane unit of the pump cup-formed With a wide radial extension having a lower edge which formsan angle of 90 -45 with the axial plane of the pump unit (preferably 80 -60 ) and by vanes arranged at said lower edge which have a height-width relation not exceeding 3:2 thus obtaining a radial to diagonal flow.
The invention is described more closely below with reference to the enclosed drawings.
' ~3-- .
~ ', \ ~
RIEF DESCRIPTION OF THE DRAWINGS
Figure 1 shows a detail of the inlet part of a purop unit.
Figure 2 shows a preferred embodiment of a pumping station according ; to the invention.
Figures 3-5 show further embodiments for different applications.
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' ' ` :
.
, .
. ,, DESCR~PTION OF TIIE IN E:N'f'ION
i~1 In the Fi~ stands for a submersible pump unit ', with a driving unit 2, vane unit 3 with vanes 14.
With the ac ual development towards lighter pump I units, the gravity sometimes is not sufficient to keep ¦ the pump unit do~n. This is especially the ~act by hy-! 35 draulic motor driven pumps~ where the motor unit built ,' togethar with the pump is very light.
'' ' ' ~
I
.
- , :
:. - . :
., :
, ' ~ , .. .
.
, ;$~
A way to entirely eliminate the problems mentioned is to, by help of gravity, connect the pump unit by its inlet. This means a lot of advantages as well for the construction of the pumping station as for that of the pump unit.
The United States patent 3,369,715 shows an example of such a solution.
The structure according to this patent has however certain disadvan-tages. The connection between the pump unit and the non-movable part of the installation thus takes place along a conical surface having a very small cone angle which means that the contact surface is almost vertical. The disadvan-tage is then that the pump unit will be very easily turnable with regard to the non-movable part. This is especially the fact when the pump starts.
The pump unit according to the patent mentioned is also provided wi~h very long and narrow vanes which give a totally axial flow with relatively big -linking losses and which also add the risk of turning of the pump unit.
SUMMARY OF THE INVE~TIO~
The invention provides apparatus for pumping liquids using a sub-mersible pump unit, comprising: a chamber into which a liquid is to be pumped, said chamber ha~ing an inletg a pump unit releasably positioned at the inlet of said chamber, whereby the pump is held securely in position by the help of hydro-static pressure experienced during pump operation and whereby said hydrostatic pressure contributes substantially to the fluid sealing engagement of the pump with the inlet of said chamber.
The disadvantages mentioned are eliminated by making the vane unit of the pump cup-formed With a wide radial extension having a lower edge which formsan angle of 90 -45 with the axial plane of the pump unit (preferably 80 -60 ) and by vanes arranged at said lower edge which have a height-width relation not exceeding 3:2 thus obtaining a radial to diagonal flow.
The invention is described more closely below with reference to the enclosed drawings.
' ~3-- .
~ ', \ ~
RIEF DESCRIPTION OF THE DRAWINGS
Figure 1 shows a detail of the inlet part of a purop unit.
Figure 2 shows a preferred embodiment of a pumping station according ; to the invention.
Figures 3-5 show further embodiments for different applications.
,, ~ `
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,, , . " , ~ :
' ' ` :
.
, .
. ,, DESCR~PTION OF TIIE IN E:N'f'ION
i~1 In the Fi~ stands for a submersible pump unit ', with a driving unit 2, vane unit 3 with vanes 14.
4 stands for the pump inlet, 5 ~n impeller, 6 a verti-cal pipe wi~h inlet 7 and outlet 8 in connection with one li~ui-l amoun-t each with levels 9 and 10 respec~ively.
and 12 stand for non~return valv~s and ]3 for guides for the pump unit.
According to the preferred embodiment, Fig. 2, a vertical pi~ 5 is arran~ed between two liquid tan'~s with levels 9 and 10 respectivel~. Guides 13 are arranged in the pipe 6 along which the pump unit 1 may be l~wered against the inlet 7. The vane unit 3 is then adapted to suit to the inlet 7 so that the pump unit will stand rigigly in its lowered position only by help of gravity.
