EP0321338B1 - Dispositif de détection de rupture d'une membrane de pompe à membrane - Google Patents

Dispositif de détection de rupture d'une membrane de pompe à membrane Download PDF

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Publication number
EP0321338B1
EP0321338B1 EP88403175A EP88403175A EP0321338B1 EP 0321338 B1 EP0321338 B1 EP 0321338B1 EP 88403175 A EP88403175 A EP 88403175A EP 88403175 A EP88403175 A EP 88403175A EP 0321338 B1 EP0321338 B1 EP 0321338B1
Authority
EP
European Patent Office
Prior art keywords
groove
spacer
pump
diaphragm
membranes
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
EP88403175A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0321338A1 (fr
Inventor
Alain Laziou
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.)
Dosapro Milton Roy SA
Original Assignee
Dosapro Milton Roy SA
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 Dosapro Milton Roy SA filed Critical Dosapro Milton Roy SA
Priority to AT88403175T priority Critical patent/ATE61082T1/de
Publication of EP0321338A1 publication Critical patent/EP0321338A1/fr
Application granted granted Critical
Publication of EP0321338B1 publication Critical patent/EP0321338B1/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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009—Special features
    • F04B43/0081—Special features systems, control, safety measures
    • F04B43/009—Special features systems, control, safety measures leakage control; pump systems with two flexible members; between the actuating element and the pumped fluid

Definitions

  • the space which separates them is placed in communication with the outside of the pump by means of a pipe provided with a relief valve.
  • a flow in the pipe is the sign of the rupture of a membrane.
  • the practical implementation of this rupture detection comprises an annular spacer inserted between the peripheral parts of the two membranes.
  • a radial conduit is formed in this spacer to lead to the space between the membranes. So that the outlet of this conduit is not blocked by the membranes - between which the volume has been reduced to a minimum during the operation of the pump - a groove is formed in the inner surface of the spacer which forms the peripheral end. of this space, and at the bottom of which opens the above-mentioned conduit.
  • the two membranes and the intermediate spacer, sandwiched between them are fixed to the pump body by clamping between an annular bearing formed on the pump body (hydraulic control chamber side) and an annular bearing formed on the pump head (working chamber side) when the head and the body are assembled. More precisely, these ranges are provided on the front and rear grids for supporting the membranes at each of the extreme points of their travel.
  • the invention intends to remedy this drawback by proposing an improved membrane rupture detection device which is also easier to manufacture and of lower cost.
  • the subject of the invention is a device for detecting a rupture of a hydraulically actuated diaphragm pump diaphragm, consisting of an annular spacer sandwiched between the peripheral zones of at least two adjacent membranes, the assembly being clamped peripherally between two elements of the pump body, the annular spacer comprising at least one radial duct ensuring the communication of the space delimited by the two membranes and the exterior of the pump, in which the radial duct opens into a groove in the internal face of the annular spacer, the walls of the groove converging towards the center of the ring.
  • the device according to the invention is easy to manufacture because, from a turned blank, it suffices to carry out an operation of pushing the two sides of the groove towards each other, to give them the desired external profile. while narrowing their spacing in order to prevent the penetration of the membrane material into this groove.
  • the annular spacer 6 has an internal groove 13 whose volume is in communication with the interior space delimited by the membranes 1 and 2.
  • This groove 13 communicates by at least one radial duct 14 with an external pipe which is not shown but which can be connected to the spacer by means of a screw or welded connection in the orifice 15, with, if necessary, the interposition of a non-return valve.
  • This external pipe can lead to a membrane rupture detector constituted for example in the form of an alarm.
  • each wall 13 a , 13 b of the groove 13 is urged towards each other.
  • the communication gap of the throat with the inter-membrane space is therefore narrower than the width of the bottom of the groove 13. It follows that it is impossible for either of the membranes to penetrate into the groove 13 under the effect of the prevailing pressure in one or other of the chambers 9, 10.
  • the outer surface of each wall 13 a , 13 b is curved, which gives the profile of the spacer 6 in the region of the groove 13, such that 'it appears in the axial section of the figure, the shape of a warhead.
  • the walls 13 a and 13 b form a support of shape adapted to the curvature of the membrane which prohibits flexing thereof on a too small radius of curvature.
  • the spacer has on its flanks circular grooves 16, in which the material of the membranes creeps when they are pinched.
  • the support plates may have similar grooves to also accommodate the material which flows.
  • This material can be polytetrafluoroethylene (PTFE) or in the case of composite membranes a layer of (PTFE) and a layer of elastomer.
  • the invention finds an interesting application in the field of diaphragm pumps.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
EP88403175A 1987-12-17 1988-12-14 Dispositif de détection de rupture d'une membrane de pompe à membrane Expired - Lifetime EP0321338B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88403175T ATE61082T1 (de) 1987-12-17 1988-12-14 Anzeigevorrichtung fuer den membranbruch einer membranpumpe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8717636A FR2624922B1 (fr) 1987-12-17 1987-12-17 Dispositif de detection de rupture d'une membrane de pompe a membrane
FR8717636 1987-12-17

Publications (2)

Publication Number Publication Date
EP0321338A1 EP0321338A1 (fr) 1989-06-21
EP0321338B1 true EP0321338B1 (fr) 1991-02-27

Family

ID=9357981

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88403175A Expired - Lifetime EP0321338B1 (fr) 1987-12-17 1988-12-14 Dispositif de détection de rupture d'une membrane de pompe à membrane

