EP0454529A1 - Anordnung von vertikal orientierten Kreiselpumpen - Google Patents

Anordnung von vertikal orientierten Kreiselpumpen Download PDF

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Publication number
EP0454529A1
EP0454529A1 EP91400981A EP91400981A EP0454529A1 EP 0454529 A1 EP0454529 A1 EP 0454529A1 EP 91400981 A EP91400981 A EP 91400981A EP 91400981 A EP91400981 A EP 91400981A EP 0454529 A1 EP0454529 A1 EP 0454529A1
Authority
EP
European Patent Office
Prior art keywords
pump
suction
bore
flange
central
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.)
Granted
Application number
EP91400981A
Other languages
English (en)
French (fr)
Other versions
EP0454529B1 (de
Inventor
Jean-Claude Peu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wilo Salmson France SAS
Original Assignee
Pompes Salmson SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pompes Salmson SAS filed Critical Pompes Salmson SAS
Publication of EP0454529A1 publication Critical patent/EP0454529A1/de
Application granted granted Critical
Publication of EP0454529B1 publication Critical patent/EP0454529B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0077—Safety measures
    • F04D15/0083—Protection against sudden pressure change, e.g. check valves
    • 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
    • F04D1/066—Multi-stage pumps of the vertically split casing type the casing consisting of a plurality of annuli bolted together
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/029—Stopping of pumps, or operating valves, on occurrence of unwanted conditions for pumps operating in parallel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7879—Resilient material valve
    • Y10T137/7888—With valve member flexing about securement
    • Y10T137/789—Central mount
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85978—With pump
    • Y10T137/86131—Plural
    • Y10T137/86163—Parallel

