EP2617997B1 - Anzeigevorrichtung für den Membranbruch für hydraulisch angetriebene Pumpe. - Google Patents

Anzeigevorrichtung für den Membranbruch für hydraulisch angetriebene Pumpe. Download PDF

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Publication number
EP2617997B1
EP2617997B1 EP13151462.2A EP13151462A EP2617997B1 EP 2617997 B1 EP2617997 B1 EP 2617997B1 EP 13151462 A EP13151462 A EP 13151462A EP 2617997 B1 EP2617997 B1 EP 2617997B1
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EP
European Patent Office
Prior art keywords
piston
chamber
pump
duct
diaphragm
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.)
Not-in-force
Application number
EP13151462.2A
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English (en)
French (fr)
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EP2617997A1 (de
Inventor
Rémy Lefebvre
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.)
Milton Roy Europe SA
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Milton Roy Europe SA
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Publication of EP2617997A1 publication Critical patent/EP2617997A1/de
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Publication of EP2617997B1 publication Critical patent/EP2617997B1/de
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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
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/06—Pumps having fluid drive
    • F04B43/067—Pumps having fluid drive the fluid being actuated directly by a piston
    • 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
    • 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
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making

Definitions

  • the invention relates to a device for detecting the rupture of a diaphragm of a hydraulically actuated pump.
  • the invention also relates to a method of mounting such a device on a pump and a pump equipped with such a device.
  • Hydraulically actuated pumps preferably comprise at least two membranes. See FR 2533636 which describes a device for detecting the rupture of such membranes. It is possible to detect in a simple way the rupture of one of the two membranes, by monitoring the pressure prevailing in the space existing between the two membranes.
  • Hydraulically actuated diaphragm pumps comprising a composite membrane which comprises between two thin membranes, a thick intermediate membrane in the form of an elastically deformable arch.
  • the pump comprises a duct formed in the thickness of the intermediate membrane which has an end which opens out of the pump and an end connected to at least one drainage channel.
  • the drainage channel is also formed in the thickness of the intermediate membrane to connect to the conduit the spaces extending between each of the faces of the intermediate membrane and the thin membrane opposite.
  • a device for detecting a rupture of the membrane is implanted at the outlet of the conduit of the intermediate membrane.
  • An example of such a degassing process consists in a first step of injecting, for example by means of a syringe, oil at the level of the conduit of the intermediate membrane. The oil then fills the drainage channel and the gap between the thin membranes and the intermediate membrane.
  • this oil is sucked by means of the syringe, thereby partially entraining air which was trapped between the thin membranes and the intermediate membrane.
  • the detection device is mounted on the pump and the pump is started with a progressive loading which has the effect of expelling the air still present between the thin membranes and the intermediate membrane under the effect of pressure prevailing on both sides of the composite membrane.
  • An object of the invention is to provide a means for improving the degassing process of a hydraulically actuated pump.
  • the device comprises a piston mounted to move in translation in the hollow body, the piston comprising a first portion which cooperates sealingly with the first chamber and which is traversed by a bore of diameter greater than the diameter of a ball free of the non-return valve and a second portion which is adapted to cooperate sealingly with the first portion to form a closed end of the piston opposite to the second end of the body.
  • the device according to the invention is arranged on the pump without the free ball of the non-return valve and the second portion of the piston. Then, the oil necessary for the degassing of the pump is poured directly through the first portion of the piston. The oil then escapes to the pump through the hollow body duct.
  • the first portion of the piston is closed for example by the second portion of the piston.
  • the piston is then raised and lowered in successive phases in the first chamber which allows to drive a portion of the air that was trapped in the pump at the membrane.
  • the second portion of the piston is removed.
