EP3179110B1 - Pompe double corps - Google Patents

Pompe double corps Download PDF

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Publication number
EP3179110B1
EP3179110B1 EP16002405.5A EP16002405A EP3179110B1 EP 3179110 B1 EP3179110 B1 EP 3179110B1 EP 16002405 A EP16002405 A EP 16002405A EP 3179110 B1 EP3179110 B1 EP 3179110B1
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EP
European Patent Office
Prior art keywords
extension
flap
double pump
pump according
vane
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
EP16002405.5A
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German (de)
English (en)
Other versions
EP3179110A1 (fr
Inventor
Maksims Kirpo
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.)
Wilo SE
Original Assignee
Wilo SE
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Publication date
Application filed by Wilo SE filed Critical Wilo SE
Publication of EP3179110A1 publication Critical patent/EP3179110A1/fr
Application granted granted Critical
Publication of EP3179110B1 publication Critical patent/EP3179110B1/fr
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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
    • F04D13/00—Pumping installations or systems
    • F04D13/12—Combinations of two or more pumps
    • F04D13/14—Combinations of two or more pumps the pumps being all of centrifugal type
    • 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
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • F04D15/0016—Control, e.g. regulation, of pumps, pumping installations or systems by using valves mixing-reversing- or deviation valves

Definitions

  • the invention relates to a double pump with two fluid-conveying pumps whose pressure channels open into an outlet port, wherein a pivotable about an axis non-return valve is disposed in the discharge point, which closes the pressure channel of the other pump through its damper blade when conveyed through the pressure channel of one of the two pump ,
  • the object of the invention is to improve a double pump of the type mentioned above so that when switching from a pump to the second pressure surges do not arise or are significantly weaker and beyond the flap has a stable position during the promotion.
  • the non-return valve has an extension which is claimed or loaded to decelerate their movement by damping means.
  • Such an extension of the check valve is used to slow down the movement of the check valve and thus safely prevent pressure surges and pressure surges.
  • the respective end position of the flap is securely stabilized.
  • the damping agent is the pumped liquid, a pressure-resistant (damping) or compliant plastic plus rubber elements / elastomers or a liquid that is higher viscous (viscous and viscous) than water.
  • the extension has the shape of a flat wing.
  • the extension to the axis may be arranged diametrically opposite to the non-return valve. It is also proposed for this purpose that flap wing and extension form a two-leaf non-return valve.
  • extension extends into a space filled by the pumped liquid.
  • the extension may also extend into a space separate from the delivery fluid, which contains a resilient means, a pressure-absorbing plastic, a liquid which is more viscous than water or a viscous agent.
  • connection between the flap wing and the extension is rigid or limited yielding.
  • the construction may also be designed such that the extension with the flap wing forms an angle of 180 degrees or an obtuse angle between 90 degrees and 180 degrees.
  • the double pump according to the invention (twin pump) has two identical centrifugal pumps in the same housing, the pressure channels 1, 2 open into an outlet point 3, from which an outlet nozzle 4 goes off.
  • the discharge point 3 has a double check valve with a flow-controlled non-return valve 5, the second pressure channel 2 closes when flowing through the first pressure channel 1 (and thus when the first pump and stop the second pump) and flow through the second pressure channel 2 (activity of second pump and standstill of the first pump) closes the first pressure channel 1.
  • the non-return valve 5 abuts with its flap 5a on a first end stop 6 formed by the double pump housing and on closure of the second pressure channel 2 on a second end stop 7 formed by the housing.
  • the striking of the end stops 6, 7 leads in undamped double pumps to considerable noise and also to pressure surges in the pumped liquid.
  • the non-return flap 5 is pivotable about an axis of rotation 8 through an angle ⁇ of approximately 30 to 90 (120) degrees.
  • the pivoting angle ⁇ is dependent on the directions of the pressure channels 1, 2 arriving at the discharge point 3.
  • the non-return flap 5 not only has the flap wing 5a, but also has an extension 5b beyond the axis of rotation 8, so that the flap flap 5a together with the extension 5b forms a two-armed lever.
  • the parts 5a and 5b are aligned in the exemplary embodiment and form doing an angle of 180 degrees. They can also form an obtuse angle between 90 and 180 degrees with each other.
  • the two parts 5a, 5b in the region of the axis of rotation 8 are rigidly connected or the connection is limited yielding by a limited yielding material.
  • the extension 5b preferably has the shape of a flat wing, the surface of which is preferably aligned with the surface of the flap 5a and thus lies in the same plane (in this case the angle is exactly 180 degrees).
  • the extension 5b is pivotable within a space 9, which is filled in one embodiment of the pumped medium.
  • a space 9 which is filled in one embodiment of the pumped medium.
  • the conveyed medium located in the space 9 thus forms a damping means for the movements of the extension 5 b and thus for the non-return flap 5.
  • the space 9 is separated from the delivery liquid.
  • this closed space 9 is a medium that is thicker than water (especially as heating water), z.
  • damping means in the form of pressure-absorbing means such as pressure-absorbing plastic or pressure-absorbing resilient means, are arranged on both sides of the extension 5b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Claims (10)