Definitions

  • the present invention relates to a vertical centrifugal pump assembly, in particular a multicellular centrifugal pump, consisting of at least one removable cartridge of a centrifugal hydraulic assembly forming a block clamped between two flange flanges and mounted on a vertical axis, fixed by its flange flange, and engaged by a flange sleeve in a bore receiving a pump body where the cartridge is connected, respectively, at the center of the bore, to a central suction connection of the pump and, to the edge of the bore, at a discharge outlet of the pump.
  • the present invention aims in particular to allow the isolation of the hydraulic assembly cartridge using a simple check valve which does not change the design and economy of the pump assembly. These arrangements prove to be particularly advantageous in the case of multiple pumps mounted on a single pump housing.
  • a flat annular non-return valve and opening in the direction of delivery of the pump is disposed at the bottom of the receiving bore between the inner wall of said bore and the outer wall of the connector. central vacuum.
  • the non-return valve is held in axial position on a first shoulder formed at the bottom of the receiving bore and on a second shoulder formed on the outer wall of the central connector of suction, by retaining means capable of keeping the non-return valve in service against the discharge pressure, after removal of the removable cartridge from the hydraulic assembly.
  • the non-return valve advantageously consists, on the one hand, of a rigid flat annular plate, for example of metal, pierced with at least one through hole and the external cylindrical periphery of which is substantially adjusted in the bore while that its front periphery is supported on a first shoulder formed at the bottom of the receiving bore and, on the other hand, of a flat flexible ring applied to said annular plate, on the side opposite to the removable cartridge, to the inside the pump body, for closing the passage hole (s), said flexible ring being in abutment, at its inner peripheral part, on a second flat annular shoulder formed on the outer wall of the central suction fitting.
  • the planar flexible ring generally consists of an elastomer washer maintained applied to the rigid plate by a rigid central retaining ring, interposed between the flexible ring and the second shoulder, said central ring having an outer diameter markedly lower than that on which the passage hole or holes are arranged.
  • the planar flexible ring is constituted by a thin circular plate provided with a central hole and radial slots open towards the outside and which extend up to a continuous crown formed around the central hole , so as to constitute a series of lamella valves arranged radially, each facing at least one of the through holes.
  • the flat annular plate is held in abutment on the first and on the second shoulders, respectively by a first elastic ring or "circlips” housed in a groove made in the wall of the bore receiving and by a second elastic ring or “circlips” housed in a groove formed on the outer cylindrical wall of the central suction connection.
  • the flat annular plate is held in abutment on the first and on the second shoulders by the front support, on the one hand, at its outer periphery outside the area of the hole or holes, a first annular bearing formed on an end sleeve of the lower flange of said removable cartridge, engaged in the receiving bore and, on the other hand, to its outer periphery, a second annular bearing formed on the central suction connection of the lower flange of the removable cartridge.
  • the flat annular plate is held in abutment on the first and on the second shoulders by the front support, on the one hand, at its outer periphery, outside the area of the through holes of a first annular bearing surface of an end sleeve of a retaining flange, identical or similar to the lower flange of said removable cartridge, engaged in the receiving bore and, on the other hand, at its inner periphery, of a second annular bearing formed on the central suction connection of said retaining flange which comprises a bore for receiving the sleeve of the lower flange of the removable cartridge.
  • the present invention also relates to pumping units with at least two vertical centrifugal pumps, with removable hydraulic cartridge, mounted on a common suction and discharge casing, said pumps being capable of operating simultaneously and / or separately.
  • each vertical pump is constituted by a centrifugal pump assembly provided with a non-return valve according to the arrangements which have just been described.
  • the common casing may include an integrated distributor valve for the suction of the pumps, with four positions corresponding respectively: to the isolation of the suction of the two pumps, to the connection of the two pumps to the suction and at the connection to the suction of one of the two pumps while the other pump is isolated, so that after isolation of the suction of one of the pumps while the other remains in service, the insulated pump assembly cartridge can be removed by being isolated from the discharge pressure by the non-return valve.