  • the free ball of the non-return valve is inserted into the bore of the first portion so as to naturally be placed on a seat of the non-return valve.
  • the second portion of the piston is then arranged on the first portion to close the end of the piston.
  • the pump is then started with a progressive loading which has the effect of expelling the air still present in the pump at the level of the membrane.
  • the device according to the invention thus makes it possible to ensure a phase of filling the pump with the oil necessary for degassing and to ensure a degassing phase in addition to ensuring a rupture detection of a membrane.
  • the fact of keeping a single device for filling, degassing and detection makes it possible to maintain a slight depression in the first chamber of the hollow body. A small portion of the air trapped in the pump at the membrane is thus discharged continuously which increases the efficiency of the degassing process by the device according to the invention.
  • a second chamber is formed in the hollow body between the first chamber and the conduit, the second chamber having a diameter greater than the diameter of the first portion of the piston.
  • the second portion of the piston is removed and the first portion of the piston lowered at the level of the second chamber.
  • the free ball of the non-return valve is then inserted into the bore of the first portion so as to naturally be placed on the seat of the non-return valve.
  • the second portion of the piston is then arranged on the first portion so as to close the end of the piston.
  • the piston is then raised to cooperate sealingly with the first chamber, which has the effect of causing a depression in the first chamber and the second chamber.
  • the air still present in the pump at the level of the membrane is thus expelled into said chambers in a natural manner. It is no longer necessary to interrupt a degassing process by stopping the start of the pump since the air is driven continuously from the membrane to the device according to the invention.
  • the piston comprises a stop intended to cooperate with the first chamber to stop a stroke of the piston before the first portion of the piston enters the second chamber.
  • the degassing process is interrupted when an operator considers that the air trapped between the thin membranes and the intermediate membrane has been completely expelled.
  • the operator uses the flow rate of the pump to make this evaluation and it is common to note that several identical pumps commissioned by different operators offer different flow rates depending on when operators have interrupted the degassing process. Flow differentials of 10% to 15% have thus been observed. This disadvantage is further increased for low flow pumps.
  • the invention also relates to a method of mounting such a device on a pump and a pump equipped with such a device.
  • the hydraulically actuated pump here comprises a composite membrane 1 which comprises an intermediate membrane 2 between a first thin membrane 3 and a second thin membrane 4.
  • the intermediate membrane 2 is thick and in the form of an elastically deformable arch.
  • the pump comprises a duct 5 which is formed in the thickness of the intermediate membrane 2 and has a first end opening out of the pump and a second end connected to at least one drainage channel.
  • the second end is connected to a first drainage channel 6 and a second drainage channel 7.
  • Each drainage channel is also formed in the thickness of the intermediate membrane, here transversely to the conduit 5, to connect to the conduit 5 the spaces extending between each of the faces of the intermediate membrane 2 and the thin membrane opposite.
  • the pump further comprises a pumping chamber 10 delimited here by both the first thin membrane 3 and by a pumping head 11.
  • the pumping head 11 comprises a suction pipe 12a and a discharge pipe 12b of a
  • the pump also comprises an actuating chamber 13 which is filled with fluid and which is delimited here by the second thin membrane 4, a pump body 14, and a part of the pump. front of a piston 15 movably mounted in said actuating chamber 13 for moving the fluid in said chamber.
  • the composite membrane 1 In use, the composite membrane 1, subjected to this movement of fluid in the actuating chamber 13, will deform. This results in a volume variation of the actuating chamber 13 which corresponds to the displacement of the piston 15 in said actuating chamber 13 and which is transmitted to the pumping chamber 10 by the composite membrane 1.
  • Such a pump being well known from the prior art, it will not be described in more detail here.
  • Such a pump is for example described in the French application FR 2 934 332 or the French application FR 2,670,537 .
  • Such a pump is considered a double diaphragm pump because of its two thin membranes.
  • the pump here comprises a rupture detection device 20 according to the invention which allows the detection of the rupture of one of the thin membranes of the composite membrane 1.
