CN100366914C - Multistage pump, particularly of the immersion type - Google Patents
Multistage pump, particularly of the immersion type Download PDFInfo
- Publication number
- CN100366914C CN100366914C CNB038110121A CN03811012A CN100366914C CN 100366914 C CN100366914 C CN 100366914C CN B038110121 A CNB038110121 A CN B038110121A CN 03811012 A CN03811012 A CN 03811012A CN 100366914 C CN100366914 C CN 100366914C
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- China
- Prior art keywords
- pump
- overcoat
- main shaft
- different levels
- check valve
- Prior art date
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- Expired - Fee Related
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- 238000007654 immersion Methods 0.000 title abstract description 3
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 5
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 7
- 230000036316 preload Effects 0.000 claims description 4
- 238000009792 diffusion process Methods 0.000 abstract 1
- 230000003321 amplification Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Images
Classifications
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- 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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/06—Multi-stage pumps
- F04D1/063—Multi-stage pumps of the vertically split casing type
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- 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
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- 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
- F04D29/043—Shafts
- F04D29/044—Arrangements for joining or assembling shafts
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- 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
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- 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
- F04D29/4293—Details of fluid inlet or outlet
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
A multistage pump, particularly of the immersion type, comprises an outer tubular jacket (2) defining a longitudinal axis (L), a plurality of adjacent stages (3) which are arranged hydraulically in series and inserted slidably inside the tubular jacket (2), and a main shaft (4) which is coaxial with the longitudinal axis (L). Each stage has at least one impeller (5) coupled to the main shaft (4) and a diffusion duct (6), means for connecting an electric motor (24), an intake element (7) and a delivery element (8) mounted respectively upstream and downstream of the stages (3) so as to lock them axially. The intake element (7) and delivery element (8) are secured removably to the jacket (2) close to its longitudinal ends by means of substantially transverse connecting members (9) which may be accessed from the outside of the jacket (2). The delivery element (8) comprises a hollow tubular portion (14) which houses inside it a non-return valve (15) inserted slidably so that it may be extracted axially outwards.
Description
Technical field
The present invention is applied to electric submersible pump (immersion pump) field, particularly a kind of submerged type multistage pump.
Background technique
Submersible pump is mainly used in the upwards water intaking from darker relatively place, therefore, must have a high head (high head).This target realizes by the pump with a plurality of levels (stage) that are together in series.By prior art as can be known, such pump generally includes element, jacket tube that non-return (non-return) valve, connect groups of motors, overcoat inside by series connection hydraulically be provided with at different levels, at different levelsly be stacked together mutually.Each independently level comprise at least one impeller and a diffusing tube.These are stacked on the at different levels of mutual top and must be fixed on the coat, and this technical problem can realize by many diverse ways.
Wherein a kind of way that addresses this problem is open in the file of No. the 2687128th, U. S. Patent and B. P. GB211848 number.This way comprises: inner place forms internal thread at jacket tube, and screw thread is formed near vertically terminal position always.Also comprise the oblate or round-shaped screwed flange that has roughly, these flanges are assembled in the above-mentioned internal thread, will be linked together by the whole assemblies that constitute at different levels.
The major defect of said method comprises: make the expensive and required very little tolerance of size that screw thread caused.And the step of its assembly and disassembly is all very required great effort, even can become very difficult owing to the situation that occurs killing.
Second kind of solution that pump at different levels are affixed to together is open in the file of No. the 3487432nd, U. S. Patent and German patent 9407942U number.This way comprises: use a plurality of outer link, to apply compressive force, be positioned at correct position to guarantee every grade of assembly.Described outer link can be configured to guarantee simultaneously that motor support also is connected the mode on the main body with pump.
Yet this method also has a plurality of unescapable shortcomings.In fact, outer link has constituted added space, makes these pumps go wrong especially easily when inserting long and narrow space.And outer link is owing to have suitable length, so be easy to deform in the transportation of pump or assembly process.
European patent discloses a kind of multistage pump No. 0267445, and wherein, every grade of assembly is fixed on the position by bearing and centring element, and described centring element is interior side-prominent to jacket tube radially.These bearings and centring element combine with extrusion chamber when being arranged at outlet side, when being arranged at inlet side, combine with jam plate.
This method is beneficial to assembling at different levels and the outlet check valve, but but has a following shortcoming, that be exactly after the check valve dismounting, cause at different levels in axial moving freely.Therefore just must be again with location at different levels after the check valve dismounting.And the form of bearing and centring element is, the thrust that fluid applies on check valve is positioned at the upper end of described valve, is transferred at different levelsly to get on, thereby weakened their operating life.
