EP2626567A1 - Boîtier de pompe - Google Patents

Boîtier de pompe Download PDF

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Publication number
EP2626567A1
EP2626567A1 EP12154493.6A EP12154493A EP2626567A1 EP 2626567 A1 EP2626567 A1 EP 2626567A1 EP 12154493 A EP12154493 A EP 12154493A EP 2626567 A1 EP2626567 A1 EP 2626567A1
Authority
EP
European Patent Office
Prior art keywords
pump housing
channel
sensor
bore
receptacle
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.)
Granted
Application number
EP12154493.6A
Other languages
German (de)
English (en)
Other versions
EP2626567B1 (fr
EP2626567B2 (fr
Inventor
Casper Pedersen
Nicholas Pedersen
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.)
Grundfos Holdings AS
Original Assignee
Grundfos Holdings AS
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=47559527&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2626567(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Grundfos Holdings AS filed Critical Grundfos Holdings AS
Priority to EP12154493.6A priority Critical patent/EP2626567B2/fr
Priority to US14/377,282 priority patent/US9863436B2/en
Priority to PCT/EP2013/050861 priority patent/WO2013117402A1/fr
Priority to CN201380008576.6A priority patent/CN104114873B/zh
Publication of EP2626567A1 publication Critical patent/EP2626567A1/fr
Publication of EP2626567B1 publication Critical patent/EP2626567B1/fr
Application granted granted Critical
Publication of EP2626567B2 publication Critical patent/EP2626567B2/fr
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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F04D29/428—Discharge tongues
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal 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
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0088—Testing machines
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps

Definitions

  • the invention relates to a pump housing or a centrifugal pump with a pump housing with the features specified in the preamble of claim 1.
  • Pump housing of the spiral housing type in question here are widely used in the art.
  • Such pump housings are used for example for heating circulation pumps, which are nowadays often equipped with electronic speed controllers, which open a wide range of applications.
  • a differential pressure measurement is regularly required for integration into a control, which at least detects the pressure difference between the suction side and the pressure side of the pump.
  • a disadvantage of this known arrangement is that the channels are molded in the pump housing, which is typically made of cast iron must be, which is technically complex and requires in particular the use of lost cores, which means considerable costs, especially in mass production.
  • the present invention seeks to provide a generic pump housing with a receptacle for a differential pressure sensor so that this manufacturing technology is cheaper to manufacture.
  • the pressure measurement should be done on the pressure side as far as possible at a point in the one hand, the pressure of the actual output side of the pump prevailing line pressure largely corresponds, but on the other hand allows the most unambiguous quantity assignment in the QH diagram.
  • the pump housing according to the invention is a housing of the spiral housing type and has a suction channel, which opens into a space which is arranged to dispose a rotatable about a rotational axis impeller and which has a spirally encircling and open to this space channel, namely surrounding the impeller Spiral channel, which opens into a pressure channel.
  • the pump housing has a receptacle for a differential pressure sensor and is provided with a first sensor channel which connects the receptacle with the suction-side interior of the pump housing, and with a second sensor channel which connects the receptacle with the pressure-side interior of the pump housing.
  • the receptacle for the differential pressure sensor is arranged in the region between the spirally encircling channel and the suction channel.
  • Such an arrangement is particularly advantageous since both in casting technology Forming as well as machined channels can be formed rectilinear channels, which are relatively easy to manufacture manufacturing technology.
  • the arrangement according to the invention allows a pressure-side pressure measurement in a region which is particularly advantageous, as will be explained in more detail below.
  • the basic idea of the solution according to the invention is to provide a receptacle for a differential pressure sensor in the pump housing, which is arranged such that it can be guided with rectilinear channels into the interior of the pump housing, namely to the suction side on the one hand and to the pressure side on the other hand.
  • the receptacle may be located either within the pump housing or outside the pump housing, be it only as a mounting base or even with outside of the pump housing opening channels.
  • the receptacle according to the invention is particularly advantageously located inside the pump housing, as will be explained in more detail below.
  • the sensor channels are formed by bores in the housing.
  • Such holes can be made inexpensively, especially since such typically consisting of cast pump housing must be reworked usually span anyway.
  • the receptacle is formed by a bore in the housing.
  • the second sensor channel can advantageously lead through a transverse to the bore forming the receptacle, whereas the first sensor channel according to an advantageous embodiment of the invention in continuation of the recording forming hole is arranged, preferably in alignment with it, so is formed with the receptacle as a stepped bore.
  • the first sensor channel so the sensor channel which connects the suction side within the pump housing with the receptacle, is arranged substantially perpendicular to the axis of rotation of the impeller.
  • the second sensor channel which connects the receptacle with the pressure side within the pump housing, arranged substantially parallel to the axis of rotation of the impeller.
  • the second sensor channel opens in the pressure-side peripheral region of the centrifugal wheel, specifically there near the end of the spirally encircling channel which opens into the pressure channel. It has surprisingly been found that especially in this area the pressure-side pressure detection is particularly advantageous, since on the one hand a clear assignment to the flow rate is usually possible and on the other hand, the pressure measured there comes very close to the pressure actually prevailing at the outlet of the pump static pressure.
  • the second sensor channel forming bore is made through a preferably central housing opening, with which the pump housing connects to a motor housing and through which the impeller is inserted into the pump housing.
  • This already existing opening which is usually also machined, allows a parallel to the axis of rotation of the impeller arranged bore, which transverse to the recording forming Hole can open. It can thus be created a hole in which no end must be closed, as would have to be done, for example, if this hole would be introduced from the outside through the housing.
  • the bore forming the second sensor channel is guided by a wall covering the rotor wheel towards the housing opening. It is in this case opening to the above, through which the impeller is inserted into the pump housing.
  • the bore forming the second sensor channel can advantageously also be drilled from the outside into the pump housing.
  • the receptacle is formed by a bore in the pump housing, it is advantageous if at the outer end of this bore a transverse plane extending transversely to the bore axis is provided, which can serve as a contact surface for a sensor housing. Parallel to the bore axis, a threaded bore can be provided in this plane surface, in order to fasten a sensor housing to the plane surface with a screw.
  • the fastening could be provided via a second threaded bore, so that a sensor housing can be fastened on both sides of the bore on the plane surface.
  • the other end by means of a screw in the threaded bore can be fastened.
  • a second threaded hole can be saved by the headband, on the one hand supported in the groove and on the other hand held by the screw positive and non-positively on the flat surface is, the integrated underneath sensor housing is securely held positively and positively.