  • the device 20 is mounted on the pump at the outlet of the conduit 5 of the membrane intermediate 2.
  • said device 20 comprises a hollow body 21 in which a first chamber 22 is formed at a first end of the body 21.
  • a conduit 23 connects the first chamber 22 to a second end of the body 21.
  • the device 20 is here arranged on the pump so that the conduit 23 of the body 21 is connected to the conduit 5 of the intermediate membrane 2.
  • the device 20 further comprises a non-return valve 24 disposed in the conduit 23 to be passed in the direction of the second end of the body towards the first chamber 22.
  • the non-return valve 24 comprises in a manner known per se a free ball 25 resting on a seat formed in the conduit 23.
  • the device 20 comprises a piston 26 mounted to move in translation in the body 21.
  • the piston 26 comprises a first portion 27 which cooperates sealingly with the first chamber 22 and which is traversed by a bore of diameter greater than diameter of the free ball 25
  • the first portion 27 is shaped into a head 27a and a piston rod 27b, the head 27a being the portion of the first portion 27 adapted to cooperate sealingly with the first chamber 22.
  • the head 27a here comprises a groove in which is disposed a seal 28 which is intended to cooperate with walls of the first chamber 22.
  • the first end of the body 21 has a first stop 29 to stop a stroke of the piston 26 and thus prevent the head 27a of the piston 26 from coming out of the body 21.
  • the first end of the body 21 has a groove in which a resilient ring is arranged to form the first stop 29.
  • the elastic ring cooperates here with the piston head 27a to stop the stroke of the piston.
  • the piston 26 also comprises a second portion 33 which is adapted to cooperate sealingly with the rod 27b to form a closed end of the piston 26 opposite the second end of the body.
  • a second chamber 30 is formed in the hollow body 21 between the first chamber 22 and the conduit 23 of the body 21, the second chamber 30 having a diameter greater than the diameter of the first portion 27 of the piston.
  • the rod 27b of the piston comprises a second stop 32 to stop a stroke of the piston and prevent the head of the piston 27b from entering the second chamber 30.
  • the rod 27b has a groove in which is arranged an elastic ring to form the second stop 32.
  • the elastic ring forming the second stop 32 cooperating here with the elastic ring forming the first stop 29 to stop the stroke of the piston.
  • the piston head 27b is only movable in translation in the first chamber 22.
  • the device 20 here also comprises means for covering the hollow body 21 which are arranged on the first end of the body 21 to form a closed upper part of the device 20 opposite the part of the device 20 in contact with the pump.
  • means for covering the hollow body 21 comprise a transparent cover 31 arranged on the first end of the body 21 to form an upper part of the device 20 opposite the part of the device 20 in contact with the pump, the transparent cover 31 being here shaped to allow a stroke of the piston 26 to the first stop 29.
  • the second portion 33 of the piston 26 is then colored.
  • the device 20 is mounted as follows on the pump.
  • the body 21 is mounted on the pump so that the conduit 23 of the body 21 is sealingly connected to the conduit 5 of the intermediate membrane 2.
  • the first portion 27 of the piston is then inserted into the body 21 to be in sealing contact with the first chamber 22.
  • a fluid necessary for the degassing of the pump for example oil
  • oil is poured directly through the first portion 27 of the piston.
  • the oil then evacuates towards spaces formed between each thin membrane and the intermediate membrane 2 through the conduit 23 of the body 21, the conduit 5 of the intermediate membrane 2 and the drainage channels 6, 7.
  • the oil is poured until it fills a portion of the second chamber 30.
  • a plug 34 is arranged on the first portion 27 of the piston to cooperate sealingly with the drilling of the first portion.
  • the piston 26 is then raised and lowered in successive phases in the hollow body 21, the head 27a always remaining in sealed contact with the wall of the first chamber 22. Part of the air present between the thin membranes and the intermediate membrane 2 is then driven to the surface of the volume of oil in the second chamber 30 by the pumping caused by the piston 26.
  • Part of the degassing is thus performed by the device according to the invention.
  • the plug is removed from the first portion 27 of the piston.
  • the elastic ring of the second stop 32 is removed from the rod 27b and the first portion 27 of the piston is lowered so that the head 27a of the first portion is at the level of the second chamber 30.
  • the pressure prevailing in the first chamber 22 and in the second chamber 30 is then equal to the atmospheric pressure.