  • the common casing may comprise, for each vertical centrifugal pump, a valve with two positions: opening and respectively closing of the suction of the pump, capable of to be controlled independently for each pump which is fitted with an integrated non-return valve capable of isolating it from the common delivery.
  • FIGS. 1 and 2 show a vertical multicellular pump with removable cartridge 1 of the centrifugal type, driven in rotation by a motor not shown, fixed above a support flange and connected to the pump rotor by a coupling 2 (partially shown in Figure 2) and a pump shaft 3.
  • the stages of the pump (here it is a five-stage pump) each consist of a rotor or pump wheel keyed or otherwise mounted on the shaft 3 and a stator forming a diffuser for recovering the kinetic energy transmitted to the liquid to transform it into pressure and bring the pumped liquid to the next downstream stage.
  • the assembly 4 of the stacked pump stages is inserted with its bearings in a tube 5 resistant to pressure and also to corrosion (made for example of stainless steel) and which is closed at each end, respectively by an upper flange 6 and by a lower flange 7.
  • the upper flange 6 is closed by a cover 8 which serves as a support for the electric drive motor (not shown) and comprises a flange 9 provided with a ring of holes for bolts or tightening rods 10 of the two flanges 6 and 7.
  • the lower flange 7 has an outer flange 11 pierced with a series of holes allowing the alternating passage of the bolts 10 and screws 12 for fixing the lower flange 7 on a pump body 13 come, in general , foundry and provided with a ring of threaded holes 14 for fixing around a bore 15 for receiving a sleeve 16 of the lower flange 7.
  • the flanges 6 and 7 each have a recess bore tight eption of the tube 5 thanks to O-rings 5a and 5b, each housed in a groove formed on the wall of the bore.
  • the lower flange 7 is stopped axially by a shoulder 17 which comes to bear on the flat upper face 17a formed at the outlet of the bore 15, perpendicular to the threaded holes 14.
  • the lower flange 7 has a central part 18 provided with peripheral passages 19 which are formed between connecting spokes to the flange 11 and are connected to an annular passage 20 formed inside the tube 5 between the outlet of the last stage of the pump and stacking 4 floors.
  • the central part 18 forms at its center a central suction connection 21 leading to the threaded or tapped suction opening 22 of the pump body 13.
  • the bore 15 opens onto an opening 23 formed inside the pump body 13 and connected to the threaded or tapped outlet outlet 24 and the bore 15 stops on a first annular shoulder 25 plane and perpendicular to the bore.
  • a flat annular non-return valve 26 is disposed at the bottom of the bore 15, bearing on the shoulder 25.
  • the non-return valve 26 which opens in the direction of discharge of the pump thus cuts the flow of peripheral passages 19 towards the discharge outlet 24.
  • the valve 26 here consists of a fairly rigid flat annular plate 27, for example of steel with a thickness of the order of 5 mm, and ground evenly flat on both sides to properly adjust and bear on the flat surface of the shoulder 25.
  • the outer cylindrical surface of the plate 27 can be adjusted with gentle friction in the bore 15 or may have a slight play with respect to this bore.
  • the plate 27 has at least one passage hole 28, more generally a series of passage holes 28 distributed regularly, their axis being placed for example roughly two-thirds outside the width of the plate.
  • the through holes 28 located near a transverse partition 70 isolating them from the intake can be omitted.
  • the face of the plate 27 which looks towards the discharge outlet 24 is covered with a planar flexible ring 29 which closes the through holes 28.
  • the flexible ring 29 is advantageously constituted by an elastomer washer several millimeters thick to resist to the effect of the discharge pressure which the plate on the holes 28.
  • the washer 29 is applied to the face 30 of the plate 27, on the one hand, due to its peripheral support on the side of the opening suction 22 on a shoulder 31 and, on the other hand, in its center, by means of a sheet metal washer 32 bearing on a second shoulder 33 formed around the outer wall of a suction fitting 34 of the pump body 13.
  • the flexible ring 29 can also be constituted by a thin circular plate made of a resistant material, for example made of sheet metal of a resistant metal such as brass or stainless steel.
  • the thin plate 29 ′ of stainless steel is provided with radial slots 29a of constant width or flared towards the exterior as shown in the figure. These outwardly open slots 29a extend to a continuous ring 29b which surrounds a central passage 87 having a diameter slightly greater than the machined outer diameter of the connector 34 above the shoulder 33.
  • a series is thus formed radial strips 29c elastically mounted in cantilever on the crown 29b and which can each close a passage hole 28 (only one of these holes 28 is shown in dotted lines on one of the strips 29c) to produce each, in cooperation with the flat surface of the rigid plate 27, a flap valve capable of withstanding high back pressures without exhibiting wear over time.
  • the rigid plate 27 of the non-return valve 26 is maintained, on the one hand, in direct support on the shoulder 25 by an elastic ring or "circlips" 35 housed in a groove of the bore 15 and, on the other hand, in indirect support via the flexible elastomer washer 29 on the shoulder 33 of the central connector 34 by an elastic ring or "circlips" 36 housed in a groove of the machined cylindrical surface 37 of the suction fitting 34.
