EP2626560B1 - Pompe hermétique - Google Patents

Pompe hermétique Download PDF

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Publication number
EP2626560B1
EP2626560B1 EP13153194.9A EP13153194A EP2626560B1 EP 2626560 B1 EP2626560 B1 EP 2626560B1 EP 13153194 A EP13153194 A EP 13153194A EP 2626560 B1 EP2626560 B1 EP 2626560B1
Authority
EP
European Patent Office
Prior art keywords
elastic tube
current
hermetic pump
impressed
winding
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
EP13153194.9A
Other languages
German (de)
English (en)
Other versions
EP2626560A1 (fr
Inventor
Ahmed Fadil
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.)
KSB SE and Co KGaA
Original Assignee
KSB AG
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Filing date
Publication date
Application filed by KSB AG filed Critical KSB AG
Publication of EP2626560A1 publication Critical patent/EP2626560A1/fr
Application granted granted Critical
Publication of EP2626560B1 publication Critical patent/EP2626560B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • F04B43/09—Pumps having electric drive

Definitions

  • the invention relates to a device for the hermetic pumping of liquids or gases, wherein the pumping operation is caused by the change of a volume in a pumping chamber, and a method for operating such a device.
  • WO 00/12896 A1 a structure in which a pumping chamber is provided with an inlet, which is equipped with a non-return valve, which causes the conveying fluid can only penetrate into the pumping chamber.
  • a check valve is provided on the outlet side.
  • the pumping chamber is made of elastic material. If the volume of the pumping chamber is increased, delivery fluid is sucked through the inlet, the non-return valve of the inlet is hereby opened, the outlet side closed. When reducing the volume, the flap of the inlet is closed, the outlet side is opened, so that the conveying fluid can leave the pump chamber via the outlet.
  • the change in the volume of the pump chamber is effected mechanically, for example directly by pressing on the pumping chamber.
  • the DE 4029250 A1 describes a device for generating pressure surges in liquids or gases, as it can be used for above-mentioned positive displacement pumps.
  • Magnetic or magnetizable particles are embedded in an elastomeric tube piece, the tube piece being surrounded by electromagnetic driver stages is, which can be activated in a repetitive process after a preselected, variably controllable clock successively according to their order by current pulses, wherein any peristaltic can be imposed.
  • the US 4,585,397 shows a hermetic pump which achieves a pumping action by means of two electrically operated bellows.
  • the US 6,352,455 shows a peristaltic pump, which achieves a pumping action by mechanical deformation of the hose.
  • the present invention is based on the object, a device for generating pressure surges in a hermetic pump consisting of an elastic tube which is arranged between an outlet-side valve and an inlet-side valve hermetically sealed in a housing to provide, which are simple and inexpensive should be.
  • the solution provides that in the hermetic pump on or in the elastic tube induction windings are provided which are electromagnetically coupled with an elastic winding surrounding the excitation winding.
  • the pump is particularly suitable for transporting mixtures of solid and liquid, with a gaseous portion is no impairment.
  • suitable valves are chosen that offer a compromise between fast reaction and good permeability, which significantly influences the efficiency of the pump.
  • the horizontal or vertical arrangement of the pump determine further characteristics of the valves, which can be selected for the pump according to the invention according to generally accepted rules.
  • an area between the housing and the elastic tube is filled with a cooling liquid.
  • a cooling of the elastic tube is necessary if very high currents are induced to deform the tube.
  • cooling options are provided in the elastic tube, which are designed for example as cooling channels.
  • a fuse may additionally be provided which protects the pump from leaking in the event of leakage of the elastic tube, as well as a sensor which registers the leakage and reports to a warning system.
  • the exciter winding in the longitudinal direction of the tube encloses a portion of the elastic tube. Due to the exact placement of the excitation winding along the elastic tube, the elastic properties of the tube material can be optimally utilized. At the ends of the pipe section a firm connection with the connection flanges is necessary. An expansion must be avoided in these areas.
  • the middle region of the elastic tube is designed for maximum deformation. In this area, the induction coil is arranged, which is surrounded by the field winding. By the electromagnetic interaction, it is possible that this area is stretched, whereby the volume of the elastic tube is increased. It is also possible to compress the elastic tube in this area, which reduces its volume.
  • the induction windings are formed as a network and / or braid of electrically conductive material to transmit forces occurring evenly in the elastic tube.
  • the forces that are necessary to stretch or compress the elastic tube are very high, which is why a uniform transfer is essential.
  • This fabric may additionally be bonded to a fabric of elastic material. Both together are then laminated between elastic sheath layers.
  • permanent magnets in the elastic tube in addition to the induction winding, in particular permanent magnets with high energy density, such as rare earth magnets.
  • a region between the housing and the elastic tube is filled with a cooling liquid.
  • a cooling of the elastic tube is necessary if very high currents are induced to deform the tube.
  • cooling options are provided in the elastic tube, which are designed for example as cooling channels.
  • a fuse may additionally be provided which protects the pump from leaking in the event of leakage of the elastic tube, as well as a sensor which registers the leakage and reports to a warning system.
  • a wind tank is provided to reduce pressure surges following the outlet-side valve. Due to the design of the flow over time is characterized by strong pulses. The use of said wind tank serves to smooth the outlet-side flow.
  • the invention describes a method for operating a hermetic pump wherein a current is impressed into the excitation winding, in particular a pulse-shaped current.
  • a current is impressed into the excitation winding, in particular a pulse-shaped current.
  • it is necessary to magnetize the induction winding. This is most easily achieved by impressing a short current pulse into the exciter winding.
  • the magnetized induction coil can then be attracted or repelled by the excitation winding, so that the effect of volume increase or decrease sets.
  • the impressed current pulse has a zero crossing.
  • the change of the current direction allows to generate a very large force between the two windings.
  • the current is impressed in successive pulse sequences, wherein the distance between two pulses takes into account the material properties of the elastic tube. Since the elastic tube is subject to inertia, it does not instantaneously deform with the concern of the force caused by the electromagnetic interaction, it responds delayed. This delay must be taken into account when impressing the current.
  • the current pulse is impressed, the elastic tube deforms and then returns to its original shape. Only after complete relaxation, a new current pulse is impressed into the exciter winding.
  • the inventive hermetic pump 1 is shown in a side view.
  • a housing 2 In a housing 2 is an elastic tube 3, which is tightly clamped at its upper end between the housing 2 and an outlet-side valve. At its lower end, the elastic tube 3 is braced with an inlet-side valve 5.
  • the two valves 4, 5 have flanges, not shown, by means of which the hermetic pump according to the invention can be installed in a system, wherein the material transported by the pump in the fluid chamber 6 comes into contact only with the elastic tube 3.
  • the housing 2 has in the central region via a field winding 7.
  • This field winding consists of electrically conductive coils which are used to generate an electromagnetic Field are provided.
  • This excitation winding 7 opposite is arranged on the elastic tube 3, an induction coil 8. If an electromagnetic field is excited in the field winding 7, a corresponding opposing field is thereby produced in the induction winding 8.
  • a force that causes an expansion of the elastic tube 3 develops. This expansion is proportional to the applied exciter field and causes an increase in volume in the elastic tube 3.
  • the illustrated hermetic pump can be combined in different ways. If several pumps are connected in parallel, the effect of pressure surges can be reduced and, at the same time, the flow rate can be arbitrarily increased. Serial arrangements of the pumps according to the invention make it possible to produce a conveyed material pressure differentiated for certain sections of a plant. Due to the compact design of the hermetic pump, it can be used in places where there is not enough space available for other pumps.
  • the Fig. 2 shows the arrangement of the windings in a section in a rest position of the pump.
  • the stator In the upper area of the Fig. 2 the stator is shown, wherein the stator-side field winding 7 is fixedly connected to a stator shell 9.
  • the stator jacket 9 is designed so that it absorbs all forces that occur during the pumping process. It secures the exciter winding 7 and provides sufficient electrical insulation, as well as cooling of the exciter winding 7.
  • the excitation winding 7 opposite is in the Fig. 2 the induction coil 8 shown.
  • This is in the in the Fig. 2 only indicated elastic tube 3 incorporated, taking into account that the spatial position of the induction coil 8 changes during the pumping process.
  • Both windings are in the Fig. 2 shown only schematically.
  • arrangements of the two windings 7, 8 are possible, which are aligned obliquely to the flow direction.
  • arrangements are possible in which the windings 7, 8 are not arranged in parallel in the idle state.
  • the Fig. 3 shows an alternative embodiment of the pump according to the invention, take in the permanent magnets 10, the effect of the induction coils.
  • the north-south orientation of the permanent magnets is in the Fig. 3 represented by N or S.
  • the elastic tube 3 which is designed as a bellows 11 in this embodiment, alternately permanent magnets 10 and excitation windings 7 are arranged between two folds of the bellows 11. If the exciter winding 7 is acted upon by a direct current in a first current direction, then a magnetic field is built up in the excitation winding 7, as is shown in FIG Fig. 3A , so in the upper part of the Fig. 3 is shown. This magnetic field of the exciter winding causes a contraction of the bellows.
  • the Fig. 4 shows a first scheme for using the described hermetic pump.
  • the course of the current is shown over time, as it is impressed into the exciter winding 7.
  • the middle curve shows the force that is built up between the excitation winding 7 and the induction winding 8, this results in a deflection of the elastic tube, which is shown in the lower curve.
  • a negative current is impressed, which induces a current in the induction coil 8.
  • the resulting force already causes a slight deflection of the elastic tube. If the maximum value is reached, a rapid change of the current direction, combined with a rise to the maximum value of the current in the positive direction, causes a force which leads to a very strong deflection of the elastic tube, whereby the actual pumping action arises.
  • the inertia of the elastic material causes a slow movement up to the maximum deflection, the elastic property ensures an equally sluggish return movement to the starting position.
  • the Fig. 5 shows a further scheme for using a hermetic pump according to the invention, wherein the impressed excitation current shows a section of a linear shape.
  • the upper curve again shows the course of the impressed current, the middle the force and the lower the deflection of the elastic tube.
  • the impressed current causes a force that leads to the deflection of the tube.
  • the duration of the impressed current pulse is based on the distance between the excitation winding and the induction winding. If this is too large, the induction is very low and maintaining the current is not meaningful.
  • the deflection of the elastic tube is comparable to that produced by the first scheme, but the course is smoother.