  • the free ball 25 is inserted into the bore of the first portion 27 so as to naturally be placed on the seat of the non-return valve 24 by gravity.
  • the second portion 33 of the piston is then arranged on the first portion 27 so as to close the end of the piston 26.
  • the piston 26 is then raised until the head 27a cooperates sealingly with the first chamber 22.
  • the pressure in the first chamber 22 and in the second chamber 30 then becomes less than atmospheric pressure, which creates a vacuum in said chambers.
  • the air still present between thin membranes and the intermediate membrane is then naturally driven to the surface of the volume of oil in the second chamber 30 due to this depression.
  • the degassing of the pump is done continuously and automatically by the vacuum maintained in the chambers.
  • the degassing can be done during a handling and a transport of the pump to a customer so that at the start of the pump by the customer, there is almost no residual air between the thin membranes and the membrane intermediate.
  • the thin membranes are then very well bonded to the intermediate membrane which ensures a good performance of the pump from its start.
  • the piston 26 is raised until the elastic ring of the second stop 32 can be replaced on the rod 27b that is to say until the two stops cooperate.
  • the piston 26 is then held in a raised position where the head 27a cooperates sealingly with the first chamber 22, the cooperation of the two stops preventing the head 27a from descending into the second chamber 30.
  • the depression in the first chamber 22 and in the second chamber 30 is maintained without an operator or additional system is required to maintain the piston in this raised position.
  • the cover 31 is mounted on the device, once the piston 26 raised.
  • the operator can easily detect a problem of rupture of the membrane, the second colored portion 33 of the piston 26 then being easily visible through the transparent cover 31.
  • the device according to the invention makes it possible to perform other functions than the rupture detection of one of the membranes, such as filling the pump with oil necessary for degassing and degassing of the pump.
  • the device is particularly suitable for small flow pumps comprising two membranes for which the trapping of the smallest volume of air between the two thin membranes degrades the performance and accuracy of the pump.
  • the device according to the invention may be arranged on other types of pumps than that described.
  • the device can be arranged on a hydraulically actuated pump comprising two membranes tightly sealed at their periphery on a fixed structure comprising an annular piece interposed between the two membranes, an internal space between the two membranes being in communication with at least one duct formed in the thickness of the annular piece, said duct being connected to the conduit of the device according to the invention.
  • a pump is for example described by the French application FR 2,624,922 .
  • the different parts of the piston may be shaped differently from what has been described.
  • the first portion 27 may form a piston head and the second portion 33 a piston rod.
  • the body of the device may not include a second chamber 30 between the first chamber 22 and the conduit 23 of the device 20.
  • the degassing of a pump on which the device will be mounted will however be less effective with a device without second chamber, no depression can not be created in the hollow body.
  • the device may not include cover means.
  • the device may not have a transparent cover 31.
  • the second portion 33 of the piston 26 will then be colored.
  • the device comprises means for covering the hollow body 21 which comprise a cover 40 arranged on the first end of the body to form an upper part of the device opposite to the part of the device in contact with the pump, the cover 40 being shaped to allow a stroke of the piston 26 to the first stop 29.
  • An inductive sensor is arranged on said cover 40 so as to generate an electromagnetic field in a closed volume defined by the cover 40, the hollow body 21 and the piston 26.
  • the second portion 33 of the piston 26 is then made of an electrically conductive material, for example a metallic material. In case of rupture of one of the membranes, by the movement of the piston 26, the second portion 33 of the piston will change the electromagnetic field generated by the inductive sensor which will identify said membrane rupture.
  • the cover 40 is transparent.
  • the inductive sensor detects a change in the electromagnetic field that it generates, the operator can visually check whether the piston 26 has moved or not and thus ensure whether or not there is a problem of rupture. of membrane.
  • the different mounting steps of the device 20 on the pump may be different from those described.
  • a plug 34 is arranged on the first portion 27 of the piston to cooperate sealingly with the drilling of the first portion 27 during a first degassing phase