The vane unit 3 is on its upper part open around its whole periphery~ In operation the liquid will flow up-wards in the pipe 6 and reach the outlet 8 into the upper liquid tank. The pipe 6 will thus serve as an outlet pipe as well as a pumping station. This means r beyond pipe material savings, also that the pumping station may Il. be given a much less diameter than what is normally the case. This me~ns in its turn decreasin~ material and huilding costs.
In operation the pump unit will, except by the gravity, also be influenced by the hydrost~tic pressu.e the pump itself creates. This means a very ~ood connec-tion of the pump inlet to the pipe inlet 7~ which connec-tion grows more ri~id by increasing pumpin~ pressure. By conventionally attached pumps, on the contrary, the con-nection grows weaker by increasing pumping pressure.
By designing the van~ unit relatively shallow, the risks ~or the pump loosening from the non-movable part of the installation decrease. The relatively lonq di~meter also brings about tha~ the vanes 14 may be de- -signed for a radial to a dia~onal 10w thus diminishing the flow los~es~
.' ,.
- , ,~ -5-The liqllid flows around ~,he mo-tor unit 2 on its ~ay to the ou-tlet 8. This means that by operation, t~e I mo-tor uni-t is always su~rounded by li~uid ar.d so any ¦ special coolin~ of the motor is avoided. A non-return .~
valve ~,2 at the pump outlet may be used for preventing , liquicl from flowing backwards when the pump is out of operatiorl. ~lternatively a non-return valve is arranged in fror.i o~ the inlet 7.
I~ is no~ necessary to connect the pump unit to a horizontal inlet opening as is described above. In Fig. 3 is shown ho~ the pump unit by gravity is attached to a ve,rtical inlet opening. When the pump is started it is automatically sucked to the opening and a firm connectio~
~' is obtained.
A further embodiment is shown in Fig. 4~ The pump ~", unit i.5 here hung directly on a pipe opening in the liquid ,~
tank to ~hich liquid should be pumped. The pumping station may thus be omikted and the only other necessary ,~ equipment is some sort of a non-return valve 11 prevent-ing the liquid from flowing backwards after the pump has stopped ~
,~ The purnp described above is not limited to be used in so-called lift-pumping stations as describea above and ' in other construc~ions with low static heads. The pumping station may also be sealed against an inner over pressure ~, as is sl~own in Fig~ 5. In this station the cover is ,~ mounted after the pump having been lowered, The pumping statiQn is now so sealed that a pumping pressure may be btained ~hich by far goes beyond what is possible by con-~entionally connec~ed pump units.
According to the inven~ion a solution of the prohlem to attach a submersible pump in a simple and secure way has thus been ob~ained and at the same time the necessary number of details in a pumping station and the necessary volume of the station ha~e been considerably reduced.
.
.
.
. . '.
' : ' ' ' .
- ' ' :
and 12 stand for non~return valv~s and ]3 for guides for the pump unit.
According to the preferred embodiment, Fig. 2, a vertical pi~ 5 is arran~ed between two liquid tan'~s with levels 9 and 10 respectivel~. Guides 13 are arranged in the pipe 6 along which the pump unit 1 may be l~wered against the inlet 7. The vane unit 3 is then adapted to suit to the inlet 7 so that the pump unit will stand rigigly in its lowered position only by help of gravity.
The vane unit 3 is on its upper part open around its whole periphery~ In operation the liquid will flow up-wards in the pipe 6 and reach the outlet 8 into the upper liquid tank. The pipe 6 will thus serve as an outlet pipe as well as a pumping station. This means r beyond pipe material savings, also that the pumping station may Il. be given a much less diameter than what is normally the case. This me~ns in its turn decreasin~ material and huilding costs.
