EP4102078A2 - Partie de fusion de décharge, boîtier de pompe et appareil de pompe - Google Patents

Partie de fusion de décharge, boîtier de pompe et appareil de pompe Download PDF

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Publication number
EP4102078A2
EP4102078A2 EP22177041.5A EP22177041A EP4102078A2 EP 4102078 A2 EP4102078 A2 EP 4102078A2 EP 22177041 A EP22177041 A EP 22177041A EP 4102078 A2 EP4102078 A2 EP 4102078A2
Authority
EP
European Patent Office
Prior art keywords
opening
liquid
end part
discharge
valve
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.)
Pending
Application number
EP22177041.5A
Other languages
German (de)
English (en)
Other versions
EP4102078A3 (fr
Inventor
Soichiro Ogawa
Hiroyuki Kaneko
Yoichi Nakamura
Seigo Kyo
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.)
Ebara Corp
Original Assignee
Ebara Corp
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 Ebara Corp filed Critical Ebara Corp
Publication of EP4102078A2 publication Critical patent/EP4102078A2/fr
Publication of EP4102078A3 publication Critical patent/EP4102078A3/fr
Pending legal-status Critical Current

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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
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/029—Stopping of pumps, or operating valves, on occurrence of unwanted conditions for pumps operating in parallel
    • 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
    • F04D13/06—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
    • 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
    • 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
    • F04D15/0027—Varying behaviour or the very pump
    • F04D15/005—Varying behaviour or the very pump the pumps being of the circumferential flow 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
    • 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

Definitions

  • a reference value is determined for performance difference between the two pumps configuring the twin pump. Further, positional relationship between the suction port and the discharge port, a distance between the suction port and the discharge port, and the like are preferably set to the same as those of the single pump in terms of installation and operation of the pump.
  • PTL 1 discloses a technique in which a passage is appropriately designed to suppress performance difference between two pumps different in shapes.
  • rotary shafts of the two pumps are arranged such that the rotary shafts of the two pumps are symmetrical about a line connecting a center of a suction port and a center of a discharge port. Therefore, it is considered that efficiency of the pumps is sacrificed.
  • an on-off valve of a discharge merging portion substantially has a flat surface shape. Therefore, it is considered that the efficiency of the pumps is sacrificed.
  • an on-off valve of a discharge merging portion substantially has a flat surface shape, and it is considered that efficiency of pumps is sacrificed.
  • the blank flange is attached by using screw holes 62 (see Fig. 3) circumferentially arranged for attachment of the casing cover 122.
  • the blank flange has a disk shape, and includes, on an outer edge of the blank flange, attachment holes circumferentially arranged at positions corresponding to the screw holes 62.
  • Figs. 3 to 5 each illustrate a configuration of the single pump casing 18.
  • Fig. 3 is a top view of the pump casing 18.
  • Fig. 4 is a perspective view of the pump casing 18.
  • Fig. 5 is a bottom view of the pump casing 18.
  • Figs. 3 to 5 each illustrate the pump casing 18 in a state where the components other than the pump casing 18, namely, the first electric motor 101, the first rotary shaft 121, the first impeller 51, the second electric motor, the second rotary shaft, the second impeller 52, and the like are detached from the pump apparatus 16.
  • the suction port 20 is provided in a suction flange 34.
  • the suction flange 34 is to connect the pump casing 18 to a pipe.
  • the discharge port 22 is provided in a discharge flange 36.
  • the discharge flange 36 is to connect the pump casing 18 to a pipe.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP22177041.5A 2021-06-07 2022-06-02 Partie de fusion de décharge, boîtier de pompe et appareil de pompe Pending EP4102078A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2021095052A JP2022187178A (ja) 2021-06-07 2021-06-07 吐出合流部、ポンプケーシング、およびポンプ装置

Publications (2)

Publication Number Publication Date
EP4102078A2 true EP4102078A2 (fr) 2022-12-14
EP4102078A3 EP4102078A3 (fr) 2023-03-08

Family

ID=81878124

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22177041.5A Pending EP4102078A3 (fr) 2021-06-07 2022-06-02 Partie de fusion de décharge, boîtier de pompe et appareil de pompe

Country Status (2)

Country Link
EP (1) EP4102078A3 (fr)
JP (1) JP2022187178A (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3142638A1 (de) 1981-10-28 1983-05-05 Klein, Schanzlin & Becker Ag, 6710 Frankenthal Umschalteinrichtung fuer ein pumpenaggregat
EP2161455A1 (fr) 2008-09-04 2010-03-10 Grundfos Management A/S Pompe double

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2376309A1 (fr) * 1977-01-04 1978-07-28 Materiel Telephonique Dispositif pour regler le passage et le debit d'un flux hydraulique, son procede de montage dans une pompe de circulation de type jumele
DE102014005212A1 (de) * 2014-04-09 2015-10-15 Man Truck & Bus Ag Abgaskrümmer für eine Brennkraftmaschine, insbesondere in Kraftfahrzeugen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3142638A1 (de) 1981-10-28 1983-05-05 Klein, Schanzlin & Becker Ag, 6710 Frankenthal Umschalteinrichtung fuer ein pumpenaggregat
EP2161455A1 (fr) 2008-09-04 2010-03-10 Grundfos Management A/S Pompe double

Also Published As

Publication number Publication date
EP4102078A3 (fr) 2023-03-08
JP2022187178A (ja) 2022-12-19

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