WO-A-01/59303 discloses a kind of multistage pump, comprising: an outer tubular overcoat, this overcoat are determined a longitudinal axis; A plurality of adjoining levels, this level are slidably inserted in the described jacket tube; A main shaft, this axle is coaxial with the described longitudinal axis; Each grade has at least one impeller and diffusing tube of matching with described main shaft, is used for electric notor is connected to the device of described main shaft; Entry element and outlet element, they are respectively by the axial described a plurality of grades upstream and downstream that lock onto.But in this prior art, being contained in the check valve of outlet in the element can not axially extract out from the inner vanes of this element, unless transverse connection or screw unclamp from cylindrical body, so, just make the multistage axial position that moves axially and lose.
Summary of the invention
The target of a cardinal principle of the present invention just provides a kind of eliminated above-mentioned many shortcomings, wieldy, the multistage pump that also has advantage aspect manufacture cost.
It is a principal object of the present invention to provide a kind of multistage pump, this pump is easy to assembly and disassembly, and its primary clustering and the assembly that is easy to wear and tear can be changed quickly and easily.
Another target of the present invention provides a kind of multistage pump, and this pump is made of the assembly that can assemble very easily and change, and these assemblies have high mechanical properties.
Another special target of the present invention provides a kind of multistage pump, and this pump is reliably in the quite a long time, can keep optimum mechanical property.
Another target of the present invention provides a kind of multistage pump, and this pump partly has good performance and restriction loss, the especially loss of check valve at head.
The invention provides a kind of multistage pump, comprising: an outer tubular overcoat, this overcoat are determined a longitudinal axis; A plurality of adjoining levels, this level are slidably inserted in the described jacket tube; A main shaft, this axle is coaxial with the described longitudinal axis; Each grade has at least one impeller and diffusing tube of matching with described main shaft, is used for electric notor is connected to the device of described main shaft; Entry element and outlet element, they are axially lock onto described a plurality of grades upstream and downstream respectively, wherein said outlet element removably is fixed on the end of described overcoat near the longitudinal axis by substantial transverse link, wherein link can be from the outside dismounting of described overcoat, it is characterized in that, described entry element then removably is fixed on the other end of described overcoat near the longitudinal axis by substantial transverse link, link wherein can be approaching from the outside of described overcoat, described outlet element comprises and is used for tubular portion that check valve is covered, described tubular portion has an end limit, at different levelsly axially offset with described, guarantee the axial positions that are positioned at respect to described jacket tube at different levels, described tubular portion has circular groove and an inner ring seat, an elasticity locking ring is removably covered in the described interior ring seat, to keep described check valve to be pressed against on the described circular groove, the shape that the core of described tubular portion has allows to remove after the described elasticity locking ring ring seat in described, described check valve axially can be extracted, described transverse connection also is securely fixed on the described jacket tube simultaneously, thereby has prevented at different levels endwisely slipping described in the process of changing described check valve.
Because its specific structure, it is at different levels to make it possible to easily in jacket tube assembling, makes that also at different levels dismounting is very convenient in this pump and the pump.And, being positioned at the check valve of outlet side, can from its seat, extract easily.The dismounting of valve can be to any influence of generations at different levels that stacks in the jacket tube yet, the trams that still can be locked at separately at different levels.Described this special characteristic makes to be at different levels reorientating extract valve in jacket tube after, thereby has reduced the needed time of replacing valve.
And fluid is applied to the thrust on the check valve, and the water hammer effect of Xing Chenging for example is transferred on the outlet element, and be not applied directly at different levels on, thereby reduced the pressure that bear at different levels.
Preferably, entry element comprises an inlet flange with inlet opening, and this flange is dismountable to be cooperated with an annular inner surface.This annular inner surface can insert in the jacket tube and contact with afterbody among at different levels, and this annular inner surface also has and is used for fixing the described outer hole that puts.
This specific structure allows inlet flange detachable, only stays annular inside surface and is connected on the jacket tube.The direct advantage of this structure is exactly, and different motors can be installed on the same pump by shirtsleeve operation, and it is just passable with the coupling that is connected with axle only to need to change the inlet flange that motor is connected on the pump.