Country Status (9)

Country Link
US (1) US4881876A (es)
EP (1) EP0321338B1 (es)
JP (1) JPH01200078A (es)
AT (1) ATE61082T1 (es)
CA (1) CA1284747C (es)
DE (2) DE3861851D1 (es)
ES (1) ES2009734B3 (es)
FR (1) FR2624922B1 (es)
GR (2) GR890300133T1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7621296B2 (en) 2006-06-16 2009-11-24 Prominent Dosiertechnik Gmbh Separation element

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2657923B1 (fr) * 1990-02-08 1994-06-10 Milton Roy Dosapro Perfectionnement a un dispositif detecteur de rupture de membrane dans une pompe a membrane double.
ATE148202T1 (de) * 1991-05-03 1997-02-15 Regipur Polyurethan Anlagentec Mehrlagen-membran mit leckage-ableitung für membranpumpen
US5145331A (en) * 1991-07-29 1992-09-08 J. Wagner Gmbh Diaphragm pump
DE4136805A1 (de) * 1991-11-08 1993-05-13 Almatec Tech Innovationen Gmbh Doppelmembranpumpe
US5476368A (en) * 1992-08-20 1995-12-19 Ryder International Corporation Sterile fluid pump diaphragm construction
JPH074359A (ja) * 1993-05-06 1995-01-10 Almatec Technische Innovationen Gmbh ポンプ用ダイヤフラム
US6094970A (en) * 1998-12-15 2000-08-01 Milton Roy Company Leak detector for a pump
DE10233561B4 (de) * 2002-07-24 2008-02-21 Prominent Dosiertechnik Gmbh Sicherheitsmembran für eine Membranpumpe
DE202005001250U1 (de) * 2005-01-26 2006-06-08 GEMÜ Gebr. Müller Apparatebau GmbH & Co. KG Membrane für Membranventil
SE0900233A1 (sv) * 2009-02-24 2010-08-25 Tetra Laval Holdings & Finance Membranpumphuvud för en homogenisator
US8017409B2 (en) 2009-05-29 2011-09-13 Ecolab Usa Inc. Microflow analytical system
US8596648B2 (en) 2010-10-22 2013-12-03 Oshkosh Corporation Pump for vehicle suspension system
WO2013028729A1 (en) 2011-08-22 2013-02-28 Cummins Emission Solutions Inc. Urea solution pumps having leakage bypass
CN103352839A (zh) * 2013-07-26 2013-10-16 胜瑞兰工业设备（苏州）有限公司 一种开槽金属薄片引导隔膜泄漏装置
EP4039288A1 (en) * 2016-03-18 2022-08-10 DEKA Products Limited Partnership Pressure control gaskets for operating pump cassette membranes
CA3017940A1 (en) 2016-04-08 2017-10-12 Oshkosh Corporation Leveling system for lift device
DE102016216006A1 (de) * 2016-08-25 2018-03-01 Siemens Aktiengesellschaft Doppelmembran für eine Staubpumpe
DE102019109283A1 (de) * 2019-04-09 2020-10-15 Prominent Gmbh Membranbruchüberwachung
IT201900008754A1 (it) * 2019-06-12 2020-12-12 Gea Mech Equipment Italia S P A Pompa a doppia membrana per impiego in un apparato di omogeneizzazione di un prodotto fluido e metodo per rilevare perdite in tale pompa

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2662478A (en) * 1950-01-31 1953-12-15 Surre Francois Eugene Diaphragm pump and compressor
US3131638A (en) * 1962-07-05 1964-05-05 Lapp Insulator Company Inc Leak detecting device
DE1226740B (de) * 1963-07-25 1966-10-13 Hofer Andreas Anzeigevorrichtung fuer den Membranbruch an Membranverdichtern
FR1552305A (es) * 1967-12-15 1969-01-03
US3661060A (en) * 1970-08-05 1972-05-09 Duriron Co Diaphragms for high pressure compressors and pumps
DE3146222C2 (de) * 1981-11-21 1983-12-22 Franz 6305 Buseck Orlita Membranpumpe mit einer Membranbruchanzeigevorrichtung
FR2533636B1 (fr) * 1982-09-28 1987-03-20 Milton Roy Dosapro Dispositif de detection de rupture de membrane
US4569634A (en) * 1984-09-27 1986-02-11 Mantell Myron E Failure sensing diaphragm for a diaphragm pump
US4787825A (en) * 1984-09-27 1988-11-29 Myron Mantell Failure sensing device for a diaphragm pump
US4781535A (en) * 1987-11-13 1988-11-01 Pulsafeeder, Inc. Apparatus and method for sensing diaphragm failures in reciprocating pumps

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7621296B2 (en) 2006-06-16 2009-11-24 Prominent Dosiertechnik Gmbh Separation element

Also Published As

Publication number Publication date
CA1284747C (fr) 1991-06-11
GR890300133T1 (en) 1990-01-19
JPH01200078A (ja) 1989-08-11
US4881876A (en) 1989-11-21
ES2009734A4 (es) 1989-10-16
DE3861851D1 (de) 1991-04-04
DE321338T1 (de) 1989-11-16
FR2624922B1 (fr) 1990-04-27
ATE61082T1 (de) 1991-03-15
ES2009734B3 (es) 1991-10-16
FR2624922A1 (fr) 1989-06-23
GR3001689T3 (en) 1992-11-23
EP0321338A1 (fr) 1989-06-21

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