  • the differential pressure sensor itself is advantageously used by incorporating a sealing hat into the bore forming the receptacle so that it does not come into direct contact with the liquid via the sensor bores, but only indirectly. At the same time, the sealing hat ensures that no liquid can get into the bore forming the receptacle.
  • the differential pressure sensor is arranged in a projecting cylindrical portion of the sensor housing, which sits on the flat surface and protrudes with the projecting cylindrical portion in the receiving bore forming. This sensor housing is advantageously secured by means of the retaining clip on the flat surface on the housing.
  • centrifugal pump assembly consists of a centrifugal pump 1 with an electric motor 2 connected thereto, which drives via a shaft 3 in the pump housing 4 rotatably mounted about a rotation axis 5 gyro 6.
  • the electric motor 2 is shown for clarity purposes without terminal box and the engine electronics therein including the electronic speed controller.
  • the electric motor 2 has a motor housing 7, which is provided to the pump 1 at the periphery with a flange 8 and engages via a centering projection in a central housing opening 9 of the pump housing 4, which in this area circumferentially the opening 9 also provided with a flange 10 is.
  • Motor housing 7 and pump housing 4 are connected via the flanges 8, 10, which are encompassed by a clamping ring 11, positively and non-positively connected.
  • the pump housing 4 is an inline housing, ie suction port 12 and pressure port 13 are aligned.
  • the pump housing 4 is formed as a spiral housing and has an outgoing from the suction port 12 suction channel 14, which opens into a space 15 in which the impeller 6 is arranged, as shown in FIG Fig. 2 is shown.
  • This space 15 for the impeller is surrounded by a spirally widening and circumferential, open to the space 15 spiral channel 16 which opens into a pressure channel 17, which ends at the suction port 12.
  • the housing structure thus corresponds to the basic housing structure of an inline pump of the spiral housing type.
  • a receptacle 20 For receiving a differential pressure sensor, which is arranged in a projecting portion 18 of a sensor housing 19, a receptacle 20 is provided in the form of a bore within the pump housing 4.
  • the bore 20 is provided for receiving this projecting portion 18 incorporating a sealing cap 21.
  • the section 18 of the sensor housing 19 is designed such that pressure forces can be detected via the end-side end face on the one hand and a side face on the other hand through the sealing and elastic hat 21.
  • the receptacle 20 is formed as a stepped bore, d. H. at the end of the receptacle 20, the bore continues with a smaller diameter and forms there a first sensor channel 22, which opens into the suction channel 14.
  • This first sensor channel 22 thus connects the suction channel 14 with the receptacle 20 for the differential pressure sensor.
  • the receptacle forming bore 20 and the adjoining first sensor channel 22 lie in a plane transverse to the axis of rotation 5 of the impeller 6. In the present embodiment, the longitudinal center axis of the first sensor channel 22 and the axis of rotation 5 intersect.
  • a second sensor channel 23, which connects the receptacle 20 for the differential pressure sensor with the pressure-side interior of the pump housing, in particular the space 15, is formed by a bore which is arranged parallel to the axis of rotation 5 of the impeller 6. This bore is introduced through the central housing opening 9 and opens into the space 15, in particular the Fig. 2 it can be seen in addition to the impeller 6 within the area surrounded by the spiral channel 16 space 15, and with respect to the axis of rotation 5 and the flow direction about 45 ° before the point at which the spiral channel 16 opens into the pressure channel 17.
  • the receptacle 20 for the differential pressure sensor is arranged between the spirally encircling channel 16 and the suction channel 14, so that the required line connections within the pump housing 4 can be created by simple bores, namely the first sensor channel 22 and the second sensor channel 23 , It has surprisingly been found that the mouth of the second sensor channel 23 between the impeller 6 and the spiral channel 16 is metrologically particularly advantageous, as measured in this area the pressure values approached quite close to the static pressure at the pressure port 13, on the other hand, however, a unique Assignment to the flow rate values is possible.
  • the receptacle 20 is arranged for the differential pressure sensor within the pump housing 4, but this can also be outside of the pump housing.
  • the term "between spirally encircling channel 16 and the suction channel 14" is therefore to be understood broadly and includes an area which makes it possible to reach the suction-side and pressure-side space of the pump housing 4 from a location in or on the pump housing 4 with straight bores.
  • a perpendicular thereto provided planar surface 24 provided on the outside of the pump housing, in which a arranged adjacent to the receptacle 20 threaded bore 25 is provided. Furthermore, one is Plane surface 26 arranged perpendicular to the plane surface 24 is provided on the outside of the pump housing 4 at the level of the spiral channel 16, in which a groove 27 is milled.
  • the flat surfaces 24 and 26 serve to abut the sensor housing 19, which is fastened by means of a holding bracket 28 on the pump housing 4, which is supported with one end in the groove 27 and is fastened at its other end by means of a screw 29 on the pump housing, in the Threaded hole 25 engages.
  • the mouth of the sensor channel 23 is arranged at an angle a of 90 °.
  • the angle a is determined by the longitudinal central axis 30 of the pump housing and the axis of rotation 5 of the gyro wheel 6 and in representation according to FIG. 8 , ie turning in the direction of the axis of rotation 5 to the left motor.
  • the invention is not limited to this angle a equal to 90 °, but can be arranged clockwise in angular ranges a between 0 ° and 120 ° anti-clockwise and in angular ranges ⁇ from 0 ° to 120 ° and this on the basis of FIG. 8 is shown.
  • the mouth is advantageously located between the spirally encircling channel 16 and the impeller, that is, a flow region influenced by the spiral channel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP12154493.6A 2012-02-08 2012-02-08 Boîtier de pompe Active EP2626567B2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP12154493.6A EP2626567B2 (fr) 2012-02-08 2012-02-08 Boîtier de pompe
US14/377,282 US9863436B2 (en) 2012-02-08 2013-01-17 Pump housing
PCT/EP2013/050861 WO2013117402A1 (fr) 2012-02-08 2013-01-17 Carter de pompe
CN201380008576.6A CN104114873B (zh) 2012-02-08 2013-01-17 泵壳体

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12154493.6A EP2626567B2 (fr) 2012-02-08 2012-02-08 Boîtier de pompe

Publications (3)

Publication Number Publication Date
EP2626567A1 true EP2626567A1 (fr) 2013-08-14
EP2626567B1 EP2626567B1 (fr) 2016-07-13
EP2626567B2 EP2626567B2 (fr) 2019-10-16

Family

ID=47559527

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12154493.6A Active EP2626567B2 (fr) 2012-02-08 2012-02-08 Boîtier de pompe

Country Status (4)

Country Link
US (1) US9863436B2 (fr)
EP (1) EP2626567B2 (fr)
CN (1) CN104114873B (fr)
WO (1) WO2013117402A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016087063A1 (fr) 2014-12-03 2016-06-09 Grundfos Holding A/S Ensemble de capteurs
WO2016087256A1 (fr) 2014-12-03 2016-06-09 Grundfos Holding A/S Dispositif de détection
EP3315783A1 (fr) * 2016-10-27 2018-05-02 Sulzer Management AG Procédé et dispositif de surveillance de l'état d'une volute de pompe centrifuge

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102231079B1 (ko) * 2014-07-08 2021-03-24 엘지전자 주식회사 배수 펌프 어셈블리 및 이를 구비하는 의류 건조기
CN104298875B (zh) * 2014-10-13 2017-10-31 浙江工业大学之江学院 一种基于功率和压差的离心泵流量预测方法
DK3184823T3 (da) * 2015-12-21 2019-07-08 Grundfos Holding As Centrifugalpumpe
EP3563062B1 (fr) * 2016-12-30 2021-07-21 Grundfos Holding A/S Ensemble capteur et procédé de détection de panne de pompes et ensemble de pompe comprenant un tel ensemble capteur
CN109707635A (zh) * 2018-12-11 2019-05-03 中国航空工业集团公司金城南京机电液压工程研究中心 一种离心泵
CN110056541A (zh) * 2019-05-30 2019-07-26 广西玉柴机器股份有限公司 一种增压器的压气机外壳
JP7350625B2 (ja) * 2019-11-05 2023-09-26 株式会社荏原製作所 ポンプケーシングおよびポンプ装置
DE102022207936A1 (de) 2022-08-01 2024-02-01 Mahle International Gmbh Wasserpumpe für ein Kühlsystem eines Kraftfahrzeugs

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0774583A1 (fr) 1995-11-14 1997-05-21 Grundfos A/S Carter pour une pompe centrifuge
DE19647967A1 (de) * 1996-11-20 1998-05-28 Wilo Gmbh Pumpe mit Druckdifferenzsensor
EP1413768A1 (fr) * 2002-10-22 2004-04-28 Wilo Ag Pompe avec capteur dans le carter de pompe
EP1413769A1 (fr) * 2002-10-22 2004-04-28 Wilo Ag Pomope avec ligne de connexion à des points de mesure

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4678405A (en) * 1984-02-14 1987-07-07 Westinghouse Electric Corp. Low net positive suction head pumps
DE29717937U1 (de) † 1997-10-09 1997-11-27 Grundfos A/S, Bjerringbro Anordnung zur Druckmessung
DE10039917A1 (de) * 2000-08-16 2002-02-28 Ksb Ag Verfahren und Vorrichtung zur Ermittlung der Fördermenge einer Kreiselpumpe
ATE434172T1 (de) † 2005-03-05 2009-07-15 Grundfos Management As Differenzdrucksensor-anordnung und zugehöriger differenzdrucksensor
EP2055926B1 (fr) * 2007-11-05 2010-11-03 Delphi Technologies Holding S.à.r.l. Pompes à fluide

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0774583A1 (fr) 1995-11-14 1997-05-21 Grundfos A/S Carter pour une pompe centrifuge
DE19647967A1 (de) * 1996-11-20 1998-05-28 Wilo Gmbh Pumpe mit Druckdifferenzsensor
EP1413768A1 (fr) * 2002-10-22 2004-04-28 Wilo Ag Pompe avec capteur dans le carter de pompe
EP1413769A1 (fr) * 2002-10-22 2004-04-28 Wilo Ag Pomope avec ligne de connexion à des points de mesure

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016087063A1 (fr) 2014-12-03 2016-06-09 Grundfos Holding A/S Ensemble de capteurs
WO2016087256A1 (fr) 2014-12-03 2016-06-09 Grundfos Holding A/S Dispositif de détection
US10184812B2 (en) 2014-12-03 2019-01-22 Grundfos Holding A/S Sensor assembly
US10288457B2 (en) 2014-12-03 2019-05-14 Grundfos Holding A/S Sensor assembly
EP3315783A1 (fr) * 2016-10-27 2018-05-02 Sulzer Management AG Procédé et dispositif de surveillance de l'état d'une volute de pompe centrifuge
US10480517B2 (en) 2016-10-27 2019-11-19 Sulzer Management Ag Method of and arrangement for monitoring the condition of a volute casing of a centrifugal pump

Also Published As

Publication number Publication date
US20150016980A1 (en) 2015-01-15
WO2013117402A1 (fr) 2013-08-15
US9863436B2 (en) 2018-01-09
CN104114873B (zh) 2016-08-17
EP2626567B1 (fr) 2016-07-13
CN104114873A (zh) 2014-10-22
EP2626567B2 (fr) 2019-10-16

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