Description of drawings
By describe in detail below according to not exclusive preferred embodiment of the present invention, the reader can see more and clearly understand other characteristics of the present invention and advantage that this unrestricted example will illustrate in conjunction with the drawings:
Accompanying drawing 1 is along the partial cross section figure on a longitudinal axis plane, illustrates the assembly according to pump of the present invention;
Accompanying drawing 2 is the sectional view of the represented transverse section of II-II line in Fig. 1, illustrates according to pump of the present invention;
Accompanying drawing 3 illustrates the sectional view according to the part of pump of the present invention;
Accompanying drawing 4 is a sectional view, illustrates the details after the amplification of part shown in Figure 3;
Accompanying drawing 5 illustrates the cross sectional view according to the part of pump of the present invention;
Accompanying drawing 7 is a sectional view, illustrates according to the details after the amplification of pump of the present invention.
Embodiment
Describe according to multistage pump of the present invention below in conjunction with above mentioned accompanying drawing, the integral body of pump is with reference character 1 expression, and this pump can be used for particularly slipping into by mud, in the fluid that sand and other suspended matters are formed.
Pump 1 by the outer tubular overcoat 2 of having determined longitudinal axis L, the arranged in series of a plurality of hydraulic types, and slidably embeds the vicinity at different levels 3 in the outer tubular cover 2 and forms with the coaxial main shaft 4 of longitudinal axis L.
Each grade 3 is by the impeller 5 that is fixed on the main shaft 4, and the guiding fluid enters the inlet of next stage and changes diffusing tube 6 compositions of the velocity vector of fluid by easy mode.
Laterally connecting element 9 can be made up of toroidal confinement element 10, and this toroidal confinement element is accurately installed and embedded through hole 12 and entry element 7 and export on the element 8 in correspondingly the hole 13.These confinement elements 10 are fixing by locking nut 11.Easily, described hole 13 has equidistant inclination (angularly equidistant), and it can be distributed along the outside of entry element 7 with outlet element 8 uniformly.
Outlet element 8 comprises a tubular portion 14, has hole 13 on position only about half of on this part, and this part is fixed on the overcoat 2 by confinement element 10 and locking nut 11.Tubular portion 14 has the inboard of hollow, and its inboard can cover check valve 15.Check valve 15 slidably inserts the inside of tubular portion 14, also can be by axial extracting.
The inside of tubular portion 14 has circular groove 16, and this groove props up this valve when check valve 15 inserts fully.When check valve 15 was positioned at this position, elasticity locking ring 17 is inserted just can be tight with the block of valve on the internal annular seat 18 of tubular portions 14.
Sleeve 21 at its end longitudinally, contacts with the first order at different levels 3 between annular inner surface 20 and overcoat 2, at its other end longitudinally, contacts with inlet flange 19.
Level 3 correct axial position guarantees by radial constraint element 10 and annular inner surface 20, and has nothing to do with whether existing with the type of axial screws 25 and inlet flange 19.
If must dismantle radial constraint spare 10, must at first lay down 3 prestressing force that applied at different levels by loosening axial screws 25.Thereby inlet flange 19 just can be dismantled from annular inner surface 20 with the motor that is connected thereon, and does not need to dismantle described internal surface.Like this, even under the situation of inlet flange 19 dismountings or replacing, at different levels 3 among the insertion jacket tube 2 still keeps locking.Till that time, assemble suitable inlet flange 19 by axial screws 25 again, optimum prestressing force at different levels will recover automatically.
The device 24 that is used to connect electric notor comprises an attachment portion 26 on the inlet flange 19, this attachment portion has a plurality of axial bores 27, be used as the passage of connecting screw 28, described connecting screw can be fixed to the counter flange (counter flange) of motor and go up (not shown).
Easily, motor drive shaft is connected on the main shaft 4 by coupling 29.This coupling 29 is rigidly attached on the main shaft 4 by key 30, and this key is tight in conjunction with lock by one, and can carry out demolition and replacement, to allow to connect the motor drive shaft of different size.
Each grade at different levels 3 all comprises the wear ring 32 of impeller 5, the dismounting that this ring can be manual and need be by disconnector (extractor) or other specific instruments.
Every grade wear ring 32 is maintained at correct position by an annular seating 33 that matches with diffusing tube 6, and an elasticity preload piece 34 is between the level of described level and vicinity.This elasticity preload piece 34 has tapered distal end part 35 and the connecting end 36 with two kinds of difference in functionalitys.The connecting moves of tapering part 35 is installed in correct position with ring, and has made the shell of a wear ring 32 with above-mentioned annular seating 33.The shape that described attachment portion 36 has makes its fluid that can guide outflow flow to each diffusing tube 6 from impeller 5.