In operation the pump unit will, except by the gravity, also be influenced by the hydrost~tic pressu.e the pump itself creates. This means a very ~ood connec-tion of the pump inlet to the pipe inlet 7~ which connec-tion grows more ri~id by increasing pumpin~ pressure. By conventionally attached pumps, on the contrary, the con-nection grows weaker by increasing pumping pressure.
By designing the van~ unit relatively shallow, the risks ~or the pump loosening from the non-movable part of the installation decrease. The relatively lonq di~meter also brings about tha~ the vanes 14 may be de- -signed for a radial to a dia~onal 10w thus diminishing the flow los~es~
.' ,.
- , ,~ -5-The liqllid flows around ~,he mo-tor unit 2 on its ~ay to the ou-tlet 8. This means that by operation, t~e I mo-tor uni-t is always su~rounded by li~uid ar.d so any ¦ special coolin~ of the motor is avoided. A non-return .~
valve ~,2 at the pump outlet may be used for preventing , liquicl from flowing backwards when the pump is out of operatiorl. ~lternatively a non-return valve is arranged in fror.i o~ the inlet 7.
I~ is no~ necessary to connect the pump unit to a horizontal inlet opening as is described above. In Fig. 3 is shown ho~ the pump unit by gravity is attached to a ve,rtical inlet opening. When the pump is started it is automatically sucked to the opening and a firm connectio~
~' is obtained.
A further embodiment is shown in Fig. 4~ The pump ~", unit i.5 here hung directly on a pipe opening in the liquid ,~
tank to ~hich liquid should be pumped. The pumping station may thus be omikted and the only other necessary ,~ equipment is some sort of a non-return valve 11 prevent-ing the liquid from flowing backwards after the pump has stopped ~
,~ The purnp described above is not limited to be used in so-called lift-pumping stations as describea above and ' in other construc~ions with low static heads. The pumping station may also be sealed against an inner over pressure ~, as is sl~own in Fig~ 5. In this station the cover is ,~ mounted after the pump having been lowered, The pumping statiQn is now so sealed that a pumping pressure may be btained ~hich by far goes beyond what is possible by con-~entionally connec~ed pump units.
According to the inven~ion a solution of the prohlem to attach a submersible pump in a simple and secure way has thus been ob~ained and at the same time the necessary number of details in a pumping station and the necessary volume of the station ha~e been considerably reduced.
.
.
.
. . '.
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Claims (9)
1. Apparatus for pumping liquids using a submersible pump unit, comprising:
a chamber into which a liquid is to be pumped, said chamber having an inlet, a pump unit releasably positioned at the inlet of said chamber, whereby the pump is held securely in position by the help of hydro-static pressure experienced during pump operation and whereby said hydrostatic pressure contributes sub-stantially to the fluid sealing engagement of the pump with the inlet of said chamber.
a chamber into which a liquid is to be pumped, said chamber having an inlet, a pump unit releasably positioned at the inlet of said chamber, whereby the pump is held securely in position by the help of hydro-static pressure experienced during pump operation and whereby said hydrostatic pressure contributes sub-stantially to the fluid sealing engagement of the pump with the inlet of said chamber.
2. The apparatus of claim 1 wherein the inlet of said chamber prevents the reverse flow of fluid during such time as said pump is not in operation.
3. The apparatus of claim 1 wherein the chamber comprises a pipe.
4. The apparatus of claim 1 wherein the inlet of said chamber opens in a substantially horizontal direction.
5. The apparatus of claim 1 wherein the pump unit comprises a driving unit and a vane unit with an impeller.
6. The apparatus of claim 5 wherein said vane unit has a wide radial extension that is cup shaped having a lower edge which forms an angle of 90°-45° with the axial plane of the pump unit and wherein vanes are arranged at said lower edge which have a height-width relation not exceeding 3:2 thus obtaining a radial to diagonal flow.