Landscapes

  • Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)

Claims (9)

  1. Pompe hermétique constituée d'un tube élastique (3), dans lequel le tube élastique (3) est disposé entre une soupape côté sortie (4) et une soupape côté entrée (5) de manière hermétiquement étanche dans un corps (2), dans lequel il est prévu sur ou dans le tube élastique (3) des enroulements d'induction (8) qui peuvent être couplés de manière électromagnétique à un enroulement d'excitation (7) enveloppant le tube élastique (3) pour transmettre une force au tube élastique (3), caractérisée en ce qu'une zone comprise entre le corps (2) et le tube élastique (3) est remplie d'un liquide de refroidissement.
  2. Pompe hermétique selon la revendication 1, caractérisée en ce que l'enroulement d'excitation (7) enveloppe une zone partielle du tube élastique (3) dans la direction longitudinale du tube élastique (3).
  3. Pompe hermétique selon la revendication 1 ou 2, caractérisée en ce que les enroulements d'induction sont réalisés sous la forme d'un réseau et/ou d'une tresse constituée d'un matériau électriquement conducteur.
  4. Pompe hermétique selon l'une quelconque des revendications précédentes, caractérisée en ce que des canaux destinés à acheminer un liquide de refroidissement sont prévus dans le tube élastique (3).
  5. Pompe hermétique selon l'une quelconque des revendications précédentes, caractérisée en ce qu'il est prévu dans le raccordement à la soupape côté sortie (4) un anémomètre destiné à réduire les chocs de pression.
  6. Procédé de mise en fonctionnement d'une pompe hermétique selon les revendications 1 à 6, caractérisée en ce qu'un courant est appliqué à l'enroulement d'excitation (7).
  7. Procédé selon la revendication 6, caractérisé en ce que le courant est appliqué de manière impulsionnelle.
  8. Procédé selon la revendication 6 ou 7, caractérisée en ce que l'impulsion de courant présente un passage à zéro.
  9. Procédé selon l'une quelconque des revendications précédentes, caractérisée en ce que le courant est appliqué sous la forme d'une série d'impulsions consécutives, dans lequel la distance entre deux impulsions tient compte des propriétés du matériau du tube élastique (3).
EP13153194.9A 2012-02-13 2013-01-30 Pompe hermétique Not-in-force EP2626560B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012202098A DE102012202098A1 (de) 2012-02-13 2012-02-13 Hermetische Pumpe

Publications (2)

Publication Number Publication Date
EP2626560A1 EP2626560A1 (fr) 2013-08-14
EP2626560B1 true EP2626560B1 (fr) 2017-06-21

Family

ID=47681718

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13153194.9A Not-in-force EP2626560B1 (fr) 2012-02-13 2013-01-30 Pompe hermétique

Country Status (2)

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EP (1) EP2626560B1 (fr)
DE (1) DE102012202098A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4585397A (en) * 1985-06-03 1986-04-29 International Business Machines Corporation Dual bellows pump with drive circuit through bellows
FR2650862B1 (fr) * 1989-08-11 1991-11-08 Salmson Pompes Dispositif de propulsion d'un fluide
DE4029249A1 (de) * 1990-09-14 1992-03-19 Peschel Manfred Vorrichtung zur erzeugung dreidimensionaler druckstoesse in einem fluid
DE4029250A1 (de) 1990-09-14 1992-03-19 Peschel Manfred Vorrichtung zur erzeugung von druckstoessen in fluessigkeiten und/oder gasen
AUPP546598A0 (en) 1998-08-26 1998-09-17 Bamford, John O. W. Flexible cell assembly
US6352455B1 (en) * 2000-06-22 2002-03-05 Peter A. Guagliano Marine propulsion device
WO2007013579A1 (fr) * 2005-07-29 2007-02-01 Kyushu Institute Of Technology Mécanisme d’entraînement à nanotube de carbone
DE102007019433A1 (de) * 2007-04-25 2008-10-30 Robert Bosch Gmbh Peristaltische Pumpe
US20100177011A1 (en) * 2009-01-12 2010-07-15 Sego Daniel J Flexible phased array antennas

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2626560A1 (fr) 2013-08-14
DE102012202098A1 (de) 2013-08-14

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