EP0296952B1 - Pompe centrifuge autoamorçante pour liquides dangereux notamment radioactifs - Google Patents

Pompe centrifuge autoamorçante pour liquides dangereux notamment radioactifs Download PDF

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Publication number
EP0296952B1
EP0296952B1 EP88401531A EP88401531A EP0296952B1 EP 0296952 B1 EP0296952 B1 EP 0296952B1 EP 88401531 A EP88401531 A EP 88401531A EP 88401531 A EP88401531 A EP 88401531A EP 0296952 B1 EP0296952 B1 EP 0296952B1
Authority
EP
European Patent Office
Prior art keywords
pump
groove
wheel
hole
mobile equipment
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 - Lifetime
Application number
EP88401531A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0296952A1 (fr
Inventor
Jacques Dollfus
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.)
Societe Generale pour les Techniques Nouvelles SA SGN
Original Assignee
Societe Generale pour les Techniques Nouvelles SA SGN
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 Societe Generale pour les Techniques Nouvelles SA SGN filed Critical Societe Generale pour les Techniques Nouvelles SA SGN
Publication of EP0296952A1 publication Critical patent/EP0296952A1/fr
Application granted granted Critical
Publication of EP0296952B1 publication Critical patent/EP0296952B1/fr
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
    • F04D9/00—Priming; Preventing vapour lock
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps
    • F04D29/606—Mounting in cavities

Definitions

  • the pump described in this patent externally comprises a bowl on which are welded suction and discharge pipes and an internal hydraulic part which is arranged (with sealing) in said bowl and which can be dismantled vertically under protection.
  • the present invention is a pump whose configuration is that described in said French patent but which offers a different internal hydraulic part in particular better suited to the transfer of liquids with low flow rates (for example of the order of 2 m3 / h).
  • DE-A-761 490 describes a vertical pump, with a impeller with radial fins which has two symmetrical lateral channels; said pump is a submersible pump, not self-priming.
  • Cell 2 containing dangerous products is inaccessible to personnel while cell 1 is intended to remain clean and accessible.
  • the pump 4 is placed in the lower cell while the drive motor 7 is located in the cell 1.
  • the assembly of the motor comprises a lantern 8, the motor shaft 6 and a bearing box 5.
  • a coupling is placed between the motor and the shaft.
  • the pump consists of an external bowl with tubing, a removable equipment, a rotating hydraulic equipment, ball bearings, fixed seals, rotating seals.
  • the pump therefore consists of a bowl 15, of generally cylindrical shape, the upper part of which, open, forms a collar fixed to the concrete slab 3 and the lower part of which is closed.
  • the bowl has three welded pipes (and welded to the pipes): a suction pipe 18, a delivery pipe 24 and a ventilation pipe (not shown).
  • the suction pipe is welded to the pipe bringing the fluid to be pumped.
  • the discharge pipe is welded to the piping bringing the pumped liquid.
  • the ventilation pipe is connected to a general ventilation system.
  • the bowl should be considered as fixed and constituting a whole with the pipes.
  • this part is extractable and comprises a rotating assembly and a movable assembly (the mobile adjective being there to remind that said movable assembly is extractable but, in the operation of the pump, said movable assembly is of course fixed).
  • the rotating assembly is shown, mounted in the bowl, in FIG. 2 and in exploded view for the impeller in FIG. 3.
  • FIGS. 2, 3, 4, 5 and 6 we can also see the mobile assembly which, with a few details, presents itself as a part of revolution around the axis of the motor shaft 6 (vertical).
  • the upper part of the movable assembly comprises flat parts which, being supported on corresponding flat parts of the bowl, make it possible to ensure sealing by means of two seals 30 and 32 (FIG. 5).
  • the lower part of the moving assembly forms a cylindrical box bounded laterally by a wall 11, downwards by the removable base plate 14 (held in place by screws 33 -figure 6) pierced with an orifice provided with the nozzle 16 and upwards by a plate 10 perforated with holes 29.
  • the central part of this movable assembly surrounds the motor shaft 6, obviously leaving the necessary space for the seal (s) 9.
  • a horizontal partition 20 which separates the interior of the box into two parts, a lower part which will contain the impeller 13 and a high part (12 figure 7) forming a delivery chamber.
  • Said partition 20 therefore delimits the lower chamber in which the impeller 13 is arranged; this partition and the role it plays in the invention are described below with particular reference to FIGS. 4 and 6.
  • This partition has the shape of a thick circular disc hollowed out of a groove 23 on the underside. (It is recalled that Figure 4 shows the partition turned over to allow the groove to be seen).
  • the groove ends with a hole 21 passing through the partition 20.
  • a small plate 17 separates the two holes 21 and 22.
  • the groove 23 is surrounded by a flat part 35.
  • Figure 6 shows that the groove 23 has the shape of a half-oval and for example of a "basket handle”.
  • the radius Rm of the hub 34 of the impeller 13 must be significantly smaller than the inner radius Ri of the groove.
  • Figure 6 shows that there is a clearance between the impeller 13 and the partition 20 on the one hand and the base plate 14 on the other hand. This play must allow the free rotation of the wheel, but be weak enough for the capillary forces to ensure a seal on both sides of the impeller.
  • a play of 0.1 mm can be proposed as a preferred value.
  • a joint can be placed between the wall 11 and the boss 39 of the bowl or, in a preferred manner, metal segments 38 can be placed in grooves 36, 37 of the wall 11.
  • the segments are preferably 2 in number.
  • the plate 17 separating the two holes prevents the emulsion from falling through the hole 22 before the water-air separation.
  • the same cycle is repeated until all the air from the suction line has been evacuated to the discharge.
  • the liquid to be sucked then fills the pump which takes its normal hydraulic speed as a peripheral channel pump.
  • the suction is sucked into the bottom of the bowl through the tube 16, it is discharged through the hole 21 in the chamber 12 and then through the holes 29 in the discharge chamber 12 ′ and the discharge nozzle 24.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP88401531A 1987-06-22 1988-06-20 Pompe centrifuge autoamorçante pour liquides dangereux notamment radioactifs Expired - Lifetime EP0296952B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8708726A FR2616853B1 (fr) 1987-06-22 1987-06-22 Pompe centrifuge auto-amorcante pour liquides dangereux notamment radioactifs
FR8708726 1987-06-22