7. The apparatus of claim 6 wherein said vane unit is open along its whole periphery.
8. The apparatus of claim 7 wherein said chamber comprises a pipe.
9. The apparatus of claim 8 wherein said chamber further comprises means to prevent the reverse flow of fluid during such time as said pump is not in operation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7707568A SE423565B (en) | 1977-06-30 | 1977-06-30 | DEVICE FOR RECEIVING LIQUID |
| SE7707568-7 | 1977-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1106697A true CA1106697A (en) | 1981-08-11 |
Family
ID=20331731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA306,453A Expired CA1106697A (en) | 1977-06-30 | 1978-06-29 | Submersible pump arrangement |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS5414003A (en) |
| AR (1) | AR213696A1 (en) |
| AU (1) | AU3741578A (en) |
| BR (1) | BR7804378A (en) |
| CA (1) | CA1106697A (en) |
| ES (1) | ES471236A1 (en) |
| FR (1) | FR2396189A1 (en) |
| GB (1) | GB2000552B (en) |
| SE (1) | SE423565B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5788300A (en) * | 1980-11-25 | 1982-06-02 | Tsurumi Seisakusho:Kk | Pump |
| JPH0638755Y2 (en) * | 1985-08-08 | 1994-10-12 | 克己 知里 | Heavy equipment carrier |
| JPS63186999U (en) * | 1988-04-30 | 1988-11-30 | ||
| GB8824813D0 (en) * | 1988-10-22 | 1988-11-30 | J W Swain Plastics Ltd | Improvements in/relating to pumping arrangements |
| JPH0316837A (en) * | 1989-06-14 | 1991-01-24 | Tsutomu Takeyauchi | Trailer |
| US5154588A (en) * | 1990-10-18 | 1992-10-13 | Oryz Energy Company | System for pumping fluids from horizontal wells |
| US5271725A (en) * | 1990-10-18 | 1993-12-21 | Oryx Energy Company | System for pumping fluids from horizontal wells |
| NO306312B1 (en) * | 1996-02-09 | 1999-10-18 | Kvaerner Ships Equipment As | Centrifugal pump device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL44500C (en) * | ||||
| FR597729A (en) * | 1924-06-02 | 1925-11-27 | Escher Wyss & Cie Const Mec | Motor-pump unit for wells, jacking holes, etc. |
| GB787027A (en) * | 1954-08-16 | 1957-11-27 | Niels Matheson | Improvements in or relating to bore hole pump installations |
| GB1440565A (en) * | 1972-09-26 | 1976-06-23 | Claessen Co Ltd | Subermsible pump installations |
-
1977
- 1977-06-30 SE SE7707568A patent/SE423565B/en not_active IP Right Cessation
-
1978
- 1978-06-13 GB GB7826787A patent/GB2000552B/en not_active Expired
- 1978-06-23 AU AU37415/78A patent/AU3741578A/en active Pending
- 1978-06-27 FR FR7819139A patent/FR2396189A1/en active Granted
- 1978-06-28 ES ES471236A patent/ES471236A1/en not_active Expired
- 1978-06-29 CA CA306,453A patent/CA1106697A/en not_active Expired
- 1978-06-30 BR BR7804378A patent/BR7804378A/en unknown
- 1978-06-30 AR AR27279578A patent/AR213696A1/en active
- 1978-06-30 JP JP7877478A patent/JPS5414003A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR2396189A1 (en) | 1979-01-26 |
| SE7707568L (en) | 1978-12-31 |
| FR2396189B1 (en) | 1984-05-25 |
| GB2000552A (en) | 1979-01-10 |
| AU3741578A (en) | 1980-01-03 |
| BR7804378A (en) | 1979-01-16 |
| GB2000552B (en) | 1982-05-12 |
| ES471236A1 (en) | 1979-01-16 |
| SE423565B (en) | 1982-05-10 |
| AR213696A1 (en) | 1979-02-28 |
| JPS5414003A (en) | 1979-02-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |