EP3004649B1 - Pumpenanordnung - Google Patents

Pumpenanordnung Download PDF

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Publication number
EP3004649B1
EP3004649B1 EP14726122.6A EP14726122A EP3004649B1 EP 3004649 B1 EP3004649 B1 EP 3004649B1 EP 14726122 A EP14726122 A EP 14726122A EP 3004649 B1 EP3004649 B1 EP 3004649B1
Authority
EP
European Patent Office
Prior art keywords
pump
pump arrangement
arrangement according
impeller
inner rotor
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.)
Active
Application number
EP14726122.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3004649A1 (de
Inventor
Patrick Drechsel
Markus Lay
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 SE and Co KGaA
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 KSB SE and Co KGaA filed Critical KSB SE and Co KGaA
Publication of EP3004649A1 publication Critical patent/EP3004649A1/de
Application granted granted Critical
Publication of EP3004649B1 publication Critical patent/EP3004649B1/de
Active 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
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/021—Units comprising pumps and their driving means containing a coupling
    • F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
    • F04D13/025—Details of the can separating the pump and drive area
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/021—Units comprising pumps and their driving means containing a coupling
    • F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/021—Units comprising pumps and their driving means containing a coupling
    • F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
    • F04D13/026—Details of the bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/10—Centrifugal pumps for compressing or evacuating
    • 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
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps

Definitions

  • the invention relates to a modular kit for designing sizes for a hydraulic size with different magnetic coupling sizes or for a magnetic coupling size and different hydraulic sizes for producing a pump arrangement according to the preamble of claim 1.
  • the invention also relates to such a pump arrangement.
  • Such a pump assembly is from DE 10 2004 003 400 A1 known, which has a drive rotor to increase the area of application, which is designed as a common part for external drive elements.
  • the DE 43 43 854 A1 discloses a magnetic pump for corrosive media, wherein the pump shaft consists of hard ceramic and the impeller bushing with the impeller and the magnet rotor bushing with the magnet rotor are cast in a torque-proof manner and the pump shaft is non-rotatably connected to the impeller bushing and the magnet rotor bushing via a polygonal profile.
  • a magnetic drive pump with permanent magnets made of certain materials is from the GB 994 322 A famous.
  • the US 4,871,301A discloses a magnetic drive pump with a bearing system that includes a lubrication system that uses the pumped medium as a lubricant and coolant in some cases.
  • a pump which has an axially adjustable impeller in order to adjust the distance between the impeller and the housing.
  • the pump has a removable module that includes the impeller, the impeller shaft, and a drive member.
  • the object of the invention is to provide a magnetic coupling pump arrangement in which the largest possible number of magnetic couplings with different diameters are available for one hydraulic size and as many different hydraulic sizes as possible can be used for one magnetic coupling size.
  • different containment shells ie different pressure levels and/or materials, should be usable within one magnetic coupling size.
  • the object of the invention is achieved by various adapter elements which connect the containment shell to the housing cover and have a mounting flange which rests against a contact surface of the housing cover on the side close to the interior.
  • a modular construction kit is available, which enables an efficient size design for a hydraulic size with different magnetic coupling sizes or for a magnetic coupling size and different hydraulic sizes.
  • a magnetic coupling size can be adapted to different hydraulic sizes by adapting the shape and/or size of the adapter element. This covers the large range of torques required for one and the same hydraulic size due to different speeds, delivery heights, delivery volumes and densities of the medium to be delivered. It is no longer necessary to use the maximum coupling size for all combinations, but the appropriate magnetic coupling size can be adapted to a hydraulic size, with corresponding advantages in terms of energy efficiency, eddy current losses and/or procurement costs. Another advantage of the invention is the reduced number of components to be stocked for a pump series.
  • the contact surface has a region which is set back in the axial direction and into which a centering ring formed on the mounting flange engages.
  • a sealing ring can be arranged in the recessed area and, on the other hand, the adapter element can be precisely aligned and fastened to the housing cover in a fluid-tight manner.
  • the adapter element has several threaded holes for fastening the containment shell on the side opposite the mounting flange, it is possible to use or exchange different containment shells of different pressure levels or strengths and/or different materials within one magnetic coupling size.
  • a ring which extends further into the interior in the axial direction and which forms a start-up safeguard and prevents the outer rotor from touching the containment shell.
  • the outer contour of the adapter element has an essentially conical shape.
  • the adapter element preferably tapers essentially starting from the mounting flange up to the ring.
  • the end of the outer rotor pointing in the direction of the housing cover has a radially circumferential projection.
  • the projection is formed on the inside of the ring.
  • the end of the outer rotor pointing in the direction of the housing cover has a region with a reduced outer diameter. This ensures that the adapter element can be assembled with small coupling diameters.
  • a bearing arrangement which is in operative connection with the impeller shaft which can be driven in rotation about the axis of rotation is arranged between the impeller and the inner rotor.
  • a spring device is arranged between the inner rotor and the bearing arrangement.
  • the spring device in one embodiment between the spring device and the inner rotor there is a spacer sleeve pushed onto the impeller shaft, by means of which the inner rotor gets deeper into the outer rotor in the axial direction.
  • the magnets of the inner rotor and the magnets of the outer rotor are thus optimally aligned with one another in order to ensure optimum power transmission from the outer rotor to the inner rotor.
  • the object of the invention is also achieved by a modular kit for producing a pump arrangement according to the invention.
  • the 1 shows a pump arrangement 1 in the form of a magnetic coupling pump arrangement.
  • the pump arrangement 1 has a multi-part pump housing 2 of a centrifugal pump, which includes a hydraulic housing 3 designed as a volute housing, a housing cover 4 , a bearing bracket lantern 5 , a bearing bracket 6 and a bearing cover 7 .
  • the hydraulic housing 3 has an inlet opening 8 for sucking in a pumped medium and an outlet opening 9 for ejecting the pumped medium.
  • the housing cover 4 is arranged on the side of the hydraulic housing 3 opposite the inlet opening 8 .
  • the bearing bracket lantern 5 is attached to the side of the housing cover 4 facing away from the hydraulic housing 3 .
  • the bearing carrier 6 is attached to the side of the bearing carrier lantern 5 opposite the housing cover 4 .
  • the bearing cap 7 is in turn fastened to the side of the bearing carrier 6 facing away from the bearing carrier lantern 5 .
  • a containment shell 10 is attached to the side of the housing cover 4 facing away from the hydraulic housing 3 and extends at least partially through an interior space 11 delimited by the pump housing 2, in particular by the housing cover 4, by the bearing bracket lantern 5 and by the bearing bracket 6.
  • the containment shell 10 has an im Substantially cylindrical body 12 on.
  • the base body 12 is open on one side and closed on the side opposite the open side by means of a curved bottom 13 .
  • a ring-like fastening flange 14 which is formed in one piece with the base body 12 or is connected thereto by welding or by means of other suitable fastening means or devices, for example screws, rivets or the like.
  • the mounting flange 14 rests on the side close to the interior 11 against a contact surface 15 of the housing cover 4 and has a plurality of mounting holes 16 through which screws 17 can be passed and screwed into threaded holes 18 provided in the housing cover 4 .
  • the containment shell 10 hermetically seals a chamber 19 enclosed by it and the housing cover 4 from the interior 11 .
  • An impeller shaft 20 rotatable about an axis of rotation A extends from a flow chamber 21 delimited by the hydraulic housing 3 and the housing cover 4 through an opening 22 provided in the housing cover 4 into the chamber 19
  • Impeller 23 attached, at the opposite end of the shaft, which has two shaft sections 20a, 20b, each with increasing diameters, an inner rotor 24 arranged within the chamber 19 is provided.
  • the inner rotor 24 is fitted with a plurality of magnets 25 which are arranged on the side of the inner rotor 24 which faces the can 10 .
  • a bearing arrangement 26 Arranged between the impeller 23 and the inner rotor 24 is a bearing arrangement 26 which is operatively connected to the impeller shaft 20 which can be driven so as to rotate about the axis of rotation A.
  • a bearing ring carrier 27 arranged coaxially to the axis of rotation A, with which the stationary parts of the bearing arrangement 26, i.e. those parts that do not rotate with the impeller shaft 20, are held in place, has a flange-like area 28 on another contact surface 29 of the housing cover 4 attached to the housing cover 4 by means of a screw connection (not shown) and extends into the chamber 19.
  • a spring device 30 in the form of a plate spring assembly is arranged between the inner rotor 24 or the shaft section 20a and the bearing arrangement 26, in particular the parts of the bearing arrangement 26 rotating with the impeller shaft 20, and acts on the clamping assembly, consisting of impeller 23, one impeller 23 impeller nut 32 fastened to the impeller shaft 20 via a disc 31, the parts of the bearing arrangement 26 rotating with the impeller shaft 20 and the inner rotor 24 with a spring force such that the clamping connection, in particular via the inner rotor 24, is held to a certain extent elastically in contact with a contact surface 33, which arises from the different diameters of the shaft sections 20a and 20b, the diameter of the shaft section 20b being larger than the diameter of the shaft section 20a.
  • the clamping assembly thus essentially comprises the components rotating about the axis of rotation A with the impeller shaft 20 .
  • a drive motor not shown, preferably an electric motor, drives a drive shaft 34 .
  • the drive shaft 34 which can be driven about the axis of rotation A, is arranged essentially coaxially with the impeller shaft 20 .
  • the drive shaft 34 extends through the bearing cover 7, the bearing bracket 6 and at least partially into the bearing bracket lantern 5.
  • the drive shaft 34 is mounted in two ball bearings 35, 36 accommodated in the bearing bracket 6.
  • the magnets 37 are arranged on the side of the outer rotor 38 facing the can 10 .
  • the outer rotor 38 extends at least partially over the containment shell 10 and interacts with the inner rotor 24 in such a way that the rotating outer rotor 38 also causes the inner rotor 24 and thus the impeller shaft 20 and the impeller 23 to rotate by means of magnetic forces.
  • the 2 shows a pump assembly 1, whose external dimensions in the 1 correspond to the external dimensions shown.
  • the hydraulic housing 3, the housing cover 4, the bearing bracket lantern 5, the bearing bracket 6 and the bearing cap 7 have the same dimensions.
  • impeller 23, bearing arrangement 26 and bearing ring carrier 27 have the same dimensions in both embodiments.
  • the inner rotor 24 and the outer rotor 38 are smaller than in the case of FIG 1 embodiment shown. This is particularly advantageous when the pump arrangement 1 has lower performance requirements, for example a lower delivery height or delivery quantity, with the highest possible efficiency.
  • a separate adapter element 39 is provided for adapting the containment shell 10 with a reduced axial extension and a reduced diameter, on one side has a mounting flange 40, the configuration of which is substantially the same as that in the 1 shown mounting flange 14 of the containment shell 10 corresponds.
  • the mounting flange 40 rests against the contact surface 15 of the housing cover 4 on the side close to the interior 11 and has a plurality of mounting holes 41 through which the screws 17 can be passed and screwed into the threaded holes 18 provided in the housing cover 4 .
  • the contact surface 15 has a region 42 set back in the axial direction, in which a sealing ring 43 is arranged and in which a centering ring 44 formed on the mounting flange 40 engages, as a result of which the adapter element 39 can be precisely aligned and fastened to the housing cover 4 in a fluid-tight manner.
  • the adapter element 39 On the side opposite the mounting flange 40, the adapter element 39 has a plurality of threaded holes 45 into which screws 46 extending through the mounting holes 16 in the mounting flange 14 of the containment shell 10 can be screwed. This makes it possible to exchange different containment shells 10 of different pressure stages or strengths and/or different materials within one magnetic coupling size.
  • a ring 47 which extends further into the interior 11 in the axial direction and which forms a safety device and prevents the magnets 37 of the outer rotor 38 from touching the base body 12 of the containment shell 10 .
  • the outer contour of the adapter element 39 each have an essentially conical shape.
  • the adapter element 39 tapers down to the ring 47.
  • the inner contour of the adapter element 39 is at least partially tapered.
  • the end of the outer rotor 38 pointing in the direction of the housing cover 4 has a radially circumferential projection 48 facing the ring 47, which in any case first touches the inside of the ring 47 of the adapter element 39 if the outer rotor 38 is possibly rotating with an imbalance before the Magnets 37 of the outer rotor 38 come into contact with the base body 12 of the containment shell 10 .
  • the projection 48 can also be formed on the inside of the ring 47 .
  • the projection 48 can be formed both at the end of the outer rotor 38 and on the inside of the ring 47.
  • the impeller shaft 20 is by the length of the spacer sleeve 49 compared to that in FIG 1 embodiment shown extended.
  • the inner rotor 24 moves deeper into the outer rotor 38 in the axial direction by means of the spacer sleeve 49.
  • the magnets 25 of the inner rotor 24 and the magnets 37 of the outer rotor 38 are thus optimally aligned with one another in order to ensure optimal power transmission from the outer rotor 38 to the inner rotor 24.
  • the 3 shows a pump assembly 1, whose external dimensions in the 1 and 2 correspond to the external dimensions shown.
  • impeller 23, bearing assembly 26 and bearing ring carrier 27 have the same dimensions as in the 1 and 2 embodiments shown on.
  • the embodiment shown are both the diameter and the axial extent of containment shell 10, inner rotor 24 and outer rotor 38 compared to that in FIG 2 embodiment shown has been further reduced.
  • the impeller shaft 20, in particular shaft section 20a, has the same axial extent as in the case of FIG 2 embodiment shown.
  • the end of the outer rotor 38 pointing in the direction of the housing cover 4 has an area 50 facing the ring 47 with a reduced outer diameter, with which an outer rotor 38 possibly rotating with an imbalance first comes into contact with the inside of the ring 47 of the adapter element 39 , before the magnets 37 of the outer rotor 38 come into contact with the base body 12 of the can 10.
  • the adapter element 39 can also be used on a housing cover 4 designed as a heat barrier in a pump arrangement 1 carrying a hot medium.
  • the hydraulic housing 3, major areas of the housing cover 4, bearing bracket lantern 5, bearing bracket 6 and bearing cap 7 have the same dimensions as in the Figures 1 to 3 shown embodiments on.
  • the containment shell 10, the adapter element 39 and the outer rotor 38 have the same dimensions according to the size of the magnetic coupling 2 on.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP14726122.6A 2013-05-24 2014-05-19 Pumpenanordnung Active EP3004649B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013008795.3A DE102013008795B3 (de) 2013-05-24 2013-05-24 Pumpenanordnung
PCT/EP2014/060197 WO2014187761A1 (de) 2013-05-24 2014-05-19 Pumpenanordnung

Publications (2)

Publication Number Publication Date
EP3004649A1 EP3004649A1 (de) 2016-04-13
EP3004649B1 true EP3004649B1 (de) 2022-05-11

Family

ID=50792436

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14726122.6A Active EP3004649B1 (de) 2013-05-24 2014-05-19 Pumpenanordnung

Country Status (12)

Country Link
US (1) US10385860B2 (ko)
EP (1) EP3004649B1 (ko)
JP (1) JP6491196B2 (ko)
KR (1) KR102125989B1 (ko)
AU (1) AU2014270523C1 (ko)
BR (1) BR112015029322B1 (ko)
DE (1) DE102013008795B3 (ko)
ES (1) ES2922414T3 (ko)
RU (1) RU2670369C2 (ko)
SG (1) SG11201509124PA (ko)
WO (1) WO2014187761A1 (ko)
ZA (1) ZA201508250B (ko)

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DE102013008795B3 (de) * 2013-05-24 2014-08-21 Ksb Aktiengesellschaft Pumpenanordnung
DE102015004534A1 (de) * 2015-04-02 2016-10-06 Bernd Friedrich Modulare Universalpumpe
DE102016105309A1 (de) * 2016-03-22 2017-09-28 Klaus Union Gmbh & Co. Kg Magnetkupplungspumpe
KR101819125B1 (ko) 2016-10-26 2018-01-17 주식회사대진브로아 조립이 용이한 원심팬
US10240600B2 (en) * 2017-04-26 2019-03-26 Wilden Pump And Engineering Llc Magnetically engaged pump
DE102019002392A1 (de) 2019-04-02 2020-10-08 KSB SE & Co. KGaA Wärmesperre
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AU2014270523B2 (en) 2017-04-20
JP2016519252A (ja) 2016-06-30
BR112015029322B1 (pt) 2022-03-08
KR102125989B1 (ko) 2020-07-08
RU2670369C2 (ru) 2018-10-22
SG11201509124PA (en) 2015-12-30
ZA201508250B (en) 2017-01-25
US20160108923A1 (en) 2016-04-21
KR20160012136A (ko) 2016-02-02
RU2015148040A (ru) 2017-06-28
AU2014270523C1 (en) 2017-07-20
WO2014187761A1 (de) 2014-11-27
AU2014270523A1 (en) 2015-11-26
DE102013008795B3 (de) 2014-08-21
EP3004649A1 (de) 2016-04-13
CN105431637A (zh) 2016-03-23
ES2922414T3 (es) 2022-09-14
BR112015029322A2 (pt) 2017-07-25
JP6491196B2 (ja) 2019-03-27
US10385860B2 (en) 2019-08-20

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