Claims (10)

  1. Vorrichtung zur Erfassung eines Membranbruchs einer hydraulisch angetriebenen Pumpe, umfassend:
    - einen Hohlkörper (21), in dem eine erste Kammer (22) an einem ersten Ende des Körpers ausgebildet ist, wobei eine Leitung (23) die erste Kammer mit einem zweiten Ende des Körpers verbindet,
    - ein Rückschlagventil (24), das in der Leitung angeordnet ist, um in der Richtung vom zweiten Ende des Körpers zur ersten Kammer durchlässig zu sein,
    wobei die Vorrichtung dadurch gekennzeichnet ist, dass sie einen Kolben (26) umfasst, der in dem Hohlkörper translatorisch beweglich gelagert ist, wobei der Kolben einen ersten Abschnitt (27) umfasst, der auf dichte Weise mit der ersten Kammer zusammenwirkt und von einer Bohrung mit einem Durchmesser durchsetzt ist, der größer als der Durchmesser einer freien Kugel (25) des Rückschlagventils ist, sowie einen zweiten Abschnitt (33), der dazu geeignet ist, auf dichte Weise mit dem ersten Abschnitt zusammenzuwirken, um ein geschlossenes Ende des Kolbens entgegengesetzt zum zweiten Ende des Körpers auszubilden.
  2. Vorrichtung nach Anspruch 1, wobei eine zweite Kammer (30) in dem Hohlkörper (21) zwischen der ersten Kammer (22) und der Leitung (23) ausgebildet ist, wobei die zweite Kammer einen Durchmesser hat, der größer als der Durchmesser des ersten Abschnitts (27) des Kolbens ist.
  3. Vorrichtung nach Anspruch 2, wobei der Kolben (26) einen Anschlag (32) umfasst, der dazu bestimmt ist, mit der ersten Kammer (22) zusammenzuwirken, um einen Hub des Kolbens zu stoppen, bevor der erste Abschnitt (27) des Kolbens in die zweite Kammer (30) eindringt.
  4. Vorrichtung nach Anspruch 1, umfassend einen Anschlag (29), der im Bereich des ersten Endes des Körpers (21) angeordnet und dazu bestimmt ist, mit dem Kolben (26) zusammenzuwirken, um einen Hub des Kolbens zu stoppen, bevor der erste Abschnitt (27) des Kolbens vollständig aus dem Hohlkörper (21) austritt.
  5. Vorrichtung nach Anspruch 1, umfassend Mittel (31, 40, 41) zur Abdeckung des Hohlkörpers (21), die auf dem ersten Ende des Körpers (21) angeordnet sind, um einen geschlossenen oberen Teil der Vorrichtung zu bilden, der zu einem unteren Teil der Vorrichtung, der mit Mitteln zur Verbindung mit der Pumpe versehen ist, entgegengesetzt ist.
  6. Vorrichtung nach Anspruch 5, wobei die Mittel zur Abdeckung des Hohlkörpers (21) eine transparente Kappe (31) umfassen, die auf dem ersten Ende des Körpers (21) angeordnet ist, und der zweite Abschnitt (33) des Kolbens (26) eingefärbt ist.
  7. Vorrichtung nach Anspruch 1, wobei der erste Abschnitt (27) zu einem Kopf (27a) und einer Kolbenstange (27b) geformt ist, wobei der Kopf der Teil des ersten Abschnitts ist, der dazu geeignet ist, auf dichte Weise mit der ersten Kammer (22) zusammenzuwirken.
  8. Verfahren zur Montage der Vorrichtung nach Anspruch 1 an einer Pumpe, umfassend die Schritte:
    - Anordnen des Körpers (21) an der Pumpe,
    - Einführen des ersten Abschnitts (27) des Kolbens in den Körper, um in dichtem Kontakt mit der ersten Kammer (22) zu stehen,
    - Einfüllen eines zur Entlüftung der Pumpe notwendigen Fluids direkt durch den ersten Abschnitt des Kolbens,
    - Einfügen der freien Kugel (25) in die Bohrung des ersten Abschnitts,
    - Anordnen des zweiten Abschnitts (33) des Kolbens an dem ersten Abschnitt.
  9. Verfahren zur Montage nach Anspruch 8, wobei die Vorrichtung eine zweite Kammer (30) umfasst, die in dem Hohlkörper (21) zwischen der ersten Kammer (22) und der Leitung (23) ausgebildet ist, wobei die zweite Kammer einen Durchmesser hat, der größer als der Durchmesser des ersten Abschnitts (27) des Kolbens ist, wobei das Verfahren dann die Schritte umfasst:
    - Absenken des ersten Abschnitts des Kolbens auf den Bereich der zweiten Kammer vor dem Einfügen der freien Kugel (25) des Rückschlagventils (24) und Anordnen des zweiten Abschnitts (33) des Kolbens auf dem ersten Abschnitt, und
    - Anheben des Kolbens (26), derart, dass der erste Abschnitt auf dichte Weise mit der ersten Kammer zusammenwirkt.
  10. Hydraulisch angetriebene Membranpumpe, umfassend eine Komposit-Membran (1), die zwischen zwei dünnen Membranen (3, 4) eine dicke Zwischenmembran (2) in Form einer elastisch verformbaren Kappe umfasst, wobei die Pumpe eine Leitung (5) umfasst, die in der Dicke der Zwischenmembran (2) ausgebildet ist und ein Ende hat, das außerhalb der Pumpe mündet, sowie ein Ende, das mit mindestens einem Ableitungskanal (6, 7) verbunden ist, wobei der Ableitungskanal ebenfalls in der Dicke der Zwischenmembran (2) ausgebildet ist, um mit der Leitung (5) der Pumpe die Zwischenräume zu verbinden, die sich zwischen jeder der Seiten der Zwischenmembran und der gegenüberliegenden dünnen Membran erstrecken, wobei das Ende der außerhalb der Pumpe mündenden Leitung mit der Leitung (23) einer Vorrichtung nach einem der Ansprüche 1 bis 7 verbunden ist.
EP13151462.2A 2012-01-17 2013-01-16 Anzeigevorrichtung für den Membranbruch für hydraulisch angetriebene Pumpe. Not-in-force EP2617997B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1250454A FR2985791B1 (fr) 2012-01-17 2012-01-17 Dispositif de detection de rupture d'une membrane d'une pompe a actionnement hydraulique, procede de montage d'un tel dispositif sur une pompe, et pompe equipee d'un tel dispositif