During operation, when needs were changed check valve 15, locking ring 17 was disassembled, then with valve shaft to extract; In the still axial insertion tubular portion 14 of new check valve 15, prop up circular groove 16 up to it; At last, again locking ring 17 is installed on the interior ring seat 18 that matches with it on the tubular portion.
When needs dismountings motor, can twist connecting screw 28 and 26 dismantle motor from the attachment portion then.
Yet, on identical pump 1, use when having the motor of different counter flanges if desired, so just need cancel axial screws 25, remove inlet flange 19 from annular inner surface 20 then, and choose at random a coupling 29.Afterwards, one of assembling is suitable for having the inlet flange with attachment portion 26 19 of motor of the counter flange of new size.Like this, can make to have different radial dimensions, as 6 ", 8 ", 10 ", underwater motor cooperate with same pump 1.
When prolonging pump 1 after the operation among the high concentration abrasive material (sand or mud), wear ring 32 must frequent replacing.For this purpose, necessary Panasonic axial screws 25 is removed the locking nut 11 in the hole 12 on radial tightening spare 10 and the process overcoat 2, dismantles tubular portion 14 then.After this operation, can from overcoat, extract pile up at different levels, manually change wear ring 32, and need be by any equipment.
By mentioned above, can clearly understand, reached predetermined target according to said pump of the present invention, the check valve, inlet flange, the wear ring that especially are applied in the pump of the present invention are changed declining to a great extent of frequency.In actual applications, the dismounting of valve and inlet flange can be to not being stacked on any influence of generations at different levels in the jacket tube, its trams that still remain at different levels.
And the present invention also has following advantage, and that is exactly that the motor with different size can be installed on the identical pump by a shirtsleeve operation after dismounting and changing inlet flange and coupling, and described coupling connects motor and pump.
It is exactly further protection to inner stages that the present invention also has an extra advantage.In actual applications, the mechanical stress of the short time that water hammer applied is transferred on the outlet element from check valve, has eliminated any influence to inner stages.This design has guaranteed the operating life of pump.
Another advantage of the present invention is that the carrying cost of pump significantly reduces.In actual applications, the wear ring of replacing damage that can be manual, and needn't use special instrument.And the work of dismantling work at different levels and replacing wear ring becomes very easy, makes to have advantage according to pump of the present invention aspect the cost.Like this, the problem with regard to having avoided needing to change whole support and locking the whole assembly of wear ring.
Can also carry out many changes and distortion according to pump of the present invention, all these change within the expressed invention thought of the claims all belong to following.All details can be replaced with different material as required by other element that is equal to technically, and do not depart from scope of the present invention.
Though, above with reference to accompanying drawing to pump through having gone detailed description, the reference character that uses in specification and claims all just is used for being convenient to the present invention is understood, and protection scope of the present invention is not constituted any restriction.
The application is the preference of the patent application of VI2002A000094 based on May 15th, 2002 in the number of patent application of Italian application, and the content of this application is incorporated herein by reference at this.
Claims (14)
1. a multistage pump (1), comprising: an outer tubular overcoat (2), this overcoat are determined a longitudinal axis (L); A plurality of adjoining levels (3), this level are slidably inserted in the described jacket tube (2); A main shaft (4), this axle is coaxial with the described longitudinal axis (L); Each level has at least one impeller (5) that matches with described main shaft (4) and diffusing tube (6), is used for electric notor is connected to the device (24) of described main shaft (4); Entry element (7) and outlet element (8), they are axially lock onto the upstream and downstream of described a plurality of levels (3) respectively, wherein said outlet element (8) removably is fixed on the end of described overcoat (2) near the longitudinal axis by substantial transverse link (9), wherein link (9) can be from the outside dismounting of described overcoat (2), it is characterized in that, described entry element (7) then removably is fixed on the other end of described overcoat (2) near the longitudinal axis by substantial transverse link (9), link wherein (9) can be approaching from the outside of described overcoat (2), described outlet element (8) comprises and is used for tubular portion (14) that check valve (15) is covered, described tubular portion (14) has an end limit, axially offset with described (3) at different levels, guarantee the axial positions that are positioned at respect to described jacket tube (2) at different levels, described tubular portion (14) has a circular groove (16) and an inner ring seat (18), an elasticity locking ring (17) is removably covered in the described interior ring seat (18), to keep described check valve (15) to be pressed against on the described circular groove (16), the shape that the core of described tubular portion (14) has allows to remove described elasticity locking ring (17) afterwards ring seat in described (18), described check valve (15) axially can be extracted, described transverse connection (9) also is securely fixed on the described jacket tube (2) simultaneously, thereby has prevented endwisely slipping in (3) at different levels described in the process of changing described check valve (15).