Publications (2)

Publication Number Publication Date
EP0296952A1 EP0296952A1 (fr) 1988-12-28
EP0296952B1 true EP0296952B1 (fr) 1992-03-04

Family

ID=9352340

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88401531A Expired - Lifetime EP0296952B1 (fr) 1987-06-22 1988-06-20 Pompe centrifuge autoamorçante pour liquides dangereux notamment radioactifs

Country Status (9)

Country Link
EP (1) EP0296952B1 (ja)
JP (1) JP2637477B2 (ja)
KR (1) KR960016790B1 (ja)
CN (1) CN1015126B (ja)
BR (1) BR8803160A (ja)
CA (1) CA1325552C (ja)
DE (1) DE3868719D1 (ja)
ES (1) ES2030184T3 (ja)
FR (1) FR2616853B1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4211033C2 (de) * 1992-04-02 2000-08-03 Ksb Ag Kreiselpumpenaggregat

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE761490C (de) * 1941-06-28 1954-01-25 Siemens Schuckertwerke A G Tauchpumpe
FR1334408A (fr) * 1962-06-25 1963-08-09 Moteurs Leroy Roue polaire d'alternateur
FR1334508A (fr) * 1962-06-29 1963-08-09 Wauquier Soc Nouv Ets Procédé de construction de pompes centrifuges à axe vertical et pompes fabriquées par ce procédé
FR1356951A (fr) * 1962-12-19 1964-04-03 Materiel Telephonique Pompe verticale
JPS4213729Y1 (ja) * 1964-03-16 1967-08-04
FR1593585A (ja) * 1968-10-09 1970-06-01
PL81606B1 (ja) * 1970-12-31 1975-08-30
JPS5730466Y2 (ja) * 1976-07-30 1982-07-03
FR2361558A1 (fr) * 1976-08-13 1978-03-10 Saint Gobain Techn Nouvelles Perfectionnements aux pompes centrifuges auto-amorcantes
JPS5824637B2 (ja) * 1976-09-30 1983-05-23 株式会社ワ−ルドケミカル 自吸式ポンプ
DE7714506U1 (de) * 1977-05-07 1977-08-18 Hermetic-Pumpen Gmbh, 7803 Gundelfingen Pumpen-aggregat, insbesondere spaltrohr- motorpumpen-aggregat
JPS5664193A (en) * 1979-12-06 1981-06-01 Anretsuto:Kk Self-suction box of clean water self-suction system line pump
JPS5896289A (ja) * 1981-12-04 1983-06-08 株式会社日立製作所 インタ−ナルポンプのガスケツト
DE3327922C2 (de) * 1983-08-03 1994-02-10 Bosch Gmbh Robert Kraftstofförderaggregat
JPS616700U (ja) * 1984-06-20 1986-01-16 共同エンジニアリング株式会社 自吸ポンプ
JPS6134388A (ja) * 1985-02-25 1986-02-18 Hitachi Ltd 渦流れ形ポンプ用ケ−シング部材の製造方法
JPS6375665U (ja) * 1986-11-07 1988-05-20

Also Published As

Publication number Publication date
KR960016790B1 (ko) 1996-12-21
CN1030815A (zh) 1989-02-01
EP0296952A1 (fr) 1988-12-28
ES2030184T3 (es) 1992-10-16
FR2616853B1 (fr) 1989-11-17
CN1015126B (zh) 1991-12-18
KR890000795A (ko) 1989-03-16
CA1325552C (en) 1993-12-28
JPH01117994A (ja) 1989-05-10
JP2637477B2 (ja) 1997-08-06
BR8803160A (pt) 1989-02-08
DE3868719D1 (de) 1992-04-09
FR2616853A1 (fr) 1988-12-23

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