  1. Pompe double corps avec deux pompes transportant du liquide, dont les canaux de refoulement (1, 2) débouchent dans un tuyau de sortie (4), dans laquelle un clapet antiretour (5) pivotant autour d'un axe (8) est disposé à l'endroit de l'embouchure (3) et, lors du transport par le canal de refoulement (1, 2) d'une des deux pompes, ferme le canal de refoulement de l'autre pompe au moyen de son aile de clapet (5a), caractérisée en ce que le clapet antiretour (5) présente, sur le côté opposé à l'aile de clapet (5a) par rapport à l'axe (8), un prolongement (5b) qui est sollicité ou chargé par des moyens d'amortissement afin de freiner son mouvement.
  2. Pompe double corps selon la revendication 1, caractérisée en ce que le moyen d'amortissement est le liquide transporté, un moyen à ressort, une matière plastique absorbant la pression, un liquide qui est plus visqueux que l'eau ou qui est un milieu visqueux.
  3. Pompe double corps selon la revendication 1 ou 2, caractérisée en ce que le prolongement (5b) présente la forme d'une aile plate.
  4. Pompe double corps selon l'une quelconque des revendications précédentes, caractérisée en ce que le prolongement (5b) est disposé de façon diamétralement opposée au clapet antiretour (5) par rapport à l'axe (8).
  5. Pompe double corps selon l'une quelconque des revendications précédentes, caractérisée en ce que l'aile de clapet (5a) et le prolongement (5b) forment un clapet antiretour à deux ailes (5).
  6. Pompe double corps selon l'une quelconque des revendications précédentes, caractérisée en ce que le prolongement (5b) pénètre dans un espace (9) rempli du liquide transporté.
  7. Pompe double corps selon l'une quelconque des revendications 1 à 5, caractérisée en ce que le prolongement (5b) pénètre dans un espace (9) séparé du liquide transporté, qui contient un moyen de ressort, une matière plastique absorbant la pression, un liquide, qui est plus visqueux que l'eau ou qui est un milieu visqueux.
  8. Pompe double corps selon l'une quelconque des revendications précédentes, caractérisée en ce que la liaison entre l'aile de clapet (5a) et le prolongement (5b) est rigide en flexion ou présente une souplesse limitée.
  9. Pompe double corps selon l'une quelconque des revendications précédentes, caractérisée en ce que le prolongement (5b) forme avec l'aile de clapet (5a) un angle de 180 degrés ou un angle obtus entre 90 degrés et 180 degrés.
  10. Utilisation de la pompe double corps selon l'une quelconque des revendications précédentes comme pompe de recirculation de chauffage.
EP16002405.5A 2015-12-10 2016-11-14 Pompe double corps Active EP3179110B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015016086.9A DE102015016086A1 (de) 2015-12-10 2015-12-10 Doppelpumpe

Publications (2)

Publication Number Publication Date
EP3179110A1 EP3179110A1 (fr) 2017-06-14
EP3179110B1 true EP3179110B1 (fr) 2018-04-04

Family

ID=57326146

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16002405.5A Active EP3179110B1 (fr) 2015-12-10 2016-11-14 Pompe double corps

Country Status (2)

Country Link
EP (1) EP3179110B1 (fr)
DE (1) DE102015016086A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU102816B1 (de) * 2021-06-01 2022-12-01 Wilo Se Doppelpumpenaggregat

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE586304C (de) * 1932-01-26 1933-10-19 Max Seibt Rueckschlagklappe fuer Rohrleitungen, insbesondere als Anlaufvorrichtung fuer Kreiselpumpen
FR2075830A5 (fr) * 1970-01-21 1971-10-08 Radighieri Rino
DE2908165C2 (de) * 1979-03-02 1980-08-07 Klein, Schanzlin & Becker Ag, 6710 Frankenthal Umschaltklappe für ein Doppelpumpenaggregat
EP2161455B1 (fr) * 2008-09-04 2018-05-30 Grundfos Management A/S Pompe double
DE102014006258A1 (de) 2014-04-30 2015-11-05 Wilo Se Verfahren zur Regelung eines Pumpensystems und geregeltes Pumpensystem

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
DE102015016086A1 (de) 2017-06-29
EP3179110A1 (fr) 2017-06-14

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