2. pump as claimed in claim 1, it is characterized in that: described transverse connection (9) comprises radial constraint spare (10), this radial constraint spare (10) accurately inserts in the perforation (12) and on described entry element (7) and the described outlet element (8) in the corresponding hole (13) ordinatedly, and is fixed in its position by locking nut (11) separately.
3. pump as claimed in claim 2 is characterized in that: the described hole (13) on described entry element (7) and the described outlet element (8) roughly equidistantly is obliquely installed.
4. pump as claimed in claim 3, it is characterized in that: described entry element (7) comprises the inlet flange (19) with inlet (23), an annular inner surface (20) that contacts and cooperate with the afterbody of described a plurality of levels (3), and sleeve (21) with described inlet flange (19).
5. pump as claimed in claim 4 is characterized in that: described annular inner surface (20) can insert in the described jacket tube (2), and described internal surface has and is used for the described hole (13) that accurately cooperates with described radial constraint spare (10).
6. pump as claimed in claim 4, it is characterized in that: by one group of axial bolt (25), described inlet flange (19) removably can be fixed in described annular inner surface (20), screw can be approaching from the outside, make when described annular inner surface (20) keeps the axial locking in assembling and described multistage (3), it can be taken off.
7. pump as claimed in claim 4, it is characterized in that: sleeve (21) is arranged between described annular inside surface (20) and the described overcoat (2), and contact with first level among described a plurality of levels (3) at an end longitudinally, contact with described inlet flange (19) at the other end.
8. pump as claimed in claim 7 is characterized in that: the side surface of described sleeve (21) has opening (22), is used for described attaching means (10) and passes through, even when described attaching means (10) inserts, described opening also can allow described sleeve longitudinally to move.
9. pump as claimed in claim 1, it is characterized in that: the described device (24) that is used to connect electric notor comprises the attachment portion (26) on the described inlet flange (19), it has a plurality of axial bores (27) that connecting screw (28) is passed through that are used for, and this screw can be fixed on the counter flange of motor.
10. pump as claimed in claim 1 is characterized in that: the described device (24) that is used to connect electric notor comprises coupling (29), and this coupling is connected on the described main shaft (4) rigidly and removably.
11. pump as claimed in claim 10, it is characterized in that: described coupling (29) is connected on the main shaft (4) by key (30), described key when use has the motor drive shaft of different size, can carry out demolition and replacement like this by keeping locking in conjunction with pin (31).
12. pump as claimed in claim 1 is characterized in that: each level all comprises the wear ring (32) of a described impeller (5) in described multistage (3), this ring can be not by the help of disconnector or other special tool(s) and manual the dismounting.
13. pump as claimed in claim 12, it is characterized in that: described wear ring (32) at different levels is held in correct position by the annular seating (33) that matches with described diffusing tube (6), and a flexible preload piece (34) is between described level and adjacent level thereof.