  • the cylindrical surface 37 can also be used to guide the corresponding central bore of the plate 27 and of the elastic washer 29.
  • these connectors respectively carry conjugated sleeves 21a and 34a between which is housed an O-ring seal 38.
  • the seal between the rigid plate 27 and the shoulder 33 can be obtained by direct contact or by interposing a flat annular seal between the periphery of the plate 27 and the annular surface of the shoulder 33, which ensures a persistent seal. even when high pressures and / or temperatures prevail at the pump discharge.
  • the sleeves 16 and 21a are extended until they come to bear on the upper surface 27b of the rigid plate 27 under the tightening action of the screws 12.
  • the shoulder 17 is moved back so as not to come to bear on the flat upper face 17a and the extensions of the sleeves 16 and 21a are provided with a recess which surrounds the respective elastic rings 35 and 36, preventing them from coming into contact with the extensions.
  • the ends of these extensions are planar so as to bear well on the upper surface 27b.
  • the extensions of the sleeves 16 and 21a constitute large annular retaining surfaces capable of withstanding, with the plate 27, the high discharge pressures (which can reach several tens of bars in atmospheres sometimes exceeding 200 ° C) which prevail at the discharge outlet 24.
  • the discharge pressure which persists for example due to the connection to a pressure tank, immediately causes the elastic washer 29 to form, forming valve on the rigid plate 27 to close the holes 28. If the removable cartridge 1 has to be replaced, it is sufficient to unscrew the screws 12 after removing the pump drive motor, to remove the sleeve 16 of bore 15. Suction 22 when it is not under pressure produces only minute leaks which stop immediately.
  • the non-return valve 26 remains in position, held by the elastic rings or "circlips" 35 and 36, against the pressure prevailing at the discharge.
  • an O-ring seal 27a may be provided between the chamfered periphery of the annular plate 27 and the intersecting surfaces of the shoulder 25 and the bore 15.
  • the tightening the elastomer of the washer 29 between the plate 27 and the washer 32 guarantees, on the other hand, a certain tightness in the vicinity of the shoulder 33 of the connector 34.
  • the tightness of the non-return valve 26 does not persist for days but at least for several hours, which constitutes sufficient time to proceed with the removal and exchange of the cartridge 1 which is replaced by engagement of the sleeve 16 in the bore 15 followed by tightening of the screws 12 to properly secure the complete hydraulic cartridge 1 to the pump body 13.
  • the present invention proposes the solution shown in FIG. 2 which is less compact but more resistant and easier to adjust while remaining more flexible and more adaptable to existing pump bodies.
  • the elements represented in FIG. 2 and which are identical or similar to those of FIG. 1 have been given the same reference indices.
  • a flange 40 is provided similar or identical to the lower flange 7 of the cartridge 1 and which is fixed to the pump body 13 using a screw crown 12 passing through holes 42 of a flange 41.
  • the holes 42 are alternated on the flange 41 with holes 43 for the passage of longer fixing screws 44 coming to tighten the flange 11 of the flange 7 of the removable cartridge 1.
  • the flange 40 which serves as a flange for holding the non-return valve 26 has an end sleeve 45 which engages, sealingly, in the bore 15 thanks to the seal O-ring seal 39.
  • the sleeve 45 also comes to bear, by a peripheral front ring 47, on a flat peripheral annular zone of the valve plate 27, an O-ring seal 46 being interposed between a chamfer 48 of this front face 47 and, simultaneously anement, the bore 15 and the upper peripheral end face of the plate 27.
  • the central part 18a of the flange 40 comes to bear by a second bearing 49 formed on a central suction connection 21a, on the inner periphery of the plate 27 to press it, sealingly, on the elastomer washer 29 bearing on the shoulder 33 of the central connector 34 of the pump body 13.
  • the central part 18 of the lower flange 7 of the removable cartridge 1 comes in sealed support on the suction connection 34a of the flange 40, in the same way as for the sealed support between the connections 21 and 34 of Figure 1 or, as shown in Figure 2, via an elastomeric sleeve 50 capable of compensating for greater axial deviations.
  • the flange 40 has a bore 51 with an O-ring 52 for receiving the sleeve 16 of the lower flange 7 of the removable cartridge 1. It can be seen that if the bore 5c for receiving the tube 5 is capable of receiving, in an adjusted manner, not only the outer surface of the tube 5, but also the outer surface of the sleeve 16, it is possible to use identical flanges 7 and 40 for the embodiment of Figure 2, which is a big advantage in terms of mass production of pump assembly parts.
  • the non-return valve 26 of the pump is held in position directly by the support of the lower flange 7 on the rigid plate 27.
  • the overall height of the pump is less, but in order to be able to remove the removable cartridge 1, it is necessary to isolate the non-return valve 26 from the delivery beforehand because this valve is no longer held in position after removal of the cartridge 1.
  • This isolation can be carried out at using well-known means such as a non-return valve placed downstream of the discharge outlet 24 or else a cut-off valve.
  • the block with two pumps shown in FIGS. 3 and 4 comprises a foundry casing 60 with base 61 and with two inlets 62 and 63 and two liquid outlets 64 and 65, the unused inlets being closed by threaded plugs 63a and 65a.
  • Two flat bases 66 and 67 for fixing the pump cartridge protrude upwards, surrounding central fluid inlet connections 68 and 69.
  • the bases 66 and 67 have threaded holes 14 on their upper flat face 17a. receiving screws such as screws 12 or 44 shown in Figures 1 and 2 and in Figure 3.
  • a receiving bore 15 similar to that shown in Figures 1 and 2 is provided inside the bases, this bore 15 opening at its periphery on a flat shoulder 25 for receiving the valve plate 27 and, on the side opposite to a partition 70 (also shown in Figures 1 and 2), on a passage 71 towards the discharge.
  • each of the bores 15 is shown, equipped at its bottom end with a non-return valve 26 held in position by a flange 40 fixed by screws 12 on the flat base 66 or 67.
  • Each of the flanges 40 of the same type as that shown in FIG. 2, is ready to receive a removable cartridge 1 of stators and rotors.
  • a valve or a valve 72 for distributing the suction is mounted in a bore 73 open on the outside and closed by a sleeve 74 to allow passage to the outside, from sealingly, an operating handle 75.
  • the tap 72 is mounted on the connection between an intake chamber 76 inside the housing 60 and a channel 77 for distributing the intake to the intake fittings 68 and 69
  • the active part of the tap 72 has two cylindrical ends 78 and 79 serving as a guide in the bore 73 and a hollowed-out central part 80 which provides two passages 81 and 82 to each of the suction fittings 68 and 69.
  • the solid part 84 of flared shape and with vertical central edge 83, of the hollowed-out central part 80 can come to close, by relying on a bearing 85, the passage towards the fitting 68 and, by relying on a bearing 86, the passage to the fitting 69.
  • the solid part 84 simultaneously blocks the admission to the two intake fittings 68 and 69.
  • the block with two pumps 60 When the block with two pumps 60 is in service on a single pump, for example that fixed on the base 66, and this pump is faulty, it is possible to start the other pump, manually or automatically, without risk of backflow on the faulty pump thanks to the non-return valve 26. If you want to change the removable hydraulic cartridge 1 of the faulty pump, simply turn the valve 72 by its operating handle 75 to bring the full part 84 to close the passage to the inlet fitting 68. After removing the removable cartridge, the non-return valve 26 mounted at the bottom of the bore 15 of the base 66 prevents any flow of fluid from the delivery by the other pump then in service, and it is possible to install a new hydraulic cartridge without leaking fluid.
  • the pump After replacing the hydraulic cartridge and its drive motor, the pump can be put back into service to discharge the pumped liquid through the non-return valve 26.
  • the pump unit operates with two pumps in parallel, in in the event of a failure of one of the two pumps, it is possible to switch over to a pump, dismantle the faulty pump without leakage and replace it with a pump in working condition which will then be put back into service to resume operation. works with two pumps.
  • the arrangement of the non-return valve according to the invention makes it possible, in all cases, to have a pumping group which is more compact, more reliable, easier to troubleshoot and therefore more economical.
  • multiple blocks can be provided for more than two vertical pumps in parallel.
  • a suction fitting 90 connected to the common suction leads to a suction inlet 91 formed in a switching block 92 turning in a sealed manner in a bore thanks to at least one annular seal 92a and connected, via a rod sealingly passing through a cover 94, to an external switching lever 95.
  • By rotating the block 92 by action on the lever 95 it is thus possible to isolate the suction of any pump that does not work or on which it is necessary to carry out maintenance or repair.
  • the non-return valve of each pump mounted according to the invention using the rigid plate 27 and the annular washer 29, isolates the common delivery chamber 71, crossed by the rod of the lever 95, from the circuit of the pump stopped or the pump on which a repair or exchange is carried out.
  • the rotary block 92 acts as a valve with two positions: open suction and closed suction, controlled independently for each pump by the external lever 95 or by any other suitable equivalent device, if necessary remote-controlled.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Cookers (AREA)
EP91400981A 1990-04-24 1991-04-12 Anordnung von vertikal orientierten Kreiselpumpen Expired - Lifetime EP0454529B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9005194 1990-04-24
FR9005194A FR2661218B1 (fr) 1990-04-24 1990-04-24 Ensemble de pompe centrifuge verticale.

Publications (2)

Publication Number Publication Date
EP0454529A1 true EP0454529A1 (de) 1991-10-30
EP0454529B1 EP0454529B1 (de) 1994-06-22

Family

ID=9396020

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91400981A Expired - Lifetime EP0454529B1 (de) 1990-04-24 1991-04-12 Anordnung von vertikal orientierten Kreiselpumpen

Country Status (8)

Country Link
US (1) US5201633A (de)
EP (1) EP0454529B1 (de)
AT (1) ATE107742T1 (de)
DE (1) DE69102580T2 (de)
DK (1) DK0454529T3 (de)
ES (1) ES2027944T3 (de)
FR (1) FR2661218B1 (de)
GR (1) GR920300021T1 (de)

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US8128340B2 (en) * 2004-03-08 2012-03-06 Gorman-Rupp, Co. Stacked self-priming pump and centrifugal pump
USD534547S1 (en) 2005-01-10 2007-01-02 The Gormon-Rupp Co. Stacked self-priming pump and centrifugal pump
US20090246039A1 (en) * 2006-01-09 2009-10-01 Grundfos Pumps Corporation Carrier assembly for a pump
US8202040B2 (en) * 2006-03-27 2012-06-19 Koenig Kevin J Pump header and implementation thereof
US7507066B2 (en) * 2006-03-27 2009-03-24 Koenig Kevin J Pump header body and modular manifold
US7946810B2 (en) * 2006-10-10 2011-05-24 Grundfos Pumps Corporation Multistage pump assembly
US8172523B2 (en) * 2006-10-10 2012-05-08 Grudfos Pumps Corporation Multistage pump assembly having removable cartridge
EP2112380A1 (de) * 2008-04-21 2009-10-28 DP Industries B.V. Mehrstufige Kreiselpumpe in Inline-Bauart
US8435016B2 (en) 2010-11-10 2013-05-07 Hamilton Sundstrand Corporation Vertical shaft pumping system with lubricant impeller arrangement
WO2014171809A2 (es) * 2013-04-19 2014-10-23 Bombas Internacionales Mexicanas, S.A De C.V. Bomba centrífuga vertical en línea multietapas
EP3171033A1 (de) * 2015-11-19 2017-05-24 Grundfos Holding A/S Mehrstufige kreiselpumpe mit gehäuseöffnung zur wartung eines axialschub-kolbens
EP3181908B1 (de) * 2015-12-17 2020-05-13 Grundfos Holding A/S Mehrstufige kreiselpumpe mit aus blech gebildeten zugankern
US11118584B2 (en) * 2016-06-29 2021-09-14 Itt Manufacturing Enterprises Llc Ring section pump having intermediate tie rod combination
CN110425152A (zh) * 2019-08-20 2019-11-08 济南金孚瑞供热工程技术有限公司 一种智能流体泵组
US20230332605A1 (en) * 2020-09-14 2023-10-19 IDA Business & Technology Park, Garrycastle Pumping System and Method of Use Thereof
CN113090534B (zh) * 2021-04-14 2022-07-08 台州阳春机电有限公司 一种直立使用的水泵

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GB1066594A (en) * 1963-04-19 1967-04-26 Pomorska Odlewnia I Emaliernia Submersible pumps with non-return valves
FR2105910A5 (de) * 1970-09-16 1972-04-28 Worthington Corp
GB1383467A (en) * 1972-06-16 1974-02-12 Rosenbauer Kg Konrad Fire-fighting centrifugal pump
US4244675A (en) * 1979-04-30 1981-01-13 Worthington Pump, Inc. Multi-stage barrel type centrifugal pump with resilient compensator means for maintaining the seals between interstage pumping assemblies
EP0172102A1 (de) * 1984-08-03 1986-02-19 Pompes Salmson Vielstufige Pumpe mit abnehmbarer Kartusche
EP0360697A1 (de) * 1988-09-23 1990-03-28 Olaer Industries Pumpenanlage, insbesondere für Bewässerung

Also Published As

Publication number Publication date
EP0454529B1 (de) 1994-06-22
DE69102580D1 (de) 1994-07-28
FR2661218B1 (fr) 1992-07-31
US5201633A (en) 1993-04-13
DK0454529T3 (da) 1994-07-25
ES2027944T3 (es) 1994-11-01
ATE107742T1 (de) 1994-07-15
FR2661218A1 (fr) 1991-10-25
GR920300021T1 (en) 1992-08-25
ES2027944T1 (es) 1992-07-01
DE69102580T2 (de) 1994-10-20

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