Publications (2)

Publication Number Publication Date
EP2617997A1 EP2617997A1 (de) 2013-07-24
EP2617997B1 true EP2617997B1 (de) 2014-04-30

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EP13151462.2A Not-in-force EP2617997B1 (de) 2012-01-17 2013-01-16 Anzeigevorrichtung für den Membranbruch für hydraulisch angetriebene Pumpe.

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Country Link
US (1) US9388802B2 (de)
EP (1) EP2617997B1 (de)
JP (1) JP5749749B2 (de)
CN (1) CN103216436B (de)
DK (1) DK2617997T3 (de)
ES (1) ES2478547T3 (de)
FR (1) FR2985791B1 (de)

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CN103452817B (zh) * 2013-08-19 2016-03-30 米顿罗工业设备（上海）有限公司 一种可用于高温介质传输的双隔膜结构的计量隔膜泵
CN114263596B (zh) * 2021-11-18 2023-05-16 华能核能技术研究院有限公司 隔膜式压缩机的膜片破裂确定方法、装置及电子设备
JP7284880B1 (ja) 2023-04-18 2023-05-31 匠 松下 プレートアイス保護具

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US6941853B2 (en) * 2003-12-02 2005-09-13 Wanner Engineering, Inc. Pump diaphragm rupture detection
JP4413741B2 (ja) * 2004-10-14 2010-02-10 日機装株式会社 ダイアフラムポンプ
FR2895036B1 (fr) * 2005-12-20 2008-02-22 Milton Roy Europ Sa Pompe a membrane a actionnement hydraulique avec dispositif de compensation des fuites
CN2929254Y (zh) * 2006-08-01 2007-08-01 中国铝业股份有限公司 一种隔膜泵隔膜破裂的检测装置
FR2941749A1 (fr) * 2009-02-03 2010-08-06 Milton Roy Europe Pompe a membrane elastique a commande hydraulique

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CN103216436B (zh) 2015-11-25
JP2013148091A (ja) 2013-08-01
FR2985791B1 (fr) 2014-03-07
ES2478547T3 (es) 2014-07-22
JP5749749B2 (ja) 2015-07-15
FR2985791A1 (fr) 2013-07-19
DK2617997T3 (da) 2014-07-07
US20130183172A1 (en) 2013-07-18
CN103216436A (zh) 2013-07-24
US9388802B2 (en) 2016-07-12
EP2617997A1 (de) 2013-07-24

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