14. pump as claimed in claim 13, it is characterized in that: described elasticity preload piece (34) has tapered distal end part (35), this part axially defines the outer cover of wear ring (32) with annular seating (33), also comprise one second connecting end part (36), this end portion has shape easily, makes it fluid of output can be directed to each diffusing tube (6) from impeller (5).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2002VI000095A ITVI20020095A1 (en) | 2002-05-15 | 2002-05-15 | MULTI-STAGE PUMP PARTICULARLY OF IMMERSION TYPE |
| ITVI2002A000095 | 2002-05-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1653269A CN1653269A (en) | 2005-08-10 |
| CN100366914C true CN100366914C (en) | 2008-02-06 |
Family
ID=29434451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB038110121A Expired - Fee Related CN100366914C (en) | 2002-05-15 | 2003-05-14 | Multistage pump, particularly of the immersion type |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1509700B1 (en) |
| CN (1) | CN100366914C (en) |
| AT (1) | ATE506541T1 (en) |
| AU (1) | AU2003232947A1 (en) |
| DE (1) | DE60336810D1 (en) |
| IT (1) | ITVI20020095A1 (en) |
| WO (1) | WO2003098049A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2318969B1 (en) * | 2006-06-16 | 2010-02-10 | Bogemar, S.L. | ANCHORING SYSTEM OF AN OUTDOOR ENVELOPE OF A CENTRIFUGE PUMP BODY. |
| IT1398808B1 (en) * | 2010-03-17 | 2013-03-18 | Calpeda A Spa | MOTOR GROUP PERFECTED FOR PUMPING DEVICES |
| JP2012118382A (en) * | 2010-12-02 | 2012-06-21 | Panasonic Liquid Crystal Display Co Ltd | Liquid crystal display device |
| JP6624962B2 (en) * | 2016-02-10 | 2019-12-25 | 株式会社荏原製作所 | Suction casing for multi-stage submersible pump and multi-stage submersible pump |
| CN110671333B (en) * | 2019-09-29 | 2021-08-20 | 华中科技大学 | Multistage pump for lifting coarse particles in deep sea mining |
| CN111963452B (en) * | 2020-08-27 | 2021-10-26 | 浙江东音科技有限公司 | Prevent well immersible pump that silt blockked up |
| WO2022176092A1 (en) * | 2021-02-18 | 2022-08-25 | 三菱重工業株式会社 | Crude oil mining pump |
| CN114922810B (en) * | 2022-04-22 | 2024-03-22 | 浙江理工大学 | Modularized shaftless pump and quick replacement and operation and maintenance method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3487432A (en) * | 1967-03-09 | 1969-12-30 | Grundfos As | Coupling element for connection between a centrifugal pump and its drive motor |
| JPS5870091A (en) * | 1981-10-23 | 1983-04-26 | Shindo Pump Kk | Apparatus for clamping casing of slender submergible pump |
| EP0267445A2 (en) * | 1986-11-11 | 1988-05-18 | GRUPPO INDUSTRIALE ERCOLE MARELLI S.p.A. | Multistage pump for submersible electric pumps |
| CN2184107Y (en) * | 1993-08-11 | 1994-11-30 | 博山水泵厂 | Upright multilevel pump |
| CN2229983Y (en) * | 1995-06-05 | 1996-06-26 | 海城市三鱼水泵厂 | Guiding vane and volute casing combination type multi-stage miniature pump |
| WO2001059303A2 (en) * | 2000-02-11 | 2001-08-16 | Vertical S.R.L. | Centrifugal pump |
-
2002
- 2002-05-15 IT IT2002VI000095A patent/ITVI20020095A1/en unknown
-
2003
- 2003-05-14 DE DE60336810T patent/DE60336810D1/en not_active Expired - Lifetime
- 2003-05-14 AT AT03727746T patent/ATE506541T1/en not_active IP Right Cessation
- 2003-05-14 CN CNB038110121A patent/CN100366914C/en not_active Expired - Fee Related
- 2003-05-14 WO PCT/IB2003/001872 patent/WO2003098049A1/en not_active Application Discontinuation
- 2003-05-14 AU AU2003232947A patent/AU2003232947A1/en not_active Abandoned
- 2003-05-14 EP EP03727746A patent/EP1509700B1/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3487432A (en) * | 1967-03-09 | 1969-12-30 | Grundfos As | Coupling element for connection between a centrifugal pump and its drive motor |
| JPS5870091A (en) * | 1981-10-23 | 1983-04-26 | Shindo Pump Kk | Apparatus for clamping casing of slender submergible pump |
| EP0267445A2 (en) * | 1986-11-11 | 1988-05-18 | GRUPPO INDUSTRIALE ERCOLE MARELLI S.p.A. | Multistage pump for submersible electric pumps |
| CN2184107Y (en) * | 1993-08-11 | 1994-11-30 | 博山水泵厂 | Upright multilevel pump |
| CN2229983Y (en) * | 1995-06-05 | 1996-06-26 | 海城市三鱼水泵厂 | Guiding vane and volute casing combination type multi-stage miniature pump |
| WO2001059303A2 (en) * | 2000-02-11 | 2001-08-16 | Vertical S.R.L. | Centrifugal pump |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1509700B1 (en) | 2011-04-20 |
| EP1509700A1 (en) | 2005-03-02 |
| ATE506541T1 (en) | 2011-05-15 |
| DE60336810D1 (en) | 2011-06-01 |
| CN1653269A (en) | 2005-08-10 |
| WO2003098049A1 (en) | 2003-11-27 |
| AU2003232947A1 (en) | 2003-12-02 |
| ITVI20020095A1 (en) | 2003